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| logo = BTS-Logo Light Green.svg
| logo = BTS-Logo Light Green.svg
| logo_width = 80px
| logo_width = 80px
| image = Bangkok Skytrain 2011.jpg
| image = BTS Sena Nikhom - Train from KU station.jpg
| image_width = 300px
| image_width = 300px
| caption = Two BTS Skytrains heading to both directions.
| caption = '''EMU-A2''' from [[Kasetsart University BTS Station|Kasetsart University station]] arriving at [[Sena Nikhom BTS Station|Sena Nikhom station]]
| native_name =
| native_name = รถไฟฟ้าบีทีเอส สายสุขุมวิท<br>รถไฟฟ้าเฉลิมพระเกียรติ 6 รอบพระชนมพรรษา สาย 1 (สุขุมวิท)<br>รถไฟฟ้าสายสีเขียวอ่อน
| type = [[Rapid transit]]
| type = [[Rapid transit]]
| system = [[BTS Skytrain]]
| system = [[BTS Skytrain]]
| owner = [[Bangkok Metropolitan Administration]] (BMA)
| owner = [[Bangkok Metropolitan Administration]]
| operator = [[Bangkok Mass Transit System|Bangkok Mass Transit System<br />Public Company Limited]]
| operator = [[Bangkok Mass Transit System|Bangkok Mass Transit System Public Company Limited]]
| locale = [[Bangkok]], [[Samut Prakan]], and [[Pathum Thani]]
| locale = [[Bangkok]], [[Samut Prakan]], and [[Pathum Thani]]
| start = [[Khu Khot BTS station|Khu Khot]]
| start = [[File:BTS N24.svg|20px]] [[Khu Khot BTS station|Khu Khot]]
| end = [[Kheha BTS station|Kheha]]
| end = [[File:BTS E23.svg|20px]] [[Kheha BTS station|Kheha]]
| connectinglines =
| connectinglines =
| stations = 47 stations<br>
| stations = '''Total :''' 57 stations<br>47 ''<small>(operational)</small>''<br>9 ''<small>(planned)</small>''<br>1 ''<small>(provisional)</small>''
| daily_ridership = 926,294 <small>({{rint|bangkok|Sukhumvit}} and {{rint|bangkok|Silom}})</small><br><small>30 August 2024</small><ref>{{Cite web |date=2024-08-31 |title="กรมการขนส่งทางราง" เผยวันศุกร์สิ้นเดือนสิงหาคม 67 มีผู้ใช้บริการรถไฟฟ้าสายฉลองรัชธรรม (สีม่วง) และรถไฟฟ้าสายสีแดง สูงสุดตั้งแต่เปิดให้บริการมา หลังมีนโยบายอัตราค่าโดยสารรถไฟฟ้าสูงสุด 20 บาทตลอดสาย |url=https://www.drt.go.th/public-relations/%E0%B8%81%E0%B8%A3%E0%B8%A1%E0%B8%81%E0%B8%B2%E0%B8%A3%E0%B8%82%E0%B8%99%E0%B8%AA%E0%B9%88%E0%B8%87%E0%B8%97%E0%B8%B2%E0%B8%87%E0%B8%A3%E0%B8%B2%E0%B8%87-%E0%B9%80%E0%B8%9C%E0%B8%A2-7 |access-date=2024-09-04 |website=กรมการขนส่งทางราง กระทรวงคมนาคม |language=th}}</ref>
''1 provisional station''
| daily_ridership = 1,758,544 ({{rint|bangkok|Sukhumvit}} and {{rint|bangkok|Silom}})
| mapcolor = {{RouteBox| |Sukhumvit Line|#77cc00}} Light Green
| mapcolor = {{RouteBox| |Sukhumvit Line|#77cc00}} Light Green
| open = 5 December 1999
| open = {{date and age|df=y|1999|12|05}}
| close =
| lastextension = {{date and age|df=y|2020|12|16}}
| character = Fully elevated
| character = Fully elevated
| depot = Mo Chit Depot ''(shared with {{rint|bangkok|Silom}})''<br>Khu Khot Depot<br>Kheha Depot
| depot = Mo Chit Depot <small>(shared with {{rint|bangkok|Silom}})</small><br>Khu Khot Depot <small>(shared with {{rint|bangkok|Silom}})</small><br>Kheha Depot
| stock = '''[[Siemens Modular Metro]]'''<br>'''EMU-A1''': 35 four-car trains<br>'''[[Siemens]] [[Bozankaya]]'''<br>'''EMU-A2''': 22 four-car trains<br>'''[[CRRC Changchun Railway Vehicles|CNR Changchun Railway Vehicles]]'''<br>'''EMU-B1''': 12 four-car trains<br>'''[[CRRC Changchun Railway Vehicles|CNR Changchun Railway Vehicles]]'''<br>'''EMU-B2''': 5 four-car trains<br>'''[[CRRC Changchun Railway Vehicles]]'''<br>'''EMU-B3''': 24 four-car trains
| stock = [[Siemens Modular Metro]] <br>EMU-A1: 35 trains<br>
| linelength = '''Total :'''{{convert|69.07|km|abbr=on}}<br>{{convert|51.17|km|abbr=on}} <small>''(operational)''</small><br>{{convert|17.9|km|abbr=on}} <small>''(planned)''</small>
Siemens Bozankaya <br>EMU-A2: 22 trains<br>

CNR Changchun <br>EMU-B1: 12 trains<br>

CNR Changchun <br>EMU-B2: 5 trains<br>

CRRC Changchun <br>EMU-B3: 24 trains<br>
| linelength = {{convert|51.17|km|abbr=on}}
| gauge = {{track gauge|sg|allk=on}}
| gauge = {{track gauge|sg|allk=on}}
| electrification = {{750 V DC|conductor=y}}
| electrification = {{750 V DC|conductor=y}}
| speed_km/h = 80
| speed_km/h = 80
| signalling = <b>Former:</b> [[Siemens Mobility|Siemens]] Trainguard LZB700M fixed block [[Automatic train control|ATC]] under [[Automatic train operation|ATO]] GoA 2 (STO)<br><b>Current:</b> [[Bombardier Transportation|Bombardier]] CITYFLO 450 moving block [[Communications-based train control|CBTC]] [[Automatic train control|ATC]] under [[Automatic train operation|ATO]] GoA 2 (STO), with subsystems of [[Automatic train protection|ATP]], ATS and [[Computer-based interlocking|CBI]]<ref>{{Cite web|title=Mass transit signalling|url=https://rail.bombardier.com/en/solutions-and-technologies/signalling-and-infrastructure/mass-transit-signalling.html#CITYFLO_450|access-date=2020-06-16|website=Bombardier Transportation|language=en|url-status=dead|archive-url=https://web.archive.org/web/20220101063113/https://rail.bombardier.com/en/solutions-and-technologies/signalling-and-infrastructure/mass-transit-signalling.html|archive-date=2022-01-01}}</ref><ref>{{Cite web|title=Bombardier Projects in Mass-transit signalling|url=https://rail.bombardier.com/content/dam/transportation/products/mass-transit-signalling/BT_PDF_Mass-transit%20signalling.pdf|url-status=dead|archive-url=https://web.archive.org/web/20211123062807/https://rail.bombardier.com/content/dam/transportation/products/mass-transit-signalling/BT_PDF_Mass-transit%20signalling.pdf|archive-date=2021-11-23}}</ref>
| signalling = '''Former:''' [[Siemens Mobility|Siemens]] Trainguard LZB700M fixed block [[Automatic train control|ATC]] under [[Automatic train operation|ATO]] GoA 2 (STO)<br>'''Current:''' [[Bombardier Transportation|Bombardier]] CITYFLO 450 moving block [[Communications-based train control|CBTC]] [[Automatic train control|ATC]] under [[Automatic train operation|ATO]] GoA 2 (STO), with subsystems of [[Automatic train protection|ATP]], ATS and [[Computer-based interlocking|CBI]]<ref>{{Cite web|title=Mass transit signalling|url=https://rail.bombardier.com/en/solutions-and-technologies/signalling-and-infrastructure/mass-transit-signalling.html#CITYFLO_450|access-date=2020-06-16|website=Bombardier Transportation|language=en|url-status=dead|archive-url=https://web.archive.org/web/20220101063113/https://rail.bombardier.com/en/solutions-and-technologies/signalling-and-infrastructure/mass-transit-signalling.html|archive-date=2022-01-01}}</ref><ref>{{Cite web|title=Bombardier Projects in Mass-transit signalling|url=https://rail.bombardier.com/content/dam/transportation/products/mass-transit-signalling/BT_PDF_Mass-transit%20signalling.pdf|url-status=dead|archive-url=https://web.archive.org/web/20211123062807/https://rail.bombardier.com/content/dam/transportation/products/mass-transit-signalling/BT_PDF_Mass-transit%20signalling.pdf|archive-date=2021-11-23}}</ref>
| map = {{Sukhumvit Line route}}
| map = {{Sukhumvit Line route}}
| map_state = collapsed
| map_state = collapsed
}}
}}
The '''Sukhumvit Line''' ({{lang-th|รถไฟฟ้า สายสุขุมวิท}}) is an elevated metro rail line of the [[BTS Skytrain]] in [[Bangkok]], Thailand. From the central [[Siam Station]], where it connects with the [[Silom Line]], the line runs both northwards along [[Phaya Thai Road|Phaya Thai]] and [[Phahon Yothin Road|Phahon Yothin]] Roads to [[Khu Khot BTS station|Khu Khot]] in [[Lam Luk Ka District]] in [[Pathum Thani Province|Pathum Thani]], and eastwards along Rama I, [[Phloen Chit Road|Phloen Chit]] and [[Sukhumvit Road|Sukhumvit]] Roads, through [[Bang Na District]] to [[Kheha BTS station|Kheha Station]] in [[Samut Prakan Province|Samut Prakan]]. BTS daily ridership (2019) is 740,000 passengers per day.<ref>{{cite news |last1=Limviphuwat |first1=Phuwit |title=Mass Transit not keeping up |url=http://www.nationmultimedia.com/detail/national/30369594 |access-date=18 May 2019 |work=The Nation |date=18 May 2019}}</ref>
'''The Elevated Train in Commemoration of [[Bhumibol Adulyadej|HM the King's]] 6th Cycle Birthday 1st line''', also known as '''Sukhumvit Line''', is one of the rapid transit lines of the [[BTS Skytrain|BTS Skytrain System]] in [[Bangkok]], Thailand.'''<ref>{{Cite web |title=รถไฟฟ้าบีทีเอส (BTS Skytrain) |url=https://www.bts.co.th/eng/info/info-history.html}}</ref>''' The line runs from [[Siam Station]], where it interchanges with the [[Silom Line]], and continues both northwards along [[Phaya Thai Road|Phaya Thai]] and [[Phahon Yothin Road|Phahon Yothin]] Roads to [[Khu Khot BTS station|Khu Khot]] in [[Lam Luk Ka District]], [[Pathum Thani Province|Pathum Thani]], and eastwards along Rama I, [[Phloen Chit Road|Phloen Chit]] and [[Sukhumvit Road|Sukhumvit]] Roads, through [[Bang Na District]] to [[Kheha BTS station|Kheha Station]] in [[Samut Prakan Province|Samut Prakan]].


The line was first opened on 5 December 1999, along with the [[Silom Line]]. Both lines are operated by the [[Bangkok Mass Transit System Public Company Limited]] under a 30-year concession from the [[Bangkok Metropolitan Administration]]. When it opened, the line ran from [[Mo Chit BTS station|Mo Chit]] to [[On Nut BTS station|On Nut]] covering a total distance of {{convert|16.7|km|abbr=on}} with 17 stations. {{As of|2024|October|post=,}} Sukhumvit Line is one of the main arteries of the [[Mass Rapid Transit Master Plan in Bangkok Metropolitan Region|Bangkok Mass Rapid Transit System]] with 900,000 daily passengers per day (combined with the [[Silom Line]]). The line rapidly expanded from 2011 until 2021, tripling its distance through three extension projects and reaching a total length of {{convert|51.17|km|abbr=on}} with 47 stations.
==History==
The first part of the line opened in December 1999 and consisted of seventeen stations from Mo Chit to On Nut. Currently, there are 47 stations in operation for {{Cvt|54.25|km}}<ref>{{Cite web |title=Structure and Stations : Routes |url=https://www.bts.co.th/eng/library/system-structuer.html |access-date=2023-07-23 |website=www.bts.co.th}}</ref> from origin to destination. Its formal name is '''The Elevated Train in Commemoration of HM the King's 6th Cycle Birthday 1st line''' ({{lang-th|รถไฟฟ้าเฉลิมพระเกียรติ 6 รอบพระชนมพรรษา สาย 1}}).<ref>{{Cite web|url=https://www.bts.co.th/eng/info/info-history.html|title=รถไฟฟ้าบีทีเอส (BTS Skytrain)}}</ref>


==Stations==
== History ==

{{see|List of rapid transit stations in Bangkok}}A planned station at N6 has never been built.
=== Original plan ===
{| class="wikitable"
The Sukhumvit Line's initial proposal was for {{convert|12.8|km|abbr=on}} route running from N4 station to E9 station with the depot located at [[Lumphini Park]] near the [[Silom Line]]. However, this location for the depot faced backlash from the public opinion, which argued that it violated [[Vajiravudh|King Rama VI]]'s intention in donating his land to establish [[Lumphini Park]] for the public. Additionally, there were protests demanding that the construction of both Skytrain lines be built underground instead of being fully elevated. Therefore, several alternative locations for the depot were considered, such as a vacant land plot in Soi Rangnam owned by the Crowned Property Bureau or the Phra Khanong pumping station in Sukhumvit 50. Ultimately, the [[Bangkok Metropolitan Administration]] decided to relocate the depot to the former site of the Northern Bus Terminal (commonly known as the Mo Chit Bus Terminal). With the decision made, the Sukhumvit Line route was extended from N4 station to N8 station. Several changes were made during the construction, as follows:<ref>{{Cite web |title=Smart EIA Plus : รายละเอียดรายงาน |url=https://eia.onep.go.th/eia/detail?id=6659#:~:text=%E0%B8%A3%E0%B8%B2%E0%B8%A2%E0%B8%A5%E0%B8%B0%E0%B9%80%E0%B8%AD%E0%B8%B5%E0%B8%A2%E0%B8%94%E0%B8%A3%E0%B8%B2%E0%B8%A2%E0%B8%87%E0%B8%B2%E0%B8%99-,%E0%B8%94%E0%B8%B2%E0%B8%A7%E0%B8%99%E0%B9%8C%E0%B9%82%E0%B8%AB%E0%B8%A5%E0%B8%94%E0%B9%84%E0%B8%9F%E0%B8%A5%E0%B9%8C%E0%B8%A3%E0%B8%B2%E0%B8%A2%E0%B8%87%E0%B8%B2%E0%B8%99,-%E0%B9%80%E0%B8%A5%E0%B8%82%E0%B8%97%E0%B8%B5%E0%B9%88%E0%B8%A3%E0%B8%B2%E0%B8%A2%E0%B8%87%E0%B8%B2%E0%B8%99%20: |access-date=2024-09-26 |website=eia.onep.go.th}}</ref>
|+
*N3, N4, E8, and E9 stations were changed from an island platform to side platforms.
! style="background:#{{rcr|BTS Skytrain|Sukhumvit}}; color:white;" colspan="2" |Stop pattern
*The fully operational year was pushed from the end of 1996 to the end of 1999.
*Station designs were drastically changed from the EIA reports.
*CEN station was moved from the east side of Chaloem Phao junction to the west side.
*E1 station was moved from the east side of the Chit Lom junction to the west side, in front of [[Mater Dei School (Thailand)|Mater Dei School]], with the two entrances in front of the school being canceled due to protests from school staffs and students concerned about privacy, landscape, and air pollution issues.
*E2 station was originally located between Sukhumvit 2 and [[Nana, Bangkok|Soi Nana]] but was later moved to the west side of the [[Chaloem Maha Nakhon Expressway]].
*E4 station was moved from the east side of the Asok junction to the west side.

=== Extensions ===

==== Bearing Extension ====
Construction started in August 2006 on a four-billion baht, {{Cvt|5.25|km}} extension from On Nut to Bearing which included 5 new stations<ref>Groundbreaking starts on new BTS extension, ''Daily News'', 15 August 2006</ref> The extension was funded by the BMA.<ref>BTS extension budget cut, ''Bangkok Post'', 15 December 2006</ref> The original scheduled opening date was mid-2009. However, a delay in tendering the contract for the electrical and signaling works resulted in a two-year delay.

The extension did not open until over two years later, on 12 August 2011. The delay in opening prompted the BMA to offer free travel on this extension until the end of 2011 as compensation.

==== Samut Prakan Extension ====
Construction started in April 2012 on a {{Cvt|12.6|km}}, nine station extension from [[Bearing BTS station|Bearing station]] to [[Kheha BTS station|Kheha station]]. The extension was funded by the [[Mass Rapid Transit Authority of Thailand|MRTA]] as it is outside [[Bangkok Metropolitan Administration|BMA]] city limits, Bangkok Province. Construction was contracted to take 1,350 days and the extension was originally scheduled to open by early 2017. In April 2013, the MRTA awarded Ch Karnchang the contract for track laying and electrical systems.<ref>"Ch Karnchang gets Phase 2 of Bearing-Samut Prakan route" ''The Nation'', 13 April 2013</ref>

In June 2014, civil works were stated to be 28.3 percent complete. In August 2016, the BMA agreed to take over the operation of the extension from MRTA. Delays over the agreement of how much the BMA should pay MRTA caused a delay in the commencement of test runs on the extension. Track works were 98% completed by November 2016. The total cost of the extension was estimated at 21.4 billion baht.<ref>{{Cite news |title=BMA to postpone test run of Bearing-Samrong skytrain |url=http://www.bangkokpost.com/news/general/1140841/bma-to-postpone-test-run-of-bearing-samrong-skytrain |access-date=2016-11-22 |newspaper=Bangkok Post}}</ref> In January 2017, it was announced that the opening of the extension could be further delayed to 2018-2019 due to budgetary concerns and ongoing disputes between the MRTA and BMA.<ref>{{Cite news |author=Sasiwan Mokkhasen |date=2017-01-31 |title=Green Line Going Nowhere for at Least Two Years |url=http://www.khaosodenglish.com/news/transpo/2017/01/31/green-line-going-nowhere-least-two-years/ |access-date=2017-02-25 |newspaper=Khaosod English |language=en-US}}</ref>

The first {{Cvt|1.2|km}} section of the extension to [[Samrong station]] opened on 3 April 2017.<ref>{{Cite news |author=Asaree Thaitrakulpanich |date=2017-02-24 |title=First Station of Stalled BTS Green Line to Open April 1 |url=http://www.khaosodenglish.com/news/transpo/2017/02/24/first-station-stalled-bts-green-line-open-april-1/ |access-date=2017-02-25 |newspaper=Khaosod English |language=en-US}}</ref> The full extension to [[Kheha BTS station|Kheha]] opened on 6 December 2018.<ref>{{cite news |date=1 December 2017 |title=MRTA pushes to fast-track launch of South Green Line |url=https://www.bangkokpost.com/archive/mrta-pushes-to-fast-track-launch-of-south-green-line/1369887 |newspaper=Bangkok Post}}</ref>

==== Khu Khot Extension ====
An 11.4&nbsp;km, 11 station northern extension from [[Mo Chit BTS station|Mo Chit station]] to [[Saphan Mai]] in [[Don Mueang District]] had been planned since the Sukhumvit Line opened. Originally, this extension was scheduled to be completed by 2008. However, due to a combination of changes in government, a prolonged environmental study, and problems with locating a suitable train depot the extension was continually delayed. A further {{Cvt|16.5|km}}, nine station extension from Saphan Mai to Khu Khot was also planned once the extension to Saphan Mai had been completed.

After multiple delays, in mid-2013 a decision was made to tender extensions (1) and (2) at the same time, by the end of 2013. However, the dissolution of parliament in November 2013 delayed this yet again. A tender was finally released in January 2014<ref>http://www.mrta.co.th/sysRegister/register131217/proc17122556.pdf {{Bare URL PDF|date=March 2022}}</ref> with an April deadline before being delayed until late May 2014 due to concerns from bidders.<ref>http://www.prachachat.net/news_detail.php?newsid=1401076541 "รฟม.ปรับทีโออาร์หมอชิต-คูคต กลางปี59 เปิดให้บริการสายสีม่วง" ''Prachachat News'', 26 May 2014</ref> [[2014 Thai coup|A military coup]] in late-May 2014 suspended the bidding process whilst the military administration reviewed all major projects. In late June, the military administration affirmed that the tender would proceed before the end of 2014. In August 2014, the MRTA announced that the new tender deadline was 30 September 2014.<ref>{{cite news |title=ข่าวรอบวัน |url=http://www.prachachat.net/news_detail.php?newsid=1408439328 |newspaper=ประชาชาติธุรกิจ}}</ref> Five bidders qualified and the successful bids were announced in December 2014.<ref>{{Cite web |title=5กลุ่มบริษัทผ่านคุณสมบัติสร้างรถไฟสีเขียว คาดหาผู้รับเหมาได้ไม่เกินต้นปี58 : มติชนออนไลน์ |url=http://www.matichon.co.th/news_detail.php?newsid=1412581507 |url-status=dead |archive-url=https://web.archive.org/web/20160304031709/http://www.matichon.co.th/news_detail.php?newsid=1412581507 |archive-date=2016-03-04 |access-date=2014-10-08}}</ref> The tender specified a construction period of 1,350 days.

On 3 April 2015, MRTA signed four contracts for this extension:<ref>{{cite web |title=รฟม.เซ็นสัญญารถไฟฟ้าสายสีเขียวเหนือ เริ่มสร้างมิ.ย 58 คาดเปิดใช้ต้นปี |url=http://www.ryt9.com/s/iq03/2130477}}</ref>
{| class="wikitable" style="margin:auto;font-align:center;text-align:center;font-size:90%;&quot;"
! style="background:#{{rcr|BTS Skytrain|Sukhumvit}}; color:white;" |Contract
! style="background:#{{rcr|BTS Skytrain|Sukhumvit}}; color:white;" |Notes
! style="background:#{{rcr|BTS Skytrain|Sukhumvit}}; color:white;" |Contractors
! style="background:#{{rcr|BTS Skytrain|Sukhumvit}}; color:white;" |Length
! style="background:#{{rcr|BTS Skytrain|Sukhumvit}}; color:white;" |Costs
|-
|-
|1
|style="text-align: center;" |●
| style="text-align: left;" | [[Mo Chit BTS station|Mo Chit]] to [[Saphan Mai BTS station|Saphan Mai]]
|All trains stop at this station
| style="text-align: left;" |[[Italian-Thai Development]]
|{{convert|2.8|km|abbr=on}}
|฿15,269 million
|-
|-
|2
| style="text-align: center;" |&#124;
| style="text-align: left;" |[[Saphan Mai]] to [[Khu Khot]]
|All trains skip this station
| style="text-align: left;" |<abbr title="Unique Engineering and Construction">UN</abbr>-<abbr title="Sinohydro Corporation">SH</abbr>-<abbr title="China Habour Engineering">CH</abbr> joint-venture
|{{convert|2.6|km|abbr=on}}
|฿6,657 million
|-
|-
|3
|style="text-align: center;" |<b>/</b>
| style="text-align: left;" |Khu Khot Depot and Park & Ride buildings at [[Yaek Kor Por Aor BTS station|Yaek Kor Por Aor]] and [[Khu Khot BTS station|Khu Khot]] stations
|Some trains terminate at this station
| style="text-align: left;" |<abbr title="Sino-Thai Engineering and Construction">STEC</abbr>-<abbr title="A.S. Associated Engineering (1964)">AS</abbr> joint-venture
|{{convert|11|km|abbr=on}}
|฿4,019 million
|-
|4
| style="text-align: left;" |Track laying and system design
| style="text-align: left;" |<abbr title="Sino-Thai Engineering and Construction">STEC</abbr>-<abbr title="A.S. Associated Engineering (1964)">AS</abbr> joint-venture
|{{convert|10.5|km|abbr=on}}
|฿2,841 million
|}
|}
[[File:Green Line MRT Project Photographs by Peak Hora (15).jpg|left|thumb|Construction of the viaduct before entering Ha Yaek Lat Phrao station in 2018.|245x245px]]
{| class="wikitable" width="65%"
The MRTA, contactors and Thai Traffic Police met on 2 September 2015 and confirmed construction would begin on 8 September 2015. A flyover at Kasetsart was demolished, which commenced on 12 September 2015.<ref>{{cite web |title=ผู้จัดการออนไลน์ รวดเร็ว สด ทุกเหตุการณ์ |url=http://www.manager.co.th/iBizchannel/ViewNews.aspx?NewsID=9580000099688}}</ref>
! style="background:#{{rcr|BTS Skytrain|Sukhumvit}}; color:white;" colspan="5" span |Services

At 31 December 2017, the progress of civil works construction was at 53.31% according to the MRTA.<ref>https://www.mrta.co.th/th/news/information/ความก-าวหน-าการก-อสร-างรถไฟฟ-า-ณ-31-ธ-นวาคม-2560/. ''MRTA Press'', 16 January 2018</ref> {{As of|2018|04|post=,}} the MRTA stated that civil works progress had advanced to 63.27%.<ref>https://www.mrta.co.th/th/news/information/ความก-าวหน-าการก-อสร-างรถไฟฟ-า-ณ-30-เมษายน-2561/. ''MRTA Press'', 30 April 2018</ref> {{As of|2018|09|30|post=,}} overall construction had progressed to 78.79%.<ref>{{cite web |title=การรถไฟฟ้าขนส่งมวลชนแห่งประเทศไทย on Facebook |url=https://www.facebook.com/MRTA.PR/photos/a.1433440196872710/2109998672550189/. |url-access=limited |archive-url=https://ghostarchive.org/iarchive/facebook/1409174012632662/2109998672550189 |archive-date=2022-04-30 |website=[[Facebook]]}}{{cbignore}}''MRTA Press''{{User-generated source|certain=yes|date=March 2022}}</ref> By the end of March 2019, civil construction had nearly been completed having progressed to 99.42%.<ref>https://www.mrta.co.th/th/news/information/ความก-าวหน-าการก-อสร-างรถไฟฟ-า-ณ-30-เมษายน-2561/. ''MRTA Press'', 30 April 2018</ref>

Testing of the final 9.8&nbsp;km, seven-station-section from Wat Phra Sri Mahathat (N17) to Khu Khot (N24) began on 5 October.<ref>{{cite news |date=7 October 2020 |title=BTS tests Green Line trains at seven new stations before public opening at year-end |url=https://www.https://www.nationthailand.com/news/30395767 |url-status=dead |archive-url=https://web.archive.org/web/20130819141428/http://https/ |archive-date=19 August 2013 |access-date=17 February 2022 |newspaper=The Nation}}</ref> The final section was officially opened on 16 December 2020 by the Prime Minister.<ref>{{cite news |date=17 November 2020 |title=นับถอยหลัง 4 ธ.ค. 63 รถไฟฟ้า BTS สายสีเขียว เปิดทุกสถานี เชื่อม 3 จังหวัด |url=https://www.tnnthailand.com/content/62397 |newspaper=TNN Thailand}}</ref>

==== Tamru Extension ''(future)'' ====
There is a plan to extend Sukhumvit Line from Kheha to Tamru for {{convert|10.1|km|abbr=on}}, including 5 additional stations: Sawangkhaniwat, Mueang Boran, Si Chan Pradit, Bang Pu, and Tamru. This extension has been suspended indefinitely until clarity is reached regarding passenger guarantees.
{| class="wikitable" style="margin:auto;font-align:center;text-align:center;font-size:90%;&quot;&quot;"
! style="background:#{{rcr|BTS Skytrain|Sukhumvit}}; color:white;" rowspan="2" span ; |Code
! style="background:#{{rcr|BTS Skytrain|Sukhumvit}}; color:white;" colspan="2" span ; |Station Name
! style="background:#{{rcr|BTS Skytrain|Sukhumvit}}; color:white;" rowspan="2" span ; |Planned Opening
! style="background:#{{rcr|BTS Skytrain|Sukhumvit}}; color:white;" rowspan="2" span ; |Platform Type
|-
! style="background:#{{rcr|BTS Skytrain|Sukhumvit}}; color:white;" rowspan="1" span ; |English
! style="background:#{{rcr|BTS Skytrain|Sukhumvit}}; color:white;" rowspan="1" span ; |Thai
|-
! colspan="5" |↓ Continue from [[Kheha BTS station|Kheha]] ↓
|-
| [[File:BTS E24 opaque.png|25px]]
| Sawangkhaniwat
| สวางคนิวาส
| rowspan="5" |<abbr title="To be announced">TBA</abbr>
|Side
|-
| [[File:BTS E25 opaque.png|25px]]
| Mueang Boran
| เมืองโบราณ
|Side
|-
| [[File:BTS E26 opaque.png|25px]]
| Si Chan Pradit
| ศรีจันทร์ประดิษฐ์
|Side
|-
| [[File:BTS E27 opaque.png|25px]]
| Bang Pu
| บางปู
|Side
|-
|[[File:BTS E28 opaque.png|24x24px]]
|Tamru
|ตำหรุ
|Side
|}

==== Lam Luk Ka Extension ''(future)'' ====
There is a plan to extend Sukhumvit Line from Khu Khot Station eastwards for {{convert|7.8|km|abbr=on}}, including four additional stations: Khlong Sam, Khlong Si, Khlong Ha, and Eastern Ring Road-Lam Luk Ka. This extension has been suspended indefinitely until clarity is reached regarding passenger guarantees.
{| class="wikitable" style="margin:auto;font-align:center;text-align:center;font-size:90%;&quot;&quot;"
! style="background:#{{rcr|BTS Skytrain|Sukhumvit}}; color:white;" rowspan="2" span ; |Code
! style="background:#{{rcr|BTS Skytrain|Sukhumvit}}; color:white;" colspan="2" span ; |Station Name
! style="background:#{{rcr|BTS Skytrain|Sukhumvit}}; color:white;" rowspan="2" span ; |Planned Opening
! style="background:#{{rcr|BTS Skytrain|Sukhumvit}}; color:white;" rowspan="2" span ; |Platform Type
|-
! style="background:#{{rcr|BTS Skytrain|Sukhumvit}}; color:white;" rowspan="1" span ; |English
! style="background:#{{rcr|BTS Skytrain|Sukhumvit}}; color:white;" rowspan="1" span ; |Thai
|-
! colspan="5" |↓ Continue from [[Khu Khot BTS station|Khu Khot]] ↓
|-
| [[File:BTS N25 opaque.png|24x24px]]
| Khlong Sam
| คลองสาม
| rowspan="4" |<abbr title="To be announced">TBA</abbr>
|Side
|-
| [[File:BTS N26 opaque.png|24x24px]]
| Khlong Si
| คลองสี่
|Side
|-
| [[File:BTS N27 opaque.png|24x24px]]
| Khlong Ha
| คลองห้า
|Side
|-
| [[File:BTS N28 opaque.png|24x24px]]
| Eastern Ring Road-Lam Luk Ka
| วงแหวนตะวันออกลำลูกกา
|Side
|}

== Opening timeline ==
{| class="wikitable" style="margin:auto;font-align:center;text-align:center;font-size:80%;&quot;"
! style="background:#{{rcr|BTS Skytrain|Sukhumvit}}; color:white;" |Date
! style="background:#{{rcr|BTS Skytrain|Sukhumvit}}; color:white;" |Project
! style="background:#{{rcr|BTS Skytrain|Sukhumvit}}; color:white;" |Notes
|-
|5 December 1999
|Bangkok Transit System
| align="left" |Full commercial service was commenced from [[Mo Chit BTS station|Mo Chit]] to [[On Nut BTS station|On Nut]] stations along with the [[Silom Line]].
|-
|12 August 2011
|Bearing Extension
| align="left" |Service extended to [[Bearing BTS station|Bearing station]].
|-
|14 May 2010
! rowspan="5" |
| align="left" |Sukhumvit Line was closed from 17.00 onwards due to [[2010 Thai military crackdown]].
|-
|29 May 2010
| align="left" |Resumed normal service.
|-
|22 May 2014
| align="left" |Sukhumvit Line operated with limited hours from 6:00 to 21:00 due to the [[curfew]], which was a result of the [[2014 Thai coup d'état]].<ref>{{Cite web |title=รถไฟฟ้า BTS-MRT ปิดให้บริการ 3 ทุ่มตั้งแต่คืนนี้ เปิด 6 |url=https://www.ryt9.com/s/iq01/1903385 |access-date=2024-09-12 |website=ryt9.com |language=th}}</ref>
|-
|28 May 2014
| align="left" |Service hours were extended to 06.00-23.00<ref>{{Cite web |title=รถไฟฟ้า BTS-MRT ปรับเวลาเดินรถใหม่ 06.00-23.00 น. ตั้งแต่ 28 |url=https://www.ryt9.com/s/iq02/1906748 |access-date=2024-09-12 |website=ryt9.com |language=th}}</ref>
|-
|14 June 2014
| align="left" |Resumed normal service.
|-
|3 April 2017
| rowspan="3" |Samut Prakan Extension
| align="left" |Service extended to [[Samrong station]].
|-
|6 December 2018
| align="left" |Shuttle service has been deployed from [[Samrong station|Samrong]] to [[Kheha BTS station|Kheha]] stations.
|-
|11 May 2019
| align="left" |Full commercial service was commenced from [[Mo Chit BTS station|Mo Chit]] to [[Kheha BTS station|Kheha]] stations.<ref>{{Cite web |title=บีทีเอสปรับเดินรถสายสุขุมวิท วิ่งถึงสถานีเคหะฯ ไม่ต้องเปลี่ยนขบวน |url=https://www.thairath.co.th/money/economics/thailand_econ/1563628 |access-date=2024-09-27 |website=THAIRATH Money}}</ref>
|-
|9 August 2019
| rowspan="3" |Khu Khot Extension
| align="left" |Service extended to [[Ha Yaek Lat Phrao BTS station|Ha Yaek Lat Phrao station]].
|-
|4 December 2019
| align="left" |Service extended to [[Kasetsart University BTS station|Kasetsart University station]].
|-
|5 June 2020
| align="left" |Service extended to [[Wat Phra Sri Mahathat station|Wat Phra Si Mahathat station]].
|-
|17 October 2020
! rowspan="2" |
| align="left" |Sukhumvit Line was temporarily closed from 15.00 due to the [[2020–2021 Thai protests]].<ref>{{Cite web |title=ความเคลื่อนไหวก่อนชุมนุม 17 ตุลา |url=https://www.thaipbs.or.th/news/content/297469 |access-date=2024-09-12 |website=Thai PBS |language=th}}</ref>
|-
|18 October 2020
| align="left" | [[Mo Chit BTS station|Mo Chit]], [[Ha Yaek Lat Phrao BTS station|Ha Yaek Lat Phrao]], [[Phahon Yothin 24 BTS station|Phahon Yothin 24]], [[Asok BTS station|Asok]], [[Udom Suk BTS station|Udom Suk]], and [[Bang Na BTS station|Bang Na]] stations were temporarily closed due to the protests from 14.30<ref>{{Cite web |date=2020-10-18 |title=รถไฟฟ้าMRT ปิด 5 สถานี ส่วน BTS ปิด10 สถานี จนกว่าสถานการณ์คลี่คลาย |url=https://www.thairath.co.th/news/politic/1955750 |access-date=2024-09-12 |website=www.thairath.co.th |language=th}}</ref>
|-
|16 December 2020
|Khu Khot Extension
| align="left" |Service extended to [[Khu Khot BTS station|Khu Khot station]].
|}

== Stations ==
{{see|List of rapid transit stations in Bangkok}}
{| class="wikitable" style="margin:auto;font-align:center;text-align:center;font-size:80%;&quot;"
! style="background:#{{rcr|BTS Skytrain|Sukhumvit}}; color:white;" rowspan="2" span ; |Code
! style="background:#{{rcr|BTS Skytrain|Sukhumvit}}; color:white;" rowspan="2" span ; |Code
! style="background:#{{rcr|BTS Skytrain|Sukhumvit}}; color:white;" colspan="2" span |Station Name
! style="background:#{{rcr|BTS Skytrain|Sukhumvit}}; color:white;" colspan="2" span |Station Name
! style="background:#{{rcr|BTS Skytrain|Sukhumvit}}; color:white;"rowspan="2" |Opened
! style="background:#{{rcr|BTS Skytrain|Sukhumvit}}; color:white;" rowspan="2" |'''Image'''
! style="background:#{{rcr|BTS Skytrain|Sukhumvit}}; color:white;"rowspan="2" |Platform
! style="background:#{{rcr|BTS Skytrain|Sukhumvit}}; color:white;" rowspan="2" |Opened
! style="background:#{{rcr|BTS Skytrain|Sukhumvit}}; color:white;" rowspan="2" |Platform
Type
Type
! style="background:#{{rcr|BTS Skytrain|Sukhumvit}}; color:white;" rowspan="2" span ; |Transfers/Notes
! style="background:#{{rcr|BTS Skytrain|Sukhumvit}}; color:white;" rowspan="2" |Park & Ride
! style="background:#{{rcr|BTS Skytrain|Sukhumvit}}; color:white;" colspan="2" span |Location
! style="background:#{{rcr|BTS Skytrain|Sukhumvit}}; color:white;" rowspan="2" span ; |Transfers
! style="background:#{{rcr|BTS Skytrain|Sukhumvit}}; color:white;" rowspan="2" span ; |Notes
|-
|-
! style="background:#{{rcr|BTS Skytrain|Sukhumvit}}; color:white;" colspan="1" span |Normal
! style="background:#{{rcr|BTS Skytrain|Sukhumvit}}; color:white;" colspan="1" span |Peak-hour
! style="background:#{{rcr|BTS Skytrain|Sukhumvit}}; color:white;" colspan="3" span |Special

! style="background:#{{rcr|BTS Skytrain|Sukhumvit}}; color:white;" colspan="1" span |English
! style="background:#{{rcr|BTS Skytrain|Sukhumvit}}; color:white;" colspan="1" span |English
! style="background:#{{rcr|BTS Skytrain|Sukhumvit}}; color:white;" colspan="1" span |Thai
! style="background:#{{rcr|BTS Skytrain|Sukhumvit}}; color:white;" colspan="1" span |Thai
! style="background:#{{rcr|BTS Skytrain|Sukhumvit}}; color:white;" colspan="1" span |District
! style="background:#{{rcr|BTS Skytrain|Sukhumvit}}; color:white;" colspan="1" span |Province
|-
|-
|style="text-align: center;" |●
| rowspan="16" style="background:lightgrey;" |
| colspan="2" rowspan="11" style="background:lightgrey;"|
| rowspan="16" style="background:lightgrey;" |
| [[File:BTS N24.svg|25px]]
| [[File:BTS N24.svg|25px]]
| [[Khu Khot BTS station|Khu Khot]]
| [[Khu Khot BTS station|Khu Khot]]
| คูคต
| คูคต
|[[File:Khu Khot Station.jpg|frameless]]
| rowspan="7" |16 December 2020
| rowspan="7" |{{Start date and age|2020|12|16|df=y}}
|style="text-align: center;" |Side
| style="text-align: center;" |Side
|√
|
|
|
| [[Lam Luk Ka District|Lam Luk Ka]]
| [[Pathum Thani Province|Pathum Thani]]
|-
|-
|style="text-align: center;" |●
| [[File:BTS N23.svg|25px]]
| [[File:BTS N23.svg|25px]]
| [[Yaek Kor Por Aor BTS station|Yaek Kor Por Aor]]<br />({{RTGS|Yaek Kho Po O}})
| [[Yaek Kor Por Aor BTS station|Yaek Kor Por Aor]]
| แยกคปอ.
| แยก คปอ.
|[[File:Yaek Kor Por Aor BTS station 02.jpg|frameless]]
|style="text-align: center;" |Side
| style="text-align: center;" |Side
|√
|
|
|
| rowspan="3" | [[Don Mueang District|Don Mueang]]
| rowspan="38" |[[Bangkok]]
|-
|-
|style="text-align: center;" |●
| [[File:BTS N22.svg|25px]]
| [[File:BTS N22.svg|25px]]
| [[Royal Thai Air Force Museum BTS station|Royal Thai Air Force Museum]]<br />({{RTGS|Phiphithaphan Kong Thap Akat}})
| [[Royal Thai Air Force Museum BTS station|Royal Thai Air Force Museum]]
| พิพิธภัณฑ์กองทัพอากาศ
| พิพิธภัณฑ์กองทัพอากาศ
|[[File:Royal Thai Air Force Museum BTS station view from the street.jpg|frameless]]
|style="text-align: center;" |Side
| style="text-align: center;" |Side
| -
|
|
|
|-
|-
|style="text-align: center;" |●
| [[File:BTS N21.svg|25px]]
| [[File:BTS N21.svg|25px]]
| [[Bhumibol Adulyadej Hospital BTS station|Bhumibol Adulyadej Hospital]]<br />({{RTGS|Rong Phayaban Phumiphon Adunyadet}})
| [[Bhumibol Adulyadej Hospital BTS station|Bhumibol Adulyadej Hospital]]
| โรงพยาบาลภูมิพล-อดุลยเดช
| โรงพยาบาลภูมิพลอดุลยเดช
|[[File:Bhumibol Adulyadej Hospital station 20230903-1.jpg|frameless]]
|style="text-align: center;" |Side
| style="text-align: center;" |Side
| -
|
|
|
|-
|-
|style="text-align: center;" |●
| [[File:BTS N20.svg|25px]]
| [[File:BTS N20.svg|25px]]
| [[Saphan Mai BTS station|Saphan Mai]]
| [[Saphan Mai BTS station|Saphan Mai]]
| สะพานใหม่
| สะพานใหม่
|[[File:Saphan Mai station 20230903-1.jpg|frameless]]
|style="text-align: center;" |Side
| style="text-align: center;" |Side
| -
|
|
|
| rowspan="5" | [[Bang Khen District|Bang Khen]]
|-
|-
|style="text-align: center;" |●
| [[File:BTS N19.svg|25px]]
| [[File:BTS N19.svg|25px]]
| [[Sai Yud BTS station|Sai Yud]]<br />({{RTGS|Sai Yut}})
| [[Sai Yud BTS station|Sai Yud]]
| สายหยุด
| สายหยุด
|[[File:Sai Yud BTS station view from the street.jpg|frameless]]
|style="text-align: center;" |Side
| style="text-align: center;" |Side
| -
|
|
|
|-
|-
|style="text-align: center;" |●
| [[File:BTS N18.svg|25px]]
| [[File:BTS N18.svg|25px]]
| [[Phahon Yothin 59 BTS station|Phahon Yothin 59]]<br />({{RTGS|Phahon Yothin Ha Sip Kao}})
| [[Phahon Yothin 59 BTS station|Phahon Yothin 59]]
| พหลโยธิน 59
| พหลโยธิน 59
|[[File:Phahonyothin 59 BTS station view from the street.jpg|frameless]]
|style="text-align: center;" |Side
| style="text-align: center;" |Side
| -
|
|
|
|-
|-
|style="text-align: center;" |●
| [[File:BTS N17.svg|25px]]
| [[File:BTS N17.svg|25px]]
|[[Wat Phra Sri Mahathat BTS station|Wat Phra Sri Mahathat]]<br />({{RTGS|Wat Phra Si Mahathat}})
|[[Wat Phra Sri Mahathat BTS station|Wat Phra Sri Mahathat]]
| วัดพระศรีมหาธาตุ
| วัดพระศรีมหาธาตุ
|[[File:BTS Wat Phra Sri Mahathat Station,Bangkok (17).jpg|frameless]]
| rowspan="4" |5 June 2020
| rowspan="4" |{{Start date and age|2020|06|05|df=y}}
|style="text-align: center;" |Island
| style="text-align: center;" |Island
| '''Interchange station''' with {{rint|bangkok|Pink}}
| -
| align="left" |'''Interchange station''' with {{rint|bangkok|Pink}}
|
|-
|-
|style="text-align: center;" |●
| [[File:BTS N16.svg|25px]]
| [[File:BTS N16.svg|25px]]
| [[11th Infantry Regiment BTS station|11th Infantry Regiment]]<br />({{RTGS|''Krom Thahan Rap Thi Sip Et''}})
| [[11th Infantry Regiment BTS station|11th Infantry Regiment]]
| กรมทหารราบที่ 11
| กรมทหารราบที่ 11
|[[File:BTS 11th Infantry Regiment - Platform - Inbound .jpg|frameless]]
|style="text-align: center;" |Side
| style="text-align: center;" |Side
| -
|
|
|
|-
|-
|style="text-align: center;" |●
| [[File:BTS N15.svg|25px]]
| [[File:BTS N15.svg|25px]]
| [[Bang Bua BTS station|Bang Bua]]
| [[Bang Bua BTS station|Bang Bua]]
| บางบัว
| บางบัว
|[[File:BTS Bang Bua - ticketing machines and exits.jpg|frameless]]
|style="text-align: center;" |Side
| style="text-align: center;" |Side
| -
|
|
|
| rowspan="8" | [[Chatuchak District|Chatuchak]]
|-
|-
|style="text-align: center;" |●
| [[File:BTS N14.svg|25px]]
| [[File:BTS N14.svg|25px]]
| [[Royal Forest Department BTS station|Royal Forest Department]]<br />({{RTGS|''Krom Pa Mai''}})
| [[Royal Forest Department BTS station|Royal Forest Department]]
| กรมป่าไม้
| กรมป่าไม้
|[[File:BTS Royal Forest Department - station.jpg|frameless]]
|style="text-align: center;" |Side
| style="text-align: center;" |Side
| -
|
|
|
|-
|-
|style="text-align: center;" |<b>/</b>
|style="text-align: center;" |●
|style="text-align: center;" |●
| [[File:BTS N13.svg|25px]]
| [[File:BTS N13.svg|25px]]
| [[Kasetsart University BTS station|Kasetsart University]]<br />({{RTGS|''Maha Witthayalai Kasetsat''}})
| [[Kasetsart University BTS station|Kasetsart University]]
| มหาวิทยาลัยเกษตรศาสตร์
| มหาวิทยาลัยเกษตรศาสตร์
|[[File:BTS Kasetsart University - Station close up.jpg|frameless]]
| rowspan="4" |4 December 2019
| rowspan="4" |{{Start date and age|2019|12|04|df=y}}
|style="text-align: center;" |Side
| style="text-align: center;" |Side
|''Proposed connecting station to {{rint|bangkok|Brown}}''
| -
| align="left" |'''Connecting station''' to {{rint|bangkok|Brown}} ''<small>(future)</small>''
|
|-
|-
|style="text-align: center;" |●
|style="text-align: center;" |●
|style="text-align: center;" |●
| [[File:BTS N12.svg|25px]]
| [[File:BTS N12.svg|25px]]
| [[Sena Nikhom BTS station|Sena Nikhom]]
| [[Sena Nikhom BTS station|Sena Nikhom]]
| เสนานิคม
| เสนานิคม
|[[File:BTS Sena Nikhom - Station.jpg|frameless]]
|style="text-align: center;" |Side
| style="text-align: center;" |Side
| -
|
|
|
|-
|-
|style="text-align: center;" |●
|style="text-align: center;" |●
|style="text-align: center;" |●
| [[File:BTS N11.svg|25px]]
| [[File:BTS N11.svg|25px]]
| [[Ratchayothin BTS station|Ratchayothin]]
| [[Ratchayothin BTS station|Ratchayothin]]
| รัชโยธิน
| รัชโยธิน
|[[File:BTS Ratchayothin - Station.jpg|frameless]]
|style="text-align: center;" |Side
| style="text-align: center;" |Side
| -
|
|
|
|-
|-
|style="text-align: center;" |●
|style="text-align: center;" |●
|style="text-align: center;" |●
| [[File:BTS N10.svg|25px]]
| [[File:BTS N10.svg|25px]]
| [[Phahonyothin 24 BTS station|Phahon Yothin 24]]<br />({{RTGS|''Phahonyothin Yisip Si''}})
| [[Phahon Yothin 24 BTS station|Phahon Yothin 24]]
| พหลโยธิน 24
| พหลโยธิน 24
|[[File:BTS Phahon Yothin 24 - Station.jpg|frameless]]
|style="text-align: center;" |Side
| style="text-align: center;" |Side
| -
|
|
|
|-
|-
|style="text-align: center;" |<b>/</b>
|style="text-align: center;" |●
|style="text-align: center;" |●
| [[File:BTS N9.svg|25px]]
| [[File:BTS N9.svg|25px]]
| [[Ha Yaek Lat Phrao BTS station|Ha Yaek Lat Phrao]]
| [[Ha Yaek Lat Phrao BTS station|Ha Yaek Lat Phrao]]
| ห้าแยกลาดพร้าว
| ห้าแยกลาดพร้าว
|[[File:Ha Yaek Lat Phrao BTS station 20230903.jpg|frameless]]
|9 August 2019
|{{Start date and age|2019|08|09|df=y}}
|style="text-align: center;" |Island
| style="text-align: center;" |Island
| '''Connecting station''' to [[Phahon Yothin MRT station|Phahon Yothin]] for {{rint|bangkok|Blue}}
| -
| align="left" |'''Connecting station''' to [[Phahon Yothin MRT station|Phahon Yothin]] for {{rint|bangkok|Blue}} , via a 330-metre elevated pedestrian walkway.
|
|-
|-
|style="text-align: center;" |<b>/</b>
|style="text-align: center;" |●
|style="text-align: center;" |●
|style="text-align: center;" |●
|style="text-align: center;" |●
| [[File:BTS N8.svg|25px]]
| [[File:BTS N8.svg|25px]]
| [[Mo Chit BTS station|Mo Chit]]
| [[Mo Chit BTS station|Mo Chit]]
| หมอชิต
| หมอชิต
|[[File:Chatuchak Park and Mo Chit Station.jpg|frameless]]
| rowspan="2" |5 December 1999
| rowspan="2" |{{Start date and age|1999|12|05|df=y}}
|style="text-align: center;" |Side
| style="text-align: center;" |Side
| '''Connecting station''' to [[Chatuchak Park MRT station|Chatuchak Park]] for {{rint|bangkok|Blue}}
|√
| align="left" |'''Connecting station''' to [[Chatuchak Park MRT station|Chatuchak Park]] for {{rint|bangkok|Blue}}
|
|-
|-
|style="text-align: center;" |●
|style="text-align: center;" |●
|style="text-align: center;" |●
|style="text-align: center;" |●
|style="text-align: center;" |●
| [[File:BTS N7.svg|25px]]
| [[File:BTS N7.svg|25px]]
| [[Saphan Khwai BTS station|Saphan Khwai]]
| [[Saphan Khwai BTS station|Saphan Khwai]]
| สะพานควาย
| สะพานควาย
|[[File:Saphan Khwai Station 20230903-1.jpg|frameless]]
|style="text-align: center;" |Side
| style="text-align: center;" |Side
| -
|
|
|
| rowspan="4" | [[Phaya Thai District|Phaya Thai]]
|-bgcolor=lightgrey
|-
|style="text-align: center;" |&#124;
|style="text-align: center;" |&#124;
|style="text-align: center;" |&#124;
|style="text-align: center;" |&#124;
|style="text-align: center;" |&#124;
| [[File:BTS N6 opaque.png|25px]]
| [[File:BTS N6 opaque.png|25px]]
| [[Sena Ruam BTS station|Sena Ruam]]
| [[Sena Ruam BTS station|Sena Ruam]]
| เสนาร่วม<ref>{{Cite news|url=https://www.khaosodenglish.com/news/transpo/2019/04/10/construction-of-sathorn-bts-ghost-station-underway/|title=Construction of Sathorn BTS 'Ghost Station' Underway|last1=Charuvastra|first1=Teeranai|last2=Chief|first2=News|date=2019-04-10|website=Khaosod English|language=en-US|access-date=2020-03-25}}</ref>
| เสนาร่วม<ref>{{Cite news|url=https://www.khaosodenglish.com/news/transpo/2019/04/10/construction-of-sathorn-bts-ghost-station-underway/|title=Construction of Sathorn BTS 'Ghost Station' Underway|last1=Charuvastra|first1=Teeranai|last2=Chief|first2=News|date=2019-04-10|website=Khaosod English|language=en-US|access-date=2020-03-25}}</ref>
|
|style="text-align: center;" |<small>''N/A''</small>
|style="text-align: center;" |Side
| style="text-align: center;" |<small>''<abbr title="To be announced">TBA</abbr>''</small>
| style="text-align: center;" |Side
|''Provisional station''
| -
|
| align="left" |''Provisional station''
|-
|-
|style="text-align: center;" |●
|style="text-align: center;" |●
|style="text-align: center;" |●
|style="text-align: center;" |●
|style="text-align: center;" |●
| [[File:BTS N5.svg|25px]]
| [[File:BTS N5.svg|25px]]
| [[Ari BTS station|Ari]]
| [[Ari BTS station|Ari]]
| อารีย์
| อารีย์
|[[File:Ari Station 20230903-1.jpg|frameless]]
| rowspan="15" |5 December 1999
| rowspan="15" |{{Start date and age|1999|12|05|df=y}}
|style="text-align: center;" |Side
| style="text-align: center;" |Side
| -
|
|
|
|-
|-
|style="text-align: center;" |●
|style="text-align: center;" |●
|style="text-align: center;" |●
|style="text-align: center;" |●
|style="text-align: center;" |●
| [[File:BTS N4.svg|25px]]
| [[File:BTS N4.svg|25px]]
| [[Sanam Pao BTS station|Sanam Pao]]
| [[Sanam Pao BTS station|Sanam Pao]]
| สนามเป้า
| สนามเป้า
|[[File:Sanam Pao Station 20230903-1.jpg|frameless]]
|style="text-align: center;" |Side
| style="text-align: center;" |Side
| -
|
|
|
|-
|-
|style="text-align: center;" |●
|style="text-align: center;" |●
|style="text-align: center;" |●
|style="text-align: center;" |●
|style="text-align: center;" |●
| [[File:BTS N3.svg|25px]]
| [[File:BTS N3.svg|25px]]
| [[Victory Monument BTS station|Victory Monument]]<br />({{RTGS|''Anusawari Chai Samoraphum''}})
| [[Victory Monument BTS station|Victory Monument]]
| อนุสาวรีย์ชัยสมรภูมิ
| อนุสาวรีย์ชัยสมรภูมิ
|[[File:Victory Monument Station 20230903-3.jpg|frameless]]
|style="text-align: center;" |Side
| style="text-align: center;" |Side
| -
|
|
|
| rowspan="3" | [[Ratchathewi District|Ratchathewi]]
|-
|-
|style="text-align: center;" |●
|style="text-align: center;" |●
|style="text-align: center;" |●
|style="text-align: center;" |●
|style="text-align: center;" |●
| [[File:BTS N2.svg|25px]]
| [[File:BTS N2.svg|25px]]
| [[Phaya Thai BTS station|Phaya Thai]]
| [[Phaya Thai BTS station|Phaya Thai]]
| พญาไท
| พญาไท
|[[File:Phaya Thai BTS Station 20230923-1.jpg|frameless]]
|style="text-align: center;" |Side
| style="text-align: center;" |Side
| '''Connecting station''' to {{rint|bangkok|Airport}}
| -
| align="left" |'''Connecting station''' to;<br>• {{rint|bangkok|Airport}}<br>• {{rint|bangkok|LightRed}} ''<small>(future)</small>''
|
|-
|-
|style="text-align: center;" |●
|style="text-align: center;" |●
|style="text-align: center;" |●
|style="text-align: center;" |●
|style="text-align: center;" |●
| [[File:BTS N1.svg|25px]]
| [[File:BTS N1.svg|25px]]
| [[Ratchathewi BTS station|Ratchathewi]]
| [[Ratchathewi BTS station|Ratchathewi]]
| ราชเทวี
| ราชเทวี
|[[File:Ratchatewi Station platform (Dec 2022).jpg|frameless]]
|style="text-align: center;" |Side
| style="text-align: center;" |Side
| -
| align="left" |'''Connecting station''' to {{rint|bangkok|Orange}} ''<small>(under construction)</small>''
|
|
|-
|-
|style="text-align: center;" |●
|style="text-align: center;" |●
|style="text-align: center;" |●
|style="text-align: center;" |●
|style="text-align: center;" |●
| [[File:BTS CEN.svg|25px]]
| [[File:BTS CEN.svg|25px]]
| [[Siam BTS station|Siam]]<br />({{RTGS|''Sayam''}})
| [[Siam BTS station|Siam]]
| สยาม
| สยาม
|[[File:BTS Siam 2022.jpg|frameless]]
|style="text-align: center;" |Stacked Island
| style="text-align: center;" |Stacked Island
| '''[[Cross-platform interchange]]''' with {{rint|bangkok|Silom}}
| -
| rowspan="3" | [[Pathum Wan District|Pathum Wan]]
| align="left" |'''[[Cross-platform interchange]]''' with {{rint|bangkok|Silom}}
|-
|-
|style="text-align: center;" |●
|style="text-align: center;" |●
|style="text-align: center;" |●
|style="text-align: center;" |●
| rowspan="23" |'''Through-services''' to/from [[Bang Wa station|Bang Wa]] via {{rint|bangkok|Silom}}
| [[File:BTS E1.svg|25px]]
| [[File:BTS E1.svg|25px]]
| [[Chit Lom BTS station|Chit Lom]]
| [[Chit Lom BTS station|Chit Lom]]
| ชิดลม
| ชิดลม
|[[File:แยกชิดลม 2021 CHIT LOM INTERSECTION.jpg|frameless]]
|style="text-align: center;" |Side
| style="text-align: center;" |Side
| -
|
|
|
|-
|-
|style="text-align: center;" |●
|style="text-align: center;" |●
|style="text-align: center;" |●
|style="text-align: center;" |●
| [[File:BTS E2.png|25px]]
| [[File:BTS E2.png|25px]]
| [[Phloen Chit BTS station|Phloen Chit]]
| [[Phloen Chit BTS station|Phloen Chit]]
| เพลินจิต
| เพลินจิต
|[[File:Rosewood Bangkok 2021.jpg|frameless]]
|style="text-align: center;" |Side
| style="text-align: center;" |Side
| -
|
|
|
|-
|-
|style="text-align: center;" |●
|style="text-align: center;" |●
|style="text-align: center;" |●
|style="text-align: center;" |●
| [[File:BTS E3.svg|25px]]
| [[File:BTS E3.svg|25px]]
| [[Nana BTS station|Nana]]
| [[Nana BTS station|Nana]]
| นานา
| นานา
|[[File:Nana BTS Skytrain Station - panoramio.jpg|frameless]]
|style="text-align: center;" |Side
| style="text-align: center;" |Side
| -
|
|
|
| rowspan="7" | [[Khlong Toei District|Khlong Toei]] and<br />[[Watthana District|Watthana]]
|-
|-
|style="text-align: center;" |●
|style="text-align: center;" |●
|style="text-align: center;" |●
|style="text-align: center;" |●
| [[File:BTS E4.svg|25px]]
| [[File:BTS E4.svg|25px]]
| [[Asok BTS station|Asok]]
| [[Asok BTS station|Asok]]
| อโศก
| อโศก
|[[File:Bangkok (28384726905).jpg|frameless]]
|style="text-align: center;" |Side
| style="text-align: center;" |Side
| '''Connecting station''' to [[Sukhumvit MRT station|Sukhumvit]] for {{rint|bangkok|Blue}}
| -
| align="left" |'''Connecting station''' to [[Sukhumvit MRT station|Sukhumvit]] for {{rint|bangkok|Blue}}
|
|-
|-
|style="text-align: center;" |●
|style="text-align: center;" |●
|style="text-align: center;" |●
|style="text-align: center;" |●
| [[File:BTS E5.svg|25px]]
| [[File:BTS E5.svg|25px]]
| [[Phrom Phong BTS station|Phrom Phong]]
| [[Phrom Phong BTS station|Phrom Phong]]
| พร้อมพงษ์
| พร้อมพงษ์
|[[File:202307 Platform of Phrom Phong BTS Station.jpg|frameless]]
|style="text-align: center;" |Side
| style="text-align: center;" |Side
| -
|
|
|
|-
|-
|style="text-align: center;" |●
|style="text-align: center;" |●
|style="text-align: center;" |●
|style="text-align: center;" |●
| [[File:BTS E6.svg|25px]]
| [[File:BTS E6.svg|25px]]
| [[Thong Lo BTS station|Thong Lo]]
| [[Thong Lo BTS station|Thong Lo]]
| ทองหล่อ
| ทองหล่อ
|[[File:Thong Lo Station platform.jpg|frameless]]
|style="text-align: center;" |Side
| style="text-align: center;" |Side
| -
|
|
|
|-
|-
|style="text-align: center;" |●
|style="text-align: center;" |●
|style="text-align: center;" |●
|style="text-align: center;" |●
| [[File:BTS E7.svg|25px]]
| [[File:BTS E7.svg|25px]]
| [[Ekkamai BTS station|Ekkamai]]
| [[Ekkamai BTS station|Ekkamai]]
| เอกมัย
| เอกมัย
|[[File:E7 Ekkamai Station.jpg|frameless]]
|style="text-align: center;" |Side
| style="text-align: center;" |Side
| ''Proposed connecting station to {{rint|bangkok|Grey}}'' <small>''(north section)''</small>
| -
| align="left" |'''Connecting statio'''n to {{rint|bangkok|Grey}} <small>''(north section; future)''</small>
|
|-
|-
|style="text-align: center;" |●
|style="text-align: center;" |●
|style="text-align: center;" |●
|style="text-align: center;" |●
| [[File:BTS E8.svg|25px]]
| [[File:BTS E8.svg|25px]]
| [[Phra Khanong BTS station|Phra Khanong]]
| [[Phra Khanong BTS station|Phra Khanong]]
| พระโขนง
| พระโขนง
|[[File:Phra Khanong Station.jpg|frameless]]
|style="text-align: center;" |Side
| style="text-align: center;" |Side
| ''Proposed connecting station to {{rint|bangkok|Grey}}'' <small>''(south section)''</small>
| -
| align="left" |'''Connecting station''' to {{rint|bangkok|Grey}} <small>''(south section; future)''</small>
|
|-
|-
|style="text-align: center;" |●
|style="text-align: center;" |●
|style="text-align: center;" |●
|style="text-align: center;" |●
| [[File:BTS E9.svg|25px]]
| [[File:BTS E9.svg|25px]]
| [[On Nut BTS station|On Nut]]
| [[On Nut BTS station|On Nut]]
| อ่อนนุช
| อ่อนนุช
|[[File:BTS On Nut Station 20151107.jpg|frameless]]
|style="text-align: center;" |Side
| style="text-align: center;" |Side
| -
|
|
|
|-
|-
|style="text-align: center;" |●
|style="text-align: center;" |●
|style="text-align: center;" |●
|style="text-align: center;" |●
| [[File:BTS E10.svg|25px]]
| [[File:BTS E10.svg|25px]]
| [[Bang Chak BTS station|Bang Chak]]
| [[Bang Chak BTS station|Bang Chak]]
| บางจาก
| บางจาก
|[[File:E10 Bang Chak Station.jpg|frameless]]
| rowspan="5" |12 August 2011
| rowspan="5" |{{Start date and age|2011|08|12|df=y}}
|style="text-align: center;" |Side
| style="text-align: center;" |Side
| -
|
|
|
| rowspan="2" | [[Phra Khanong District|Phra Khanong]]
|-
|-
|style="text-align: center;" |●
|style="text-align: center;" |●
|style="text-align: center;" |●
|style="text-align: center;" |●
| [[File:BTS E11.svg|25px]]
| [[File:BTS E11.svg|25px]]
| [[Punnawithi BTS station|Punnawithi]]
| [[Punnawithi BTS station|Punnawithi]]
| ปุณณวิถี
| ปุณณวิถี
|[[File:E11 Punnawithi Station.jpg|frameless]]
|style="text-align: center;" |Side
| style="text-align: center;" |Side
| -
|
|
|
|-
|-
|style="text-align: center;" |●
|style="text-align: center;" |●
|style="text-align: center;" |●
|style="text-align: center;" |●
| [[File:BTS E12.svg|25px]]
| [[File:BTS E12.svg|25px]]
| [[Udom Suk BTS station|Udom Suk]]
| [[Udom Suk BTS station|Udom Suk]]
| อุดมสุข
| อุดมสุข
|[[File:E12 Udom Suk Station.jpg|frameless]]
|style="text-align: center;" |Side
| style="text-align: center;" |Side
| -
|
|
|
| rowspan="3" | [[Bang Na District|Bang Na]]
|-
|-
|style="text-align: center;" |●
|style="text-align: center;" |●
|style="text-align: center;" |●
|style="text-align: center;" |●
| [[File:BTS E13.svg|25px]]
| [[File:BTS E13.svg|25px]]
| [[Bang Na BTS station|Bang Na]]
| [[Bang Na BTS station|Bang Na]]
| บางนา
| บางนา
|[[File:E13 Bang Na Station.jpg|frameless]]
|style="text-align: center;" |Side
| style="text-align: center;" |Side
|''Proposed connecting station to [[Bang Na–Suvarnabhumi light rail|Bang Na-Suvarnabhumi LRT]].''
| -
| align="left" |'''Connecting station''' ''to'' [[Bang Na–Suvarnabhumi light rail|Bang Na-Suvarnabhumi LRT]] ''<small>(future)</small>''
|
|-
|-
|style="text-align: center;" |<b>/</b>
|style="text-align: center;" |●
|style="text-align: center;" |●
|style="text-align: center;" |●
| [[File:BTS E14.svg|25px]]
| [[File:BTS E14.svg|25px]]
| [[Bearing BTS station|Bearing]]<br />({{RTGS|''Baering''}})
| [[Bearing BTS station|Bearing]]
| แบริ่ง
| แบริ่ง
|[[File:Bearing Station name sign.jpg|frameless]]
|style="text-align: center;" |Side
| style="text-align: center;" |Side
| -
|
|
|
|-
|-
|style="text-align: center;" |<b>/</b>
|style="text-align: center;" |●
|style="text-align: center;" |●
|style="text-align: center;" |●
| [[File:BTS E15.svg|25px]]
| [[File:BTS E15.svg|25px]]
| [[Samrong BTS station|Samrong]]
| [[Samrong BTS station|Samrong]]
| สำโรง
| สำโรง
|[[File:Samrong BTS station in March 2022.jpg|frameless]]
|3 April 2017
|{{Start date and age|2017|04|03|df=y}}
|style="text-align: center;" |Island
| style="text-align: center;" |Island
| '''Connecting station''' to {{Rint|bangkok|Yellow}}
| -
| rowspan="9" |[[Mueang Samut Prakan District|Mueang Samut Prakan]]
| align="left" |'''Interchange station''' to {{Rint|bangkok|Yellow}} ''via transfer gates''
| rowspan="9" |[[Samut Prakan Province|Samut Prakan]]
|
|-
|-
|style="text-align: center;" |●
| style="background:lightgrey;"rowspan="8" |
|style="text-align: center;" |●
| rowspan="8" style="background:lightgrey;" |
| [[File:BTS E16.svg|25px]]
| [[File:BTS E16.svg|25px]]
| [[Pu Chao BTS station|Pu Chao]]
| [[Pu Chao BTS station|Pu Chao]]
| ปู่เจ้า
| ปู่เจ้า
|[[File:E16 Pu Chao Station.jpg|frameless]]
| rowspan="8" |6 December 2018
| rowspan="8" |{{Start date and age|2018|12|06|df=y}}
|style="text-align: center;" |Side
| style="text-align: center;" |Side
| -
|
|
|
|-
|-
|style="text-align: center;" |●
|style="text-align: center;" |●
| [[File:BTS E17.svg|25px]]
| [[File:BTS E17.svg|25px]]
| [[Chang Erawan BTS station|Chang Erawan]]
| [[Chang Erawan BTS station|Chang Erawan]]
| ช้างเอราวัณ
| ช้างเอราวัณ
|[[File:E17 Chang Erawan Station.jpg|frameless]]
|style="text-align: center;" |Side
| style="text-align: center;" |Side
| -
|
|
|
|-
|-
|style="text-align: center;" |●
|style="text-align: center;" |●
| [[File:BTS E18.svg|25px]]
| [[File:BTS E18.svg|25px]]
| [[Royal Thai Naval Academy BTS station|Royal Thai Naval Academy]]<br />({{RTGS|''Rongrian Nairuea''}})
| [[Royal Thai Naval Academy BTS station|Royal Thai Naval Academy]]
| โรงเรียนนายเรือ
| โรงเรียนนายเรือ
|[[File:E18 Royal Thai Naval Academy Station.jpg|frameless]]
|style="text-align: center;" |Side
| style="text-align: center;" |Side
| -
|
|
|
|-
|-
|style="text-align: center;" |●
|style="text-align: center;" |●
| [[File:BTS E19.svg|25px]]
| [[File:BTS E19.svg|25px]]
| [[Pak Nam BTS station|Pak Nam]]
| [[Pak Nam BTS station|Pak Nam]]
| ปากน้ำ
| ปากน้ำ
|[[File:Pak Nam Station 20230306-3.jpg|frameless]]
|style="text-align: center;" |Side
| style="text-align: center;" |Side
| -
|
|
|
|-
|-
|style="text-align: center;" |●
|style="text-align: center;" |●
| [[File:BTS E20.svg|25px]]
| [[File:BTS E20.svg|25px]]
| [[Srinagarindra BTS station|Srinagarindra]]<br />({{RTGS|''Si Nakharin''}})
| [[Srinagarindra BTS station|Srinagarindra]]
| ศรีนครินทร์
| ศรีนครินทร์
|[[File:E20 Srinagarindra Station.jpg|frameless]]
|style="text-align: center;" |Side
| style="text-align: center;" |Side
| -
|
|
|
|-
|-
|style="text-align: center;" |●
|style="text-align: center;" |●
| [[File:BTS E21.svg|25px]]
| [[File:BTS E21.svg|25px]]
| [[Phraek Sa BTS station|Phraek Sa]]<br />({{RTGS|''Phraekkasa''}})
| [[Phraek Sa BTS station|Phraek Sa]]
| แพรกษา
| แพรกษา
|[[File:Phraek Sa Station 20230930-1.jpg|frameless]]
|style="text-align: center;" |Side
| style="text-align: center;" |Side
| -
|
|
|
|-
|-
|style="text-align: center;" |●
|style="text-align: center;" |●
| [[File:BTS E22.svg|25px]]
| [[File:BTS E22.svg|25px]]
| [[Sai Luat BTS station|Sai Luat]]
| [[Sai Luat BTS station|Sai Luat]]
| สายลวด
| สายลวด
|[[File:Sai Luat Station 20230930-1.jpg|frameless]]
|style="text-align: center;" |Side
| style="text-align: center;" |Side
| -
|
|
|
|-
|-
|style="text-align: center;" |●
|style="text-align: center;" |●
| [[File:BTS E23.svg|25px]]
| [[File:BTS E23.svg|25px]]
| [[Kheha BTS station|Kheha]]
| [[Kheha BTS station|Kheha]]
| เคหะฯ
| เคหะฯ
|[[File:Kheha BTS Station.jpg|frameless]]
|style="text-align: center;" |Side
| style="text-align: center;" |Side
|√
|
|
|
|}
|}


== Services ==
== Rolling stock ==
{{multiple image
BTS operates services throughout the line from Khu Khot to Kheha at all times. At peak hours between 07.00-09.00 and 16.00-20.00, some "short-run" services run terminate at Mo Chit and Kasetsart University northbound, and at Samrong, eastbound. Trains run generally at three to six-minute intervals. The last eastbound trains from Khu Khot terminate at Kheha, Samrong or Ha Yaek Lat Phrao. The last northbound trains from Kheha terminate at Khu Khot, Mo Chit, or Samrong.
| align = center

| direction = horizontal
A few off-peak eastbound trains run a through service on the Silom Line to Bang Wa, in order to increase the line capacity at peak hours. At night, these trains will run back northbound and head to depot.<ref>{{Cite web|title=เวลาการให้บริการ|url=https://www.bts.co.th/service/timetable.html|website=BTS Skytrain}}</ref> Some late northbound trains on the Silom Line switch to the Sukhumvit Line at Siam to reach the depot at Mo Chit.
| header = Rolling stocks of Sukhumvit Line

| header_align = center
==Extensions and current construction==
| image1 = Bangkok Skytrain BTS 4.jpg
[[File:Sukhumvit Line East Extension Station Sign.jpg|thumb|Station sign at [[Thong Lo BTS station]] shows the extension beyond Samrong which opened in 2018.]]
| caption1 = {{center|'''EMU-A1''' approaching [[Victory Monument BTS Station|Victory Monument station]]}}

| width1 = {{#expr: (150 * 1600/ 1200) round 0}}
'''Summary of BTS Sukhumvit extensions'''
| image2 = Bangkok Skytrain BTS 3.jpg
* '''12 August 2011:''' On Nut (E09) &ndash; Bearing (E14)
| caption2 = {{center|'''EMU-A2''' heading towards [[Sanam Pao BTS Station|Sanam Pao station]]}}
* '''3 April 2017:''' Bearing (E14) &ndash; Samrong (E15)
| width2 = {{#expr: (151.5 * 1600/ 1200) round 0}}
* '''6 December 2018:''' Samrong (E15) &ndash; Kheha (E23)
| image3 = Bangkok BTS 03.jpg
* '''9 August 2019:''' Mo Chit (N8) &ndash; Ha Yaek Lat Phrao (N9)
| width3 = {{#expr: (150 * 1600/ 1200) round 0}}
* '''4 December 2019:''' Ha Yaek Lat Phrao (N9) &ndash; Kasetsart University (N13)
| caption3 = {{center|'''EMU-B1/B2''' approaching [[Ha Yaek Lat Phrao BTS Station|Ha Yaek Lat Phrao station]]}}
* '''5 June 2020:''' Kasetsart University (N13) &ndash; Wat Phra Sri Mahathat (N17)
| image4 = (THA-Bangkok) BTS 880-980 @ Ekkamai 2024-02-13.jpg
* '''16 December 2020''' Wat Phra Sri Mahathat (N17) &ndash; Khu Khot (N24).
| width4 = {{#expr: (178 * 1600/ 1200) round 0}}

| caption4 = {{center|'''EMU-B3''' at [[Ekkamai BTS Station|Ekkamai station]]}}
===East===
}}
'''1st extension to Bearing'''
Construction started in August 2006 on a four billion baht, {{Cvt|5.25|km}} extension from On Nut (E9) to Bearing.<ref>Groundbreaking starts on new BTS extension, ''Daily News'', 15 August 2006</ref> The extension was funded by the BMA.<ref>BTS extension budget cut, ''Bangkok Post'', 15 December 2006</ref> The original scheduled opening date was mid-2009. However, a delay in tendering of the contract for the electrical and signalling works resulted in a two-year delay.


== Operation ==
The extension did not open until over two years later, on 12 August 2011. The delay in opening prompted the BMA to offer free travel for this extension until the end of 2011 as compensation. An additional flat fee is charged additionally to the distance-based fare of the rest of the BTS network.
The Sukhumvit Line operates from 06:00 to 24:00 every day. During rush hour, there are two main service patterns:


* Full Line operation from Khu Khot to Kheha
'''2nd extension to Kheha''' Construction started in April 2012 on a {{Cvt|12.6|km}}, nine station extension from [[Bearing BTS station|Bearing station]] to [[Kheha BTS station|Kheha station]]. The extension was funded by the [[Mass Rapid Transit Authority of Thailand|MRTA]] as it is outside [[Bangkok Metropolitan Administration|BMA]] city limits, Bangkok Province. Construction was contracted to take 1,350 days and the extension was originally scheduled to open by early 2017. In April 2013, the MRTA awarded Ch Karnchang the contract for track laying and electrical systems.<ref>"Ch Karnchang gets Phase 2 of Bearing-Samut Prakan route" ''The Nation'', 13 April 2013</ref>
* Short-run train from Mo Chit to Samrong


Apart from these two service patterns, some trains might terminate at [[Kasetsart University BTS station|Kasetsart University]] and [[Ha Yaek Lat Phrao BTS station|Ha Yaek Lat Phrao]] or operate as through-running trains to/from [[Bang Wa station]] on the [[Silom Line]].
In June 2014, civil works were stated to be 28.3 percent complete. In August 2016, the BMA agreed to take over the operation of the extension from MRTA. Delays over the agreement of how much the BMA should pay MRTA caused a delay in the commencement of test runs on the extension. Track works were 98% completed by November 2016. The total cost of the extension was estimated at 21.4 billion baht.<ref>{{Cite news|url=http://www.bangkokpost.com/news/general/1140841/bma-to-postpone-test-run-of-bearing-samrong-skytrain|title=BMA to postpone test run of Bearing-Samrong skytrain|newspaper=Bangkok Post|access-date=2016-11-22}}</ref> In January 2017, it was announced that the opening of the extension could be further delayed to 2018-2019 due to budgetary concerns and ongoing disputes between the MRTA and BMA.<ref>{{Cite news|url=http://www.khaosodenglish.com/news/transpo/2017/01/31/green-line-going-nowhere-least-two-years/|title=Green Line Going Nowhere for at Least Two Years|author=Sasiwan Mokkhasen|date=2017-01-31|newspaper=Khaosod English|access-date=2017-02-25|language=en-US}}</ref>


=== Headways ===
The first {{Cvt|1.2|km}} section of the extension to Samrong station (E15) opened on 3 April 2017.<ref>{{Cite news|url=http://www.khaosodenglish.com/news/transpo/2017/02/24/first-station-stalled-bts-green-line-open-april-1/|title=First Station of Stalled BTS Green Line to Open April 1|author=Asaree Thaitrakulpanich|date=2017-02-24|newspaper=Khaosod English|access-date=2017-02-25|language=en-US}}</ref> The full extension to Kheha opened on 6 December 2018.<ref>{{cite news |title=MRTA pushes to fast-track launch of South Green Line|url=https://www.bangkokpost.com/archive/mrta-pushes-to-fast-track-launch-of-south-green-line/1369887 |newspaper=Bangkok Post |date=1 December 2017 }}</ref>
{| class="wikitable" style="margin:auto;font-align:center;text-align:center;font-size:80%;&quot;"

! style="background:#{{rcr|BTS Skytrain|Sukhumvit}}; color:white;" colspan="3" |'''Sukhumvit Line headway'''<ref>{{Cite web |title=เวลาและความถี่การเดินรถ |url=https://www.bts.co.th/service/timetable.html |access-date=2024-11-16 |website=www.bts.co.th}}</ref>
===North===
|-
[[File:Sukhumvit Line North Extension Map.jpg|thumb|Map of North Extension at Thong Lo station. Station N9 was opened on 9 August 2019 and stations N10 to N24 opened in 2020.]]
! style="background:#{{rcr|BTS Skytrain|Sukhumvit}}; color:white;" |Time
'''1st and 2nd extension'''
! style="background:#{{rcr|BTS Skytrain|Sukhumvit}}; color:white;" |Section
*1) Mo Chit station to Saphan Mai: 11.4&nbsp;km, 12 stations (N9–N20)
! style="background:#{{rcr|BTS Skytrain|Sukhumvit}}; color:white;" |Headway (Minutes:Seconds)
*2) Saphan Mai to Khu Khot: 7.5&nbsp;km, four stations (N21-N24)
|-

! colspan="3" |Monday - Friday
An 11.4&nbsp;km, 11 station northern extension from [[Mo Chit BTS station|Mo Chit station]] to [[Saphan Mai]] in [[Don Mueang District]] had been planned since the Sukhumvit Line opened. Originally, this extension was scheduled to be completed by 2008. However, due to a combination of changes in government, a prolonged environmental study, and problems with locating a suitable train depot the extension was continually delayed. A further {{Cvt|16.5|km}}, nine station extension from Saphan Mai to Khu Khot was also planned once the extension to Saphan Mai had been completed.

After multiple delays, in mid-2013 a decision was made to tender extensions (1) and (2) at the same time, by the end of 2013. However, the dissolution of parliament in November 2013 delayed this yet again. A tender was finally released in January 2014<ref>http://www.mrta.co.th/sysRegister/register131217/proc17122556.pdf {{Bare URL PDF|date=March 2022}}</ref> with an April deadline before being delayed until late May 2014 due to concerns from bidders.<ref>http://www.prachachat.net/news_detail.php?newsid=1401076541 "รฟม.ปรับทีโออาร์หมอชิต-คูคต กลางปี59 เปิดให้บริการสายสีม่วง" ''Prachachat News'', 26 May 2014</ref> A military coup in late-May 2014 suspended the bidding process whilst the military administration reviewed all major projects. In late June, the military administration affirmed that the tender would proceed before the end of 2014. In August 2014, the MRTA announced that the new tender deadline was 30 September 2014.<ref>{{cite news | url=http://www.prachachat.net/news_detail.php?newsid=1408439328 | title=ข่าวรอบวัน | newspaper=ประชาชาติธุรกิจ }}</ref> Five bidders qualified and the successful bids were announced in December 2014.<ref>{{Cite web |url=http://www.matichon.co.th/news_detail.php?newsid=1412581507 |title=5กลุ่มบริษัทผ่านคุณสมบัติสร้างรถไฟสีเขียว คาดหาผู้รับเหมาได้ไม่เกินต้นปี58 : มติชนออนไลน์ |access-date=2014-10-08 |archive-date=2016-03-04 |archive-url=https://web.archive.org/web/20160304031709/http://www.matichon.co.th/news_detail.php?newsid=1412581507 |url-status=dead }}</ref> The tender specified a construction period of 1,350 days.

On 3 April 2015, MRTA signed four contracts for this extension:<ref>{{cite web | url=http://www.ryt9.com/s/iq03/2130477 | title=รฟม.เซ็นสัญญารถไฟฟ้าสายสีเขียวเหนือ เริ่มสร้างมิ.ย 58 คาดเปิดใช้ต้นปี }}</ref>
* Contract 1: Civil works of 11.4&nbsp;km from Mo Chit to Saphan Mai, will be constructed by [[Italian-Thai Development]] (15,269 million baht)
* Contract 2: Civil works of 7.5&nbsp;km from Saphan Mai to Khu Khot, will be constructed by UN-SH-CH joint venture (6,657 million baht)
* Contract 3: Civil works of Depot and Park and Ride building, will be constructed by STEC-AS joint venture (4,019 million baht)
* Contract 4: Tracklaying and system design, will be constructed by STEC-AS joint venture (2,841 million baht)

The MRTA, contactors and Thai Traffic Police met on 2 September 2015 and confirmed construction would begin on 8 September 2015. A flyover at Kasetsart was demolished, which commenced on 12 September 2015.<ref>{{cite web | url=http://www.manager.co.th/iBizchannel/ViewNews.aspx?NewsID=9580000099688 | title=ผู้จัดการออนไลน์ รวดเร็ว สด ทุกเหตุการณ์ }}</ref>

At 31 December 2017, the progress of civil works construction was at 53.31% according to the MRTA.<ref>https://www.mrta.co.th/th/news/information/ความก-าวหน-าการก-อสร-างรถไฟฟ-า-ณ-31-ธ-นวาคม-2560/. ''MRTA Press'', 16 January 2018</ref> As of the end of April 2018, the MRTA stated that civil works progress had advanced to 63.27%.<ref>https://www.mrta.co.th/th/news/information/ความก-าวหน-าการก-อสร-างรถไฟฟ-า-ณ-30-เมษายน-2561/. ''MRTA Press'', 30 April 2018</ref> As of 30 September, overall construction had progressed to 78.79%.<ref>{{cite web | url-access=limited |archive-url = https://ghostarchive.org/iarchive/facebook/1409174012632662/2109998672550189 |archive-date = 2022-04-30| url = https://www.facebook.com/MRTA.PR/photos/a.1433440196872710/2109998672550189/. |title = การรถไฟฟ้าขนส่งมวลชนแห่งประเทศไทย on Facebook |website=[[Facebook]]}}{{cbignore}}''MRTA Press''{{User-generated source|certain=yes|date=March 2022}}</ref> By the end of March 2019, civil construction had nearly been completed having progressed to 99.42%.<ref>https://www.mrta.co.th/th/news/information/ความก-าวหน-าการก-อสร-างรถไฟฟ-า-ณ-30-เมษายน-2561/. ''MRTA Press'', 30 April 2018</ref>

Testing of the final 9.8&nbsp;km, 7 station section from Wat Phra Sri Mahathat (N17) to Khu Khot (N24) began on 5 October.<ref>{{cite news|title=BTS tests Green Line trains at 7 new stations before public opening at year-end|url=https://www.https://www.nationthailand.com/news/30395767|newspaper=The Nation|date=7 October 2020|access-date=17 February 2022|archive-date=19 August 2013|archive-url=https://web.archive.org/web/20130819141428/http://https/|url-status=dead}}</ref> The final section was officially opened on 16 December 2020 by the Prime Minister.<ref>{{cite news |title=นับถอยหลัง 4 ธ.ค. 63 รถไฟฟ้า BTS สายสีเขียว เปิดทุกสถานี เชื่อม 3 จังหวัด|url=https://www.tnnthailand.com/content/62397 |newspaper=TNN Thailand |date=17 November 2020}}</ref>

'''Opening dates'''

# The first section to Ha Yaek Lat Phrao station (N9) opened on 9 August 2019.
# The next 4 stations from a Yaek Lat Phrao station (N9) to Kasetsart University (N13) opened on 4 December 2019.
# The next 4 stations from Kasetsart University (N13) to Wat Phra Sri Mahathat (N17) opened on 5 June 2020.
# The remaining section of 9.8&nbsp;km and 7 stations from Wat Phra Sri Mahathat (N17) to Khu Khot (N24) opened on 16 December 2020.

==Future extension plans==
'''East:'''
* A further 7&nbsp;km, four station extension from '''Kheha station''' to '''Bang Pu station''' is planned.
{| width=70% class="wikitable"
! style="background:#{{rcr|BTS Skytrain|Sukhumvit}}; color:white;" rowspan="2" span ;|Code
! style="background:#{{rcr|BTS Skytrain|Sukhumvit}}; color:white;" colspan="2" span ;|Station Name
! style="background:#{{rcr|BTS Skytrain|Sukhumvit}}; color:white;" rowspan="2" span ;|Transfers
! style="background:#{{rcr|BTS Skytrain|Sukhumvit}}; color:white;" colspan="2" span ;|Location
|-
|-
|'''06:00 - 07:00'''
! style="background:#{{rcr|BTS Skytrain|Sukhumvit}}; color:white;" rowspan="1" span ;|English
|Full Line
! style="background:#{{rcr|BTS Skytrain|Sukhumvit}}; color:white;" rowspan="1" span ;|Thai
|05:00
! style="background:#{{rcr|BTS Skytrain|Sukhumvit}}; color:white;" colspan="1" span ;|District
|-
! style="background:#{{rcr|BTS Skytrain|Sukhumvit}}; color:white;" colspan="1" span ;|Province
| rowspan="2" |'''07:00 - 09:00'''
|- bgcolor="lightgrey"
|[[File:BTS_N8.svg|20x20px]] Mo Chit - [[File:BTS_E15.svg|20x20px]] Samrong
| [[File:BTS E24 opaque.png|25px]]
|02:40
| Sawangkhaniwat
|-
| สวางคนิวาส
| rowspan="4" |Full Line
|
|05:20
| rowspan="4" | [[Mueang Samut Prakan District|Mueang Samut Prakan]]
|-
| rowspan="4" | [[Samut Prakan Province|Samut Prakan]]
|'''09:00 - 09:30'''
|- bgcolor="lightgrey"
|03:35
| [[File:BTS E25 opaque.png|25px]]
|-
| Mueang Boran
|'''09:30 - 16:00'''
| เมืองโบราณ
|06:30
|
|-
|- bgcolor="lightgrey"
|'''16:00 - 16:30'''
| [[File:BTS E26 opaque.png|25px]]
|04:25
| Si Chan Pradit
|-
| ศรีจันทร์ประดิษฐ์
| rowspan="2" |'''16:30 - 20:00'''
|
|[[File:BTS_N8.svg|20x20px]] Mo Chit - [[File:BTS_E15.svg|20x20px]] Samrong
|- bgcolor="lightgrey"
|02:40
| [[File:BTS E27 opaque.png|25px]]
|-
| Bang Pu
| rowspan="4" |Full Line
| บางปู
|05:20
|
|-
|'''20:00 - 21:00'''
|04:25
|-
|'''21:00 - 22:00'''
|06:00
|-
|'''22:00 - 24:00'''
|08:00
|-
! colspan="3" |Saturday to Sunday and Public Holiday
|-
|'''06:00 - 08:00'''
| rowspan="2" |Full Line
|07:00
|-
|'''08:00 - 11:00'''
|05:55
|-
| rowspan="2" |'''11:00 - 21:00'''
|[[File:BTS_N8.svg|20x20px]] Mo Chit - [[File:BTS_E15.svg|20x20px]] Samrong
|04:30
|-
| rowspan="3" |Full Line
|06:00
|-
|'''21:00 - 22:00'''
|07:00
|-
|'''22:00 - 24:00'''
|08:00
|}
|}


== Route map ==
'''North:'''
{{Wide image|Sukhumvit Line and Silom Line Map.svg|1600px}}
* A further 9&nbsp;km, four station extension east along Lam Lukka Road from '''Khu Khot station''' to '''Wongwaen-Lam Luk Ka station''' is planned.

{| width=70% class="wikitable"
== Gallery ==
! style="background:#{{rcr|BTS Skytrain|Sukhumvit}}; color:white;" rowspan="2" span ;|Code
<gallery widths="270" heights="270" perrow="5">
! style="background:#{{rcr|BTS Skytrain|Sukhumvit}}; color:white;" colspan="2" span ;|Station Name
File:BTS Constitution protectors monument - the monument underpass.jpg|Sukhumvit Line viaduct at Lak Si roundabout.
! style="background:#{{rcr|BTS Skytrain|Sukhumvit}}; color:white;" rowspan="2" span ;|Transfers
File:ตึกช้าง และ รถไฟฟ้าเดินทางออกจากสถานีรัชโยธิน (Elephant Building and BTS Skytrain).jpg|'''EMU-A2''' with [[Elephant Building]] behind at [[Ratchayothin BTS station|Ratchayothin station]].
! style="background:#{{rcr|BTS Skytrain|Sukhumvit}}; color:white;" colspan="2" span ;|Location
File:Chatuchak Park,Phahonyithin Road,Chomphon, bangkok - panoramio.jpg|Mo Chit Depot in 2013.
|-
File:BTS Skytrain at Victory Monument.jpg|'''EMU-B3''' at [[Victory Monument (Bangkok)|Victory Monument]].
! style="background:#{{rcr|BTS Skytrain|Sukhumvit}}; color:white;" rowspan="1" span ;|English
File:BTS EMU-B and EMU-B3.jpg|'''EMU-B1/B2''' (left) and '''EMU-B3''' at [[Victory Monument BTS station|Victory Monument station]].
! style="background:#{{rcr|BTS Skytrain|Sukhumvit}}; color:white;" rowspan="1" span ;|Thai
File:Pathumwan rd and Siam area.jpg|View of [[Pathum Wan district]].
! style="background:#{{rcr|BTS Skytrain|Sukhumvit}}; color:white;" colspan="1" span ;|District
File:Sukhumvit Line viaduct from Pathum Wan Skywalk.jpg|Sukhumvit Line viaduct from Pathum Wan Skywalk.
! style="background:#{{rcr|BTS Skytrain|Sukhumvit}}; color:white;" colspan="1" span ;|Province
File:BTS Siam Station 5.jpg|The upper-level platform at [[Siam BTS station|Siam station]] in 2007, before the installation of platform screen doors
|- bgcolor="lightgrey"
File:View from Chit Lom station.jpg|View from [[Chit Lom BTS station|Chit Lom station]].
| [[File:BTS N28 opaque.png|25px]]
File:Bangkok Skytrain 01.jpg|3-cars '''EMU-A1''' from 2007
| Outer Ring Road-Lam Luk Ka
File:Phloen Chit Road.jpg|[[Phloen Chit Road]] with Sukhumvit Line viaduct above.
| วงแหวนลำลูกกา
File:Sukhumwit Road with BTS Asok and Asok Montri Rd.jpg|Sukhumvit Line at Asok Junction.
|
File:Emsphere 21-12-2023 (1).jpg|[[EmSphere]] from [[Phrom Phong BTS station|Phrom Phong station]].
| rowspan="5" | [[Lam Luk Ka District|Lam Luk Ka]]
File:ไบเทค บางนา BITEC BANGNA (3).jpg|'''EMU-A1''' at [[Bang Na BTS station|Bang Na station]] with [[Bangkok International Trade and Exhibition Centre|BITEC]] behind.
| rowspan="5" | [[Pathum Thani Province|Pathum Thani]]
File:Samrong Station,Samutprakan (4).jpg|'''EMU-A2''' departing [[Samrong station]].
|- bgcolor="lightgrey"
File:Samut Prakarn.jpg|Sukhumvit Line viaduct runs through [[Samut Prakan province]].
| [[File:BTS N27 opaque.png|25px]]
</gallery>
| Khlong Ha
| คลองห้า
|
|- bgcolor="lightgrey"
| [[File:BTS N26 opaque.png|25px]]
| Khlong Si
| คลองสี่
|
|- bgcolor="lightgrey"
| [[File:BTS N25 opaque.png|25px]]
| Khlong Sam
| คลองสาม
|
|}


==See also==
==See also==

Latest revision as of 09:26, 18 November 2024

BTS Sukhumvit Line
สายสุขุมวิท
Overview
OwnerBangkok Metropolitan Administration
LocaleBangkok, Samut Prakan, and Pathum Thani
Termini
StationsTotal : 57 stations
47 (operational)
9 (planned)
1 (provisional)
Color on map    Light Green
Service
TypeRapid transit
SystemBTS Skytrain
Operator(s)Bangkok Mass Transit System Public Company Limited
Depot(s)Mo Chit Depot (shared with  BTS )
Khu Khot Depot (shared with  BTS )
Kheha Depot
Rolling stockSiemens Modular Metro
EMU-A1: 35 four-car trains
Siemens Bozankaya
EMU-A2: 22 four-car trains
CNR Changchun Railway Vehicles
EMU-B1: 12 four-car trains
CNR Changchun Railway Vehicles
EMU-B2: 5 four-car trains
CRRC Changchun Railway Vehicles
EMU-B3: 24 four-car trains
Daily ridership926,294 ( BTS  and  BTS )
30 August 2024[1]
History
Opened5 December 1999; 24 years ago (1999-12-05)
Last extension16 December 2020; 3 years ago (2020-12-16)
Technical
Line lengthTotal :69.07 km (42.92 mi)
51.17 km (31.80 mi) (operational)
17.9 km (11.1 mi) (planned)
CharacterFully elevated
Track gauge1,435 mm (4 ft 8+12 in) standard gauge
Electrification750 V DC third rail
Operating speed80 km/h (50 mph)
SignallingFormer: Siemens Trainguard LZB700M fixed block ATC under ATO GoA 2 (STO)
Current: Bombardier CITYFLO 450 moving block CBTC ATC under ATO GoA 2 (STO), with subsystems of ATP, ATS and CBI[2][3]
Route map

Planned extension to Outer Ring Road-Lam Luk Ka
Khu Khot
Khu Khot depot
Yaek Kor Por Aor
Royal Thai Air Force Museum
Bhumibol Adulyadej Hospital
Saphan Mai
Sai Yud
Phahon Yothin 59
Wat Phra Sri Mahathat
 MRT 
11th Infantry Regiment
Bang Bua
Royal Forest Department
Kasetsart University
Sena Nikhom
Ratchayothin
Phahon Yothin 24
Ha Yaek Lat Phrao
 MRT 
Blue Line to Lak Song
Mo Chit depot
Mo Chit
 MRT 
Saphan Khwai
Sena Ruam
(future)
Ari
Sanam Pao
Si Rat Expressway
Victory Monument
Phaya Thai
 ARL 
Airport Rail Link to Suvarnabhumi
SRT Eastern Line
to Bangkok │ to Chachoengsao
Ratchathewi
Silom Line to National Stadium
Siam
 BTS 
Silom Line to Bang Wa
Chit Lom
Phloen Chit
Chaloem Maha Nakhon Expressway
Nana
Asok
Blue Line to Tha Phra (via Bang Sue)
Phrom Phong
Thong Lo
Ekkamai
Phra Khanong
Chalong Rat Expressway
On Nut
Bang Chak
Punnawithi
Udom Suk
Chaloem Maha Nakhon Expressway
Third stage Expressway System
Bang Na
Bearing
Samrong
 MRT 
Pu Chao
Kanchanapisek Expressway
Chang Erawan
Royal Thai Naval Academy
Pak Nam
Srinagarindra
Phraek Sa
Sai Luat
Kheha
Samut Prakan depot
Planned extension to Bang Pu

The Elevated Train in Commemoration of HM the King's 6th Cycle Birthday 1st line, also known as Sukhumvit Line, is one of the rapid transit lines of the BTS Skytrain System in Bangkok, Thailand.[4] The line runs from Siam Station, where it interchanges with the Silom Line, and continues both northwards along Phaya Thai and Phahon Yothin Roads to Khu Khot in Lam Luk Ka District, Pathum Thani, and eastwards along Rama I, Phloen Chit and Sukhumvit Roads, through Bang Na District to Kheha Station in Samut Prakan.

The line was first opened on 5 December 1999, along with the Silom Line. Both lines are operated by the Bangkok Mass Transit System Public Company Limited under a 30-year concession from the Bangkok Metropolitan Administration. When it opened, the line ran from Mo Chit to On Nut covering a total distance of 16.7 km (10.4 mi) with 17 stations. As of October 2024, Sukhumvit Line is one of the main arteries of the Bangkok Mass Rapid Transit System with 900,000 daily passengers per day (combined with the Silom Line). The line rapidly expanded from 2011 until 2021, tripling its distance through three extension projects and reaching a total length of 51.17 km (31.80 mi) with 47 stations.

History

[edit]

Original plan

[edit]

The Sukhumvit Line's initial proposal was for 12.8 km (8.0 mi) route running from N4 station to E9 station with the depot located at Lumphini Park near the Silom Line. However, this location for the depot faced backlash from the public opinion, which argued that it violated King Rama VI's intention in donating his land to establish Lumphini Park for the public. Additionally, there were protests demanding that the construction of both Skytrain lines be built underground instead of being fully elevated. Therefore, several alternative locations for the depot were considered, such as a vacant land plot in Soi Rangnam owned by the Crowned Property Bureau or the Phra Khanong pumping station in Sukhumvit 50. Ultimately, the Bangkok Metropolitan Administration decided to relocate the depot to the former site of the Northern Bus Terminal (commonly known as the Mo Chit Bus Terminal). With the decision made, the Sukhumvit Line route was extended from N4 station to N8 station. Several changes were made during the construction, as follows:[5]

  • N3, N4, E8, and E9 stations were changed from an island platform to side platforms.
  • The fully operational year was pushed from the end of 1996 to the end of 1999.
  • Station designs were drastically changed from the EIA reports.
  • CEN station was moved from the east side of Chaloem Phao junction to the west side.
  • E1 station was moved from the east side of the Chit Lom junction to the west side, in front of Mater Dei School, with the two entrances in front of the school being canceled due to protests from school staffs and students concerned about privacy, landscape, and air pollution issues.
  • E2 station was originally located between Sukhumvit 2 and Soi Nana but was later moved to the west side of the Chaloem Maha Nakhon Expressway.
  • E4 station was moved from the east side of the Asok junction to the west side.

Extensions

[edit]

Bearing Extension

[edit]

Construction started in August 2006 on a four-billion baht, 5.25 km (3.26 mi) extension from On Nut to Bearing which included 5 new stations[6] The extension was funded by the BMA.[7] The original scheduled opening date was mid-2009. However, a delay in tendering the contract for the electrical and signaling works resulted in a two-year delay.

The extension did not open until over two years later, on 12 August 2011. The delay in opening prompted the BMA to offer free travel on this extension until the end of 2011 as compensation.

Samut Prakan Extension

[edit]

Construction started in April 2012 on a 12.6 km (7.8 mi), nine station extension from Bearing station to Kheha station. The extension was funded by the MRTA as it is outside BMA city limits, Bangkok Province. Construction was contracted to take 1,350 days and the extension was originally scheduled to open by early 2017. In April 2013, the MRTA awarded Ch Karnchang the contract for track laying and electrical systems.[8]

In June 2014, civil works were stated to be 28.3 percent complete. In August 2016, the BMA agreed to take over the operation of the extension from MRTA. Delays over the agreement of how much the BMA should pay MRTA caused a delay in the commencement of test runs on the extension. Track works were 98% completed by November 2016. The total cost of the extension was estimated at 21.4 billion baht.[9] In January 2017, it was announced that the opening of the extension could be further delayed to 2018-2019 due to budgetary concerns and ongoing disputes between the MRTA and BMA.[10]

The first 1.2 km (0.75 mi) section of the extension to Samrong station opened on 3 April 2017.[11] The full extension to Kheha opened on 6 December 2018.[12]

Khu Khot Extension

[edit]

An 11.4 km, 11 station northern extension from Mo Chit station to Saphan Mai in Don Mueang District had been planned since the Sukhumvit Line opened. Originally, this extension was scheduled to be completed by 2008. However, due to a combination of changes in government, a prolonged environmental study, and problems with locating a suitable train depot the extension was continually delayed. A further 16.5 km (10.3 mi), nine station extension from Saphan Mai to Khu Khot was also planned once the extension to Saphan Mai had been completed.

After multiple delays, in mid-2013 a decision was made to tender extensions (1) and (2) at the same time, by the end of 2013. However, the dissolution of parliament in November 2013 delayed this yet again. A tender was finally released in January 2014[13] with an April deadline before being delayed until late May 2014 due to concerns from bidders.[14] A military coup in late-May 2014 suspended the bidding process whilst the military administration reviewed all major projects. In late June, the military administration affirmed that the tender would proceed before the end of 2014. In August 2014, the MRTA announced that the new tender deadline was 30 September 2014.[15] Five bidders qualified and the successful bids were announced in December 2014.[16] The tender specified a construction period of 1,350 days.

On 3 April 2015, MRTA signed four contracts for this extension:[17]

Contract Notes Contractors Length Costs
1 Mo Chit to Saphan Mai Italian-Thai Development 2.8 km (1.7 mi) ฿15,269 million
2 Saphan Mai to Khu Khot UN-SH-CH joint-venture 2.6 km (1.6 mi) ฿6,657 million
3 Khu Khot Depot and Park & Ride buildings at Yaek Kor Por Aor and Khu Khot stations STEC-AS joint-venture 11 km (6.8 mi) ฿4,019 million
4 Track laying and system design STEC-AS joint-venture 10.5 km (6.5 mi) ฿2,841 million
Construction of the viaduct before entering Ha Yaek Lat Phrao station in 2018.

The MRTA, contactors and Thai Traffic Police met on 2 September 2015 and confirmed construction would begin on 8 September 2015. A flyover at Kasetsart was demolished, which commenced on 12 September 2015.[18]

At 31 December 2017, the progress of civil works construction was at 53.31% according to the MRTA.[19] As of April 2018, the MRTA stated that civil works progress had advanced to 63.27%.[20] As of 30 September 2018, overall construction had progressed to 78.79%.[21] By the end of March 2019, civil construction had nearly been completed having progressed to 99.42%.[22]

Testing of the final 9.8 km, seven-station-section from Wat Phra Sri Mahathat (N17) to Khu Khot (N24) began on 5 October.[23] The final section was officially opened on 16 December 2020 by the Prime Minister.[24]

Tamru Extension (future)

[edit]

There is a plan to extend Sukhumvit Line from Kheha to Tamru for 10.1 km (6.3 mi), including 5 additional stations: Sawangkhaniwat, Mueang Boran, Si Chan Pradit, Bang Pu, and Tamru. This extension has been suspended indefinitely until clarity is reached regarding passenger guarantees.

Code Station Name Planned Opening Platform Type
English Thai
↓ Continue from Kheha
Sawangkhaniwat สวางคนิวาส TBA Side
Mueang Boran เมืองโบราณ Side
Si Chan Pradit ศรีจันทร์ประดิษฐ์ Side
Bang Pu บางปู Side
Tamru ตำหรุ Side

Lam Luk Ka Extension (future)

[edit]

There is a plan to extend Sukhumvit Line from Khu Khot Station eastwards for 7.8 km (4.8 mi), including four additional stations: Khlong Sam, Khlong Si, Khlong Ha, and Eastern Ring Road-Lam Luk Ka. This extension has been suspended indefinitely until clarity is reached regarding passenger guarantees.

Code Station Name Planned Opening Platform Type
English Thai
↓ Continue from Khu Khot
Khlong Sam คลองสาม TBA Side
Khlong Si คลองสี่ Side
Khlong Ha คลองห้า Side
Eastern Ring Road-Lam Luk Ka วงแหวนตะวันออกลำลูกกา Side

Opening timeline

[edit]
Date Project Notes
5 December 1999 Bangkok Transit System Full commercial service was commenced from Mo Chit to On Nut stations along with the Silom Line.
12 August 2011 Bearing Extension Service extended to Bearing station.
14 May 2010 Sukhumvit Line was closed from 17.00 onwards due to 2010 Thai military crackdown.
29 May 2010 Resumed normal service.
22 May 2014 Sukhumvit Line operated with limited hours from 6:00 to 21:00 due to the curfew, which was a result of the 2014 Thai coup d'état.[25]
28 May 2014 Service hours were extended to 06.00-23.00[26]
14 June 2014 Resumed normal service.
3 April 2017 Samut Prakan Extension Service extended to Samrong station.
6 December 2018 Shuttle service has been deployed from Samrong to Kheha stations.
11 May 2019 Full commercial service was commenced from Mo Chit to Kheha stations.[27]
9 August 2019 Khu Khot Extension Service extended to Ha Yaek Lat Phrao station.
4 December 2019 Service extended to Kasetsart University station.
5 June 2020 Service extended to Wat Phra Si Mahathat station.
17 October 2020 Sukhumvit Line was temporarily closed from 15.00 due to the 2020–2021 Thai protests.[28]
18 October 2020 Mo Chit, Ha Yaek Lat Phrao, Phahon Yothin 24, Asok, Udom Suk, and Bang Na stations were temporarily closed due to the protests from 14.30[29]
16 December 2020 Khu Khot Extension Service extended to Khu Khot station.

Stations

[edit]
Code Station Name Image Opened Platform

Type

Park & Ride Transfers Notes
English Thai
Khu Khot คูคต 16 December 2020; 3 years ago (2020-12-16) Side
Yaek Kor Por Aor แยก คปอ. Side
Royal Thai Air Force Museum พิพิธภัณฑ์กองทัพอากาศ Side -
Bhumibol Adulyadej Hospital โรงพยาบาลภูมิพลอดุลยเดช Side -
Saphan Mai สะพานใหม่ Side -
Sai Yud สายหยุด Side -
Phahon Yothin 59 พหลโยธิน 59 Side -
Wat Phra Sri Mahathat วัดพระศรีมหาธาตุ 5 June 2020; 4 years ago (2020-06-05) Island - Interchange station with  MRT 
11th Infantry Regiment กรมทหารราบที่ 11 Side -
Bang Bua บางบัว Side -
Royal Forest Department กรมป่าไม้ Side -
Kasetsart University มหาวิทยาลัยเกษตรศาสตร์ 4 December 2019; 4 years ago (2019-12-04) Side - Connecting station to  MRT  (future)
Sena Nikhom เสนานิคม Side -
Ratchayothin รัชโยธิน Side -
Phahon Yothin 24 พหลโยธิน 24 Side -
Ha Yaek Lat Phrao ห้าแยกลาดพร้าว 9 August 2019; 5 years ago (2019-08-09) Island - Connecting station to Phahon Yothin for  MRT  , via a 330-metre elevated pedestrian walkway.
Mo Chit หมอชิต 5 December 1999; 24 years ago (1999-12-05) Side Connecting station to Chatuchak Park for  MRT 
Saphan Khwai สะพานควาย Side -
Sena Ruam เสนาร่วม[30] TBA Side - Provisional station
Ari อารีย์ 5 December 1999; 24 years ago (1999-12-05) Side -
Sanam Pao สนามเป้า Side -
Victory Monument อนุสาวรีย์ชัยสมรภูมิ Side -
Phaya Thai พญาไท Side - Connecting station to;
 ARL 
 SRT  (future)
Ratchathewi ราชเทวี Side - Connecting station to  MRT  (under construction)
Siam สยาม Stacked Island - Cross-platform interchange with  BTS 
Chit Lom ชิดลม Side -
Phloen Chit เพลินจิต Side -
Nana นานา Side -
Asok อโศก Side - Connecting station to Sukhumvit for  MRT 
Phrom Phong พร้อมพงษ์ Side -
Thong Lo ทองหล่อ Side -
Ekkamai เอกมัย Side - Connecting station to  MRL  (north section; future)
Phra Khanong พระโขนง Side - Connecting station to  MRL  (south section; future)
On Nut อ่อนนุช Side -
Bang Chak บางจาก 12 August 2011; 13 years ago (2011-08-12) Side -
Punnawithi ปุณณวิถี Side -
Udom Suk อุดมสุข Side -
Bang Na บางนา Side - Connecting station to Bang Na-Suvarnabhumi LRT (future)
Bearing แบริ่ง Side -
Samrong สำโรง 3 April 2017; 7 years ago (2017-04-03) Island - Interchange station to  MRT  via transfer gates
Pu Chao ปู่เจ้า 6 December 2018; 5 years ago (2018-12-06) Side -
Chang Erawan ช้างเอราวัณ Side -
Royal Thai Naval Academy โรงเรียนนายเรือ Side -
Pak Nam ปากน้ำ Side -
Srinagarindra ศรีนครินทร์ Side -
Phraek Sa แพรกษา Side -
Sai Luat สายลวด Side -
Kheha เคหะฯ Side

Rolling stock

[edit]
Rolling stocks of Sukhumvit Line
EMU-A1 approaching Victory Monument station
EMU-A2 heading towards Sanam Pao station
EMU-B1/B2 approaching Ha Yaek Lat Phrao station
EMU-B3 at Ekkamai station

Operation

[edit]

The Sukhumvit Line operates from 06:00 to 24:00 every day. During rush hour, there are two main service patterns:

  • Full Line operation from Khu Khot to Kheha
  • Short-run train from Mo Chit to Samrong

Apart from these two service patterns, some trains might terminate at Kasetsart University and Ha Yaek Lat Phrao or operate as through-running trains to/from Bang Wa station on the Silom Line.

Headways

[edit]
Sukhumvit Line headway[31]
Time Section Headway (Minutes:Seconds)
Monday - Friday
06:00 - 07:00 Full Line 05:00
07:00 - 09:00 Mo Chit - Samrong 02:40
Full Line 05:20
09:00 - 09:30 03:35
09:30 - 16:00 06:30
16:00 - 16:30 04:25
16:30 - 20:00 Mo Chit - Samrong 02:40
Full Line 05:20
20:00 - 21:00 04:25
21:00 - 22:00 06:00
22:00 - 24:00 08:00
Saturday to Sunday and Public Holiday
06:00 - 08:00 Full Line 07:00
08:00 - 11:00 05:55
11:00 - 21:00 Mo Chit - Samrong 04:30
Full Line 06:00
21:00 - 22:00 07:00
22:00 - 24:00 08:00

Route map

[edit]
[edit]

See also

[edit]

References

[edit]
  1. ^ ""กรมการขนส่งทางราง" เผยวันศุกร์สิ้นเดือนสิงหาคม 67 มีผู้ใช้บริการรถไฟฟ้าสายฉลองรัชธรรม (สีม่วง) และรถไฟฟ้าสายสีแดง สูงสุดตั้งแต่เปิดให้บริการมา หลังมีนโยบายอัตราค่าโดยสารรถไฟฟ้าสูงสุด 20 บาทตลอดสาย". กรมการขนส่งทางราง กระทรวงคมนาคม (in Thai). 2024-08-31. Retrieved 2024-09-04.
  2. ^ "Mass transit signalling". Bombardier Transportation. Archived from the original on 2022-01-01. Retrieved 2020-06-16.
  3. ^ "Bombardier Projects in Mass-transit signalling" (PDF). Archived from the original (PDF) on 2021-11-23.
  4. ^ "รถไฟฟ้าบีทีเอส (BTS Skytrain)".
  5. ^ "Smart EIA Plus : รายละเอียดรายงาน". eia.onep.go.th. Retrieved 2024-09-26.
  6. ^ Groundbreaking starts on new BTS extension, Daily News, 15 August 2006
  7. ^ BTS extension budget cut, Bangkok Post, 15 December 2006
  8. ^ "Ch Karnchang gets Phase 2 of Bearing-Samut Prakan route" The Nation, 13 April 2013
  9. ^ "BMA to postpone test run of Bearing-Samrong skytrain". Bangkok Post. Retrieved 2016-11-22.
  10. ^ Sasiwan Mokkhasen (2017-01-31). "Green Line Going Nowhere for at Least Two Years". Khaosod English. Retrieved 2017-02-25.
  11. ^ Asaree Thaitrakulpanich (2017-02-24). "First Station of Stalled BTS Green Line to Open April 1". Khaosod English. Retrieved 2017-02-25.
  12. ^ "MRTA pushes to fast-track launch of South Green Line". Bangkok Post. 1 December 2017.
  13. ^ http://www.mrta.co.th/sysRegister/register131217/proc17122556.pdf [bare URL PDF]
  14. ^ http://www.prachachat.net/news_detail.php?newsid=1401076541 "รฟม.ปรับทีโออาร์หมอชิต-คูคต กลางปี59 เปิดให้บริการสายสีม่วง" Prachachat News, 26 May 2014
  15. ^ "ข่าวรอบวัน". ประชาชาติธุรกิจ.
  16. ^ "5กลุ่มบริษัทผ่านคุณสมบัติสร้างรถไฟสีเขียว คาดหาผู้รับเหมาได้ไม่เกินต้นปี58 : มติชนออนไลน์". Archived from the original on 2016-03-04. Retrieved 2014-10-08.
  17. ^ "รฟม.เซ็นสัญญารถไฟฟ้าสายสีเขียวเหนือ เริ่มสร้างมิ.ย 58 คาดเปิดใช้ต้นปี".
  18. ^ "ผู้จัดการออนไลน์ รวดเร็ว สด ทุกเหตุการณ์".
  19. ^ https://www.mrta.co.th/th/news/information/ความก-าวหน-าการก-อสร-างรถไฟฟ-า-ณ-31-ธ-นวาคม-2560/. MRTA Press, 16 January 2018
  20. ^ https://www.mrta.co.th/th/news/information/ความก-าวหน-าการก-อสร-างรถไฟฟ-า-ณ-30-เมษายน-2561/. MRTA Press, 30 April 2018
  21. ^ "การรถไฟฟ้าขนส่งมวลชนแห่งประเทศไทย on Facebook". Facebook. Archived from the original on 2022-04-30.MRTA Press[user-generated source]
  22. ^ https://www.mrta.co.th/th/news/information/ความก-าวหน-าการก-อสร-างรถไฟฟ-า-ณ-30-เมษายน-2561/. MRTA Press, 30 April 2018
  23. ^ "BTS tests Green Line trains at seven new stations before public opening at year-end". The Nation. 7 October 2020. Archived from the original on 19 August 2013. Retrieved 17 February 2022.
  24. ^ "นับถอยหลัง 4 ธ.ค. 63 รถไฟฟ้า BTS สายสีเขียว เปิดทุกสถานี เชื่อม 3 จังหวัด". TNN Thailand. 17 November 2020.
  25. ^ "รถไฟฟ้า BTS-MRT ปิดให้บริการ 3 ทุ่มตั้งแต่คืนนี้ เปิด 6". ryt9.com (in Thai). Retrieved 2024-09-12.
  26. ^ "รถไฟฟ้า BTS-MRT ปรับเวลาเดินรถใหม่ 06.00-23.00 น. ตั้งแต่ 28". ryt9.com (in Thai). Retrieved 2024-09-12.
  27. ^ "บีทีเอสปรับเดินรถสายสุขุมวิท วิ่งถึงสถานีเคหะฯ ไม่ต้องเปลี่ยนขบวน". THAIRATH Money. Retrieved 2024-09-27.
  28. ^ "ความเคลื่อนไหวก่อนชุมนุม 17 ตุลา". Thai PBS (in Thai). Retrieved 2024-09-12.
  29. ^ "รถไฟฟ้าMRT ปิด 5 สถานี ส่วน BTS ปิด10 สถานี จนกว่าสถานการณ์คลี่คลาย". www.thairath.co.th (in Thai). 2020-10-18. Retrieved 2024-09-12.
  30. ^ Charuvastra, Teeranai; Chief, News (2019-04-10). "Construction of Sathorn BTS 'Ghost Station' Underway". Khaosod English. Retrieved 2020-03-25. {{cite news}}: |first2= has generic name (help)
  31. ^ "เวลาและความถี่การเดินรถ". www.bts.co.th. Retrieved 2024-11-16.