MRT Orange Line

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MRT Orange Line
รถไฟฟ้ามหานคร สายสีส้ม
MRT (Bangkok) Orange Logo.svg
Future MRT Orange Line Platforms, TLCC Station.jpg
TypeRapid transit
StatusUnder Construction (Eastern Section)
Bidding and Tendering (Western Extension)
LocaleBangkok, Thailand
TerminiTaling Chan
Min Buri
Stations30 (planned)
Openedearly 2023 (Eastern section)
OwnerMass Rapid Transit Authority of Thailand
Line length39.86 kilometers (24.77 mi)
Track length22.57 kilometers (14.02 mi) (under construction) [1]
Track gauge1,435 mm (4 ft 8 12 in) standard gauge
ElectrificationThird rail
Operating speed80 km/h (50 mph)
Route map

Taling Chan
Bang Khun Non
Sanam Luang
Democracy Monument
Lan Luang
Ban Tad Thong
ARLbangkok.svg  ARL 
Rang Nam
Din Daeng
Pracha Songkhro
Thailand Cultural Centre
MRTA Depot
Khlong Lat Phrao
Ram Khamhaeng
Rajamangala Stadium
Hua Mak
Lam Sali
Si Burapha
Khlong Ban Ma
Nom Klao
Rat Pattana
Min Pattana
Keha Ramkhamhaeng
Min Buri

The MRT Orange Line (Thai: รถไฟฟ้ามหานคร สายสีส้ม) is a rapid transit lines of the Mass Rapid Transit Authority of Thailand (MRTA) in the Bangkok Metropolitan Area, Thailand.

This Line is divided into two sections; the Eastern section from Suwinthawong - Thailand Cultural Centre (22.5km) and the 2nd phase Western section from Thailand Cultural Centre - Bang Khun Non (17.5 km). Construction of the 22.5km Eastern Section started in June 2017 and the line is scheduled to open in early 2023.[2]

When fully completed, the MRT Orange line will be 37.5 km long with 30 stations (7 stations will be elevated and 23 will be underground), including an interchange with the current Thailand Cultural Centre Station of MRT Blue Line).

At the end of May 2019, construction has progressed to 36.65%[3]


The original plan of the Orange Line aimed to serve travel demand between the northwestern area of Thonburi, at Bang Bamru Railway Station in Bang Phlat District, and the east of Bangkok in Bang Kapi District. It was planned to run along Ramkhamhaeng Road and Ratchawithi Road, passing many public places like Hua Mak Stadium, Dusit Zoo and Victory Monument, and provide access to universities including Ramkhamhaeng University, Suan Sunandha and Suan Dusit Rajabhat University and many government offices.

In 2009, the proposed MRT Brown line from Bang Kapi District, elevated along Ram Khamhaeng Road, to the eastern suburb in Saphan Sung District and Min Buri District, was merged with the Orange Line in Bangkok's mass rapid transit master plan.[4] In July 2011, the section from Bang Khun Non to Taling Chan was finally scrapped in favour of the SRT Light Red line spur line which duplicates the same route.[5] In 2012, there were further notable changes made to the central and western sections of the Orange Line. The section from Din Daeng District to Bang Bamru was rerouted away from Victory Monument to Pratunam, Petchaburi Road and Larn Luang Road, then under Ratchadamnoen Klang Road and terminating at Bang Khun Non to interchange with the MRT Blue Line extension.[5]

The Orange line was originally planned to be tendered by the end of 2013. However, due to protests by residents regarding station footprint and compulsory land acquisition around stations at Pratunam, Ratchaprarop, Pracha Songkhro and Soesim stations the MRTA needed another 12 months to redesign sections of the line.[6] Subsequently, political protests against the Thai government led to the metro transport funding bill lapsing when parliament was dissolved in December 2013. On 9 December 2015, Cabinet finally approved the Orange Line.


The Orange Line starts at Suwinthawong rd in Min Buri District in Bangkok's eastern suburbs as an elevated line running along Ramkhamhaeng Road. It will interchange with the future MRT Yellow Line at Lam Sali station. It then proceeds underground near Lam Sali intersection in Bang Kapi District, where there will be a transfer to the MRT Yellow Line. It continues southwest along Ramkhamhaeng Road, passing Hua Mak Stadium and Ramkhamhaeng University to Rama IX rd intersection. The line then proceeds west along Rama IX rd and crosses Pradit Manutham Road to the current Mass Rapid Transit Authority of Thailand (MRTA) Headquarters and MRT Blue line depot. Then it routes north to the Thailand Cultural Centre Station to interchange with the MRT Blue Line.

For the western section of the Orange Line, it runs west from Thailand Cultural Centre Station via Din Daeng housing estates and Bangkok City Hall 2 to Vibhavadi Rangsit Road, Sam Liam Din Daeng Junction. Then turns left into Ratchaprarop Road towards Pratu Nam and turns right into Phetchaburi Road then interchanges with BTS Sukhumvit Line at Ratchathewi Station. It continues along Lan Luang Road and Ratchadamnoen Avenue, then crosses the Chao Phraya River near Phra Pinklao Bridge, passes Siriraj Hospital and goes along Bangkok Noi Rail line and terminates at Bang Khun Non at Charan Sanitwong rd, where it interchanges with the MRT Blue Line.


On 19 April 2016, the Cabinet further approved a budget of 82.9 billion baht for Phase 1 East section to build 17 stations and 21.2 km of rail from the Thailand Cultural Centre to Minburi, of which 12.2 km will be underground and 9 km will be elevated.[7] Construction contracts were signed on 9 February 2017 between the MRTA and CKST Joint Venture consortium.[8] Construction finally started in June 2017 with a 1980 day construction period with a scheduled opening in October 2022.[9] Project construction is divided into 4 contracts.

As of 31 December 2017, the progress of civil works construction was at 4.66% according to the MRTA. [10] As of July 2018, overall construction progress is at 13.57%. As of August 2018, overall construction progress is at 16.21%.[11] By 30 September 2018, overall construction had progressed to 18.33% [12] At the end of March 2019, construction has progressed to 32.12%[13]

The eastern section has a planned opening date of early 2023.

Construction contracts[edit]

Construction is divided into four separate contracts.

Contract 1 is for 6.29km underground and 4 underground stations from Thai Cultural Centre interchange station to Rankhamhaeng 12 station.

Contract 2 is for 3.44km underground and 4 underground stations from Ramkhamheang 12 station to Hua Mark station.

Contract 3 is for 4.04km underground and 3 underground stations from Hua Mark station to Klong Ban Ma station.

Contract 4 is 8.8km and 7 elevated stations from Klong Ban Ma to Suwinthawong terminus station.[14]

Contract Notes Kilometre
1 Thailand Cultural Centre to Ramkhamhaeng 12 (4 stations) 6.29
2 Ramkhamhaeng 12 to Hua Mark (4 stations) 3.44
3 Hua Mark to Klong Ban Ma (3 stations) 4.04
4 Klong Ban Ma to Suwinthawong (7 stations) 8.8
5 Rolling stock
6 Signalling and Electrical

Phase 2 Western Extension[edit]

The Phase 2 Western extension of the Orange line will run from Thailand Cultural Centre to Bang Khun Nun via Pratunam. The 17.5km western section will run underground with 12 stations.

The Thai Cabinet was expected to approve the 121 billion baht budget for the Western extension in mid 2017 with a tender due for the 2nd half of 2017.[15] However, this decision was delayed until 2018 as Cabinet requested options to be considered for a joint public and private investment proposal.[16] There were further delays into 2019, but the MRTA finalised a joint PPP plan for Cabinet to approve in mid 2019. [17]


In the table below, an italicised name indicates that the station is not yet in operation.

Code Station Name Thai Interchange Notes
Thailand Cultural Centre - Suwinthawong (Construction underway)
OR29 Suwinthawong สุวินทวงศ์
OR28 Min Buri มีนบุรี BSicon exTRAM.svg  MRL  (c. 2022)
OR27 Keha Ramkhamhaeng เคหะรามคำแหง
OR26 Min Phatthana มีนพัฒนา
OR25 Rat Phatthana ราษฎร์พัฒนา
OR24 Nom Klao น้อมเกล้า
OR23 Sammakon สัมมากร
OR22 Khlong Ban Ma คลองบ้านม้า Park & Ride service
OR21 Sri Burapha ศรีบูรพา
OR20 Lam Sali ลำสาลี BSicon exTRAM.svg  MRL  (c. 2022)

 MRT  (proposed)

OR19 Hua Mak หัวหมาก
OR18 Rajamangala ราชมังคลา
OR17 Ramkhamhaeng รามคำแหง
OR16 Ramkhamhaeng 12 รามคำแหง 12
OR15 Pradit Manutham ประดิษฐ์มนูธรรม BSicon exTRAM.svg  MRL  (proposed)
OR14 MRTA รฟม. Depot
OR13 Thailand Cultural Centre ศูนย์วัฒนธรรมแห่งประเทศไทย  MRT  Park & Ride service
Bang Khun Non - Thailand Cultural Centre (Western Extension)
OR12 Pracha Songkhro ประชาสงเคราะห์ BSicon exTRAM.svg  MRL  (proposed)
OR11 Din Daeng ดินแดง
OR10 Rang Nam รางน้ำ
OR9 Ratchaprarop ราชปรารภ BSicon exTRAM.svg ARLbangkok.svg  ARL 
OR8 Pratunam ประตูน้ำ
OR7 Ratchathewi ราชเทวี BSicon exTRAM.svg  BTS : Ratchathewi Station
OR6 Yommarat ยมราช BSicon exTRAM.svg  SRT  (Planned)
OR5 Lan Luang หลานหลวง
OR4 Democracy Monument อนุสาวรีย์ประชาธิปไตย  MRT  extension (approved)
OR3 Sanam Luang สนามหลวง
OR2 Siriraj ศิริราช
OR1 Bang Khun Non บางขุนนนท์  MRT  extension (c. 2020)

See also[edit]


  1. ^ "Six contracts signed for construction of B79.2bn Orange Line". Bangkok Post. 9 February 2017.
  2. ^ "Six contracts signed for construction of B79.2bn Orange Line". Bangkok Post. Retrieved 2017-02-12.
  3. ^ MRTA Press, 7 June 2019
  4. ^
  5. ^ a b
  6. ^ "Archived copy". Archived from the original on 2014-03-20. Retrieved 2014-03-20.CS1 maint: Archived copy as title (link)
  7. ^
  8. ^ Thai PBS, 9 February 2017
  9. ^ Bangkok Post, 14 July 2017
  10. ^ความก-าวหน-าการก-อสร-างรถไฟฟ-า-ณ-31-ธ-นวาคม-2560/. MRTA Press, 16 January 2018
  11. ^ "MRT Orange Line Construction progress". Retrieved 2018-09-11.
  12. ^ MRTA Press, 12 October 2018
  13. ^ MRTA Press, 12 April 2019
  14. ^ MRTA Tender Invitation, 29 June 2016
  15. ^ "B385bn Rail Projects expected to go ahead". Bangkok Post. 26 May 2017.
  16. ^ "Ministry mulls Orange Line cost transfer". Bangkok Post. 15 August 2017.
  17. ^ "B230bn for Orange Line". Bangkok Post. 7 May 2019.

External links[edit]