Orange Line (Bangkok)

MRT Orange Line รถไฟฟ้ามหานคร สายสีส้ม
Overview
Status	Under Construction (Eastern Section) Tendering (Western Extension)
Owner	Mass Rapid Transit Authority of Thailand
Locale	Bangkok, Thailand
Termini	Bang Khun Non
Stations	29 17 (Under construction) 12 (planned)
Service
Type	Rapid transit
System	MRT
History
Planned opening	2024 (Eastern section)
Technical
Line length	35.86 kilometers (22.28 mi)
Track length	22.57 kilometers (14.02 mi) (under construction)
Track gauge	1,435 mm (4 ft 8+1⁄2 in) standard gauge
Electrification	750 V DC third rail
Operating speed	80 km/h (50 mph)
Route map Legend Bang Khun Non  MRT  Siriraj Chao Phraya River Sanam Luang Democracy Monument  MRT  Lan Luang Yommarat  SRT  Ratchathewi  BTS  Pratunam Ratchaprarop  ARL  Rang Nam Din Daeng Pracha Songkhro  MRL  Thailand Cultural Centre  MRT  MRTA Wat Phra Ram 9 Ramkhamhaeng 12  MRL  Ramkhamhaeng University Rajamangala Ramkhamhaeng 34 Yaek Lam Sali  MRL  Si Burapha Khlong Ban Ma Sammakon Nom Klao Rat Pattana Min Phatthana Keha Ramkhamhaeng Min Buri  MRL  Yaek Rom Klao This diagram: view talk

The MRT Orange Line (Thai: รถไฟฟ้ามหานคร สายสีส้ม) is a rapid transit line of the Mass Rapid Transit Authority of Thailand (MRTA) in the Bangkok Metropolitan Area, Thailand. When fully completed, the MRT Orange line will be 35.9 km long with 29 stations (7 stations will be elevated for 8.9 km and 22 will be underground for 27 km), including an interchange with the current Thailand Cultural Centre Station of MRT Blue Line).

The line is divided into two sections; the 22.5km Eastern section from Suwinthawong to Thailand Cultural Centre^[1][2] and the 2nd phase 13.4km Western section from Thailand Cultural Centre to Bang Khun Non. Construction of the 22.5 km Eastern Section started in June 2017, and the line is scheduled to open in March 2024.^[3] Construction progress was 88.46% by the end of November 2021.^[4]

On 3 July 2020, the MRTA released the tender for the design and construction of the Western extension.^[5] However, in late August 2020 the tender submission deadline was subsequently delayed.^[6] and the MRTA amended the tender assessment criteria resulting in a lawsuit and an injunction suspending the tender decision.^[7] The tender was subsequently cancelled by the MRTA in February 2021 given ongoing litigation by the BTSC.^[8] After approval by the Administrative Court given ongoing litigation, a new tender issued in October has a deadline for bids of January 2022.^[9]

The Criminal Court Corruption and Malfeasance division hearing into the cancelled tender process will be conducted in late December 2021 which may still impact upon the reissued tender timeframe.^[10] The MRTA plans to review tender bids due in January for a period of 3 months before seeking final Cabinet approval of the winning bid in April 2022.

Route Alignment[]

The MRT 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.

The western section of the MRT Orange Line, 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.

History[]

The original plan of the MRT 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.^[11] 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.^[12] 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 and Ratchawithi road route to further run south to Pratunam and then west along Petchaburi Road and Larn Luang Road. Continuing farther west along Ratchadamnoen Klang Road and Sanam Luang before passing under the Chao Praya river and finally terminating at Bang Khun Non to interchange with the MRT Blue Line extension.

The MRT Orange line Eastern section 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.^[13] 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. On 19 April 2016, the Cabinet further approved a budget of 82.9 billion baht for Phase 1 Eastern section to build 17 stations and 22.5 km of rail from the Thailand Cultural Centre to Minburi, of which 12.2 km will be underground and 9 km will be elevated.^[14]

Construction Progress[]

Construction contracts were signed on 9 February 2017 between the MRTA and CKST Joint Venture consortium.^[15] Construction finally started in June 2017 with a 1980 day construction period with a scheduled opening in October 2022.^[16] 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.^[17] As of July 2018, overall construction progress is at 13.57%. As of August 2018, overall construction progress is at 16.21%.^[18] By 30 September 2018, overall construction had progressed to 18.33%.^[19] At the end of March 2019, construction has progressed to 32.12%.^[20] At the end of July 2019, civil construction was at 42.27%.^[21] At the end of October 2019, construction has progressed to 49.05%.^[22] At the end of January 2020, construction had progressed to 54.93%.^[23] By the end of May 2020, construction had progressed to 62.42%.^[24] At the end of July 2020, construction had progressed to 66.06%.^[25] On 5 October 2020, TBM number 2 finished tunneling and reached Ramkhamhaeng 12 station box as part of contract 2.^[26] At the end of September 2020, was at 69.82%.^[27] At the end of January 2020, construction had progressed to 76.09%.^[28] Construction progress was 79.44% complete by the end of March 2021.^[29] Construction progress was 81.03% by the end of April 2021.^[30] Construction progress was 87.24% by the end of October 2021.^[31]

Construction progress was 88.46% by the end of November 2021.^[32] The eastern section has a planned opening date of March 2024.

Construction contracts[]

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.^[33]

Phase 2 Western Extension[]

The Phase 2 Western extension of the Orange line will run from Thailand Cultural Centre to Bang Khun Non via Pratunam. The 13.4km 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.^[35] However, this decision was delayed until 2018 as Cabinet requested options to be considered for a joint public and private investment proposal.^[36] There were further delays into 2019, but the MRTA finalised a joint PPP plan for Cabinet to approve in mid 2019.^[37] On 28 January 2020, the Cabinet approved the 142 billion baht extension. It is expected to open in February 2026 and serve 439,000 passengers daily.^[3][38]

On 3 July 2020, the MRTA released the tender for the design, construction and operation of the Western extension as a Public-Private Partnership project on a 30 year lease.^[39] The tender deadline was 23 September 2020 with the successful bidder to be announced in early October 2020. The tender specified a construction period of 3 and a half years.

There were 10 tenderers that purchased the request for proposal (RFP) form with two major consortiums that submitted final bids:

• Bangkok Expressway and Metro Public Company Limited (BEM) - operator of the MRT Blue Line and MRT Purple Lines.
• BSR Consortium, led by Bangkok Mass Transit System Public Company Limited (BTSC), and supported by BTS Group Holdings (BTS Group) and Sino-Thai Engineering and Construction (STECON). Owner and future operator of the MRT Pink Line and MRT Yellow Lines which are both under construction.

However, in late August 2020 the tender submission deadline was subsequently delayed by the MRTA.^[40] Thereafter, the MRTA amended the tender assessment criteria resulting in a lawsuit being lodged by the BTSC in the Administrative Court on 17 September 2020 with the Court imposing an injunction suspending the tender decision.^[41] The tender was subsequently cancelled by the MRTA in February 2021 due to litigation by the BTSC.^[42] After approval by the Administrative Court given ongoing litigation, a new tender issued in October has a deadline for bids of January 2022.^[43]

The Criminal Court Corruption and Malfeasance division hearing into the cancelled tender process will be conducted from 14 to 24 December 2021 which may still impact upon the reissued tender timeframe.^[44] The MRTA plans to review tender bids due in January for a period of 3 months before seeking Cabinet approval of the winning bid in April 2022. However, there are construction budget concerns for the extension as steel prices have increased by 40% since the previous budget was approved.^[45]

Stations[]

Code	Station Name	Thai	Interchange	Notes
Thailand Cultural Centre - Suwinthawong: 22.5km (Under construction)
OR29	Yeak Rom Klao	แยกร่มเกล้า [46]
OR28	Min Buri	มีนบุรี	MRL  (under construction)
OR27	Kheha Ramkhamhaeng	เคหะรามคำแหง
OR26	Min Phatthana	มีนพัฒนา
OR25	Rat Phatthana	ราษฎร์พัฒนา
OR24	Nom Klao	น้อมเกล้า
OR23	Sammakorn	สัมมากร
OR22	Khlong Ban Ma	คลองบ้านม้า		Park & Ride service
OR21	Sri Burapha	ศรีบูรพา
OR20	Yeak Lam Sali	แยกลำสาลี [47]	MRL  (under construction)  MRT  (design phase)
OR19	Ramkhamhaeng 34	รามคำแหง 34 [48]
OR18	SAT	กกท.
OR17	Ramkhamhaeng University	มหาวิทยาลัยรามคำแหง
OR16	Ramkhamhaeng 12	รามคำแหง 12
OR15	Wat Phra Ram 9	วัดพระราม 9	MRL  (proposed)
OR14	MRTA	รฟม.		Depot
OR13	Thailand Cultural Centre	ศูนย์วัฒนธรรมแห่งประเทศไทย	MRT	Park & Ride service
Bang Khun Non - Thailand Cultural Centre: 13.4km (Western Extension - under tender)
OR12	Pracha Songkhro	ประชาสงเคราะห์	MRL  (planned)
OR11	Din Daeng	ดินแดง
OR10	Rang Nam	รางน้ำ
OR9	Ratchaprarop	ราชปรารภ	ARL
OR8	Pratunam	ประตูน้ำ
OR7	Ratchathewi	ราชเทวี	BTS : Ratchathewi Station
OR6	Yommarat	ยมราช	SRT  (Proposed)
OR5	Lan Luang	หลานหลวง
OR4	Democracy Monument	อนุสาวรีย์ประชาธิปไตย	MRT  extension (approved)
OR3	Sanam Luang	สนามหลวง
OR2	Siriraj	ศิริราช	SRT  (Proposed)
OR1	Bang Khun Non	บางขุนนนท์	MRT   SRT  (Proposed)

Network Map[]

See also[]

References[]

External links[]

Wikimedia Commons has media related to MRT Orange Line.

• "MRT Orange Line Eastern Section"
• Airport Rail Link, BTS, MRT & BRT network map