# Orange Line (Bangkok)

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Planned metro line in Bangkok, Thailand

MRT Orange Line รถไฟฟ้ามหานคร สายสีส้ม Min Buri Station Overview Status Structure Complete : OR13 Thailand Cultural Centre - OR29 Yaek Rom Klao Under Construction : OR02 Bang Khun Non - OR13 Thailand Cultural Centre Future : OR01 Taling Chan - OR02 Bang Khun Non Owner Mass Rapid Transit Authority of Thailand Locale Bangkok, Thailand Termini OR01 Taling Chan OR29 Yaek Rom Klao Stations 17 (Structure Complete) 11 (Under construction) 1 (future) Website https://www.mrta-orangelineeast.com/en/home Service Type Rapid transit System MRT Operator Bangkok Expressway and Metro Depot Phra Ram 9 Rolling stock Siemens 32 three-car trains History Commenced 9 February 2017; 9 years ago (2017-02-09) Planned opening 2028 : OR13Thailand Cultural Centre - OR29 Yaek Rom Klao [1]July 2030 : OR02 Bang Khun Non - OR13 Thailand Cultural Centre [1]TBA : OR01 Taling Chan - OR02 Bang Khun Non Technical Line length 38.78 km (24.10 mi) Elevated 8.43 km (5.24 mi) Underground: 30.35 km (18.86 mi) 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 Din Daeng Pracha Songkhro MRL Thailand Cultural Centre MRT Rama 9 Depot MRTA Wat Phra Ram 9 Ramkhamhaeng 12 MRL Ramkhamhaeng University SAT Ramkhamhaeng 40 Yaek Lam Sali MRT Si Burapha Ban Ma Sammakorn Nom Klao Rat Phatthana Wat Bang Pheng Kheha Ram Min Buri MRT Yaek Rom Klao This diagram: view talk edit

The **MRT Orange Line** ([Thai](/source/Thai_language): รถไฟฟ้ามหานคร สายสีส้ม) is an under-construction [rapid transit](/source/Rapid_transit) line of the [Mass Rapid Transit Authority of Thailand](/source/Mass_Rapid_Transit_Authority_of_Thailand) (MRTA) in the [Bangkok Metropolitan Area](/source/Bangkok_Metropolitan_Area), [Thailand](/source/Thailand). When fully completed, the MRT Orange line will be 35.9 km (22.3 mi) long with 29 [stations](/source/Metro_station) (7 stations will be elevated for 8.9 km (5.5 mi) and 22 will be underground for 27 km (16.8 mi)), including an interchange with the current [Thailand Cultural Centre Station](/source/Thailand_Cultural_Centre_MRT_Station) of [MRT Blue Line](/source/MRT_Blue_Line)).

The MRT Orange Line is divided into two sections: the 22.5 km (14.0 mi) Eastern Section, running from Yaek Rom Klao to Thailand Cultural Centre,[2][3] and the 13.4 km (8.3 mi) Western Section, extending from Thailand Cultural Centre to Bang Khun Non.

Construction of the Eastern Section commenced in June 2017, and civil works were completed 100% as of June 2023.[4] However, delays in awarding contracts for the signaling systems and rolling stock postponed the line’s opening. In December 2024, Bangkok Expressway and Metro Public Company Limited (BEM) signed a contract with Siemens Mobility and its consortium partners to supply rolling stock and signaling systems for both sections of the line. On August 6, 2025 the MRTA announced that the Eastern Section is projected to open to the public in late-2027[5] earlier than the previously announced opening date of 2028.[1]

Construction of the Western Section began in July 2024. As of the end of July 2025, civil construction had progressed to 14.06%.[6] This section is expected to require approximately six years for completion, with an anticipated opening in July 2030.[1]

## Route alignment

The MRT Orange Line will travel along a mostly east-west axis from Bangkok's eastern suburbs, passing through the city center and [Ko Rattanakosin](/source/Ko_Rattanakosin), before serving [Thonburi](/source/Thonburi) on the west bank of the [Chao Phraya River](/source/Chao_Phraya_River).

The initial phase of the Orange Line will travel along an elevated structure above Ramkhamkhaeng Road from Yaek Rom Klao station, near the Ramkhamhaeng-Suwinthawong Junction in [Min Buri District](/source/Min_Buri_District), to Ban Ma Junction in [Bang Kapi District](/source/Bang_Kapi_District) for 7.5 km (4.7 mi) before transitioning underground. The line will continue to travel southwest under Ramkhamhaeng Road until its intersection with Rama IX Road, whence it will proceed westward under Rama IX Road before terminating at [Thailand Cultural Centre](/source/Thailand_Cultural_Centre_MRT_station).

Interchanges for this segment will be available to [MRT Pink Line](/source/MRT_Pink_Line) at [Min Buri](/source/Min_Buri_MRT_station), [MRT Yellow Line](/source/MRT_Yellow_Line) at [Yaek Lam Sali](/source/Yaek_Lam_Sali_MRT_station), and the [MRT Blue Line](/source/MRT_Blue_Line) at [Thailand Cultural Centre](/source/Thailand_Cultural_Centre_MRT_station).

The western section of the MRT Orange Lin will travel west from [Thailand Cultural Centre Station](/source/Thailand_Cultural_Centre_MRT_Station) via Din Daeng housing estates and Bangkok City Hall 2 to [Vibhavadi Rangsit Road](/source/Vibhavadi_Rangsit_Road), Sam Liam Din Daeng Junction. It will follow Ratchaprarop Road towards [Pratunam](/source/Pratunam) before following Phetchaburi Road and Lan Luang Road as the alignment approaches [Ko Rattanakosin](/source/Ko_Rattanakosin). The line will travel under [Ratchadamnoen Avenue](/source/Ratchadamnoen_Avenue) to serve [Sanam Luang](/source/Sanam_Luang) and [Banglamphu](/source/Banglamphu) before crossing the [Chao Phraya River](/source/Chao_Phraya_River) near [Phra Pinklao Bridge](/source/Phra_Pinklao_Bridge). Once in [Thonburi](/source/Thonburi), the line will follow the [Bangkok Noi](/source/Bangkok_Noi_District) spur line of the [SRT commuter train](/source/State_Railway_of_Thailand) before terminating at Bang Khun Non, located at Charan Sanitwong road, where there will be an interchange with the [MRT Blue Line](/source/MRT_Blue_Line).

In addition to interchanging with the [MRT Blue Line](/source/MRT_Blue_Line), the western segment will also include an interchange to the [Airport Rail Link](/source/Airport_Rail_Link_(Bangkok)) at [Ratchaprarop station](/source/Ratchaprarop_station), the BTS [Sukhumvit Line](/source/Sukhumvit_Line) at [Ratchathewi Station](/source/Ratchathewi_BTS_Station), the [MRT Purple Line](/source/MRT_Purple_Line) at the future [Democracy Monument station](/source/Democracy_Monument_MRT_station). A further extension to [Taling Chan railway station](/source/Taling_Chan_railway_station) is envisioned.

## History

### Development

The original plan of the MRT Orange Line aimed to serve travel demand between the northwestern area of [Thonburi](/source/Thonburi), at Bang Bamru Railway Station in [Bang Phlat District](/source/Bang_Phlat_District), and the east of [Bangkok](/source/Bangkok) in [Bang Kapi District](/source/Bang_Kapi_District). It was planned to run along Ramkhamhaeng Road and [Ratchawithi Road](/source/Ratchawithi_Road), passing many public places like [Hua Mak Stadium](/source/Rajamangala_Stadium), [Dusit Zoo](/source/Dusit_Zoo) and [Victory Monument](/source/Victory_Monument_(Bangkok)), and provide access to universities including [Ramkhamhaeng University](/source/Ramkhamhaeng_University), Suan Sunandha and Suan Dusit [Rajabhat University](/source/Rajabhat_University) and many government offices. In the 1990s proposal for the Orange Line, it indicates a route length of 27.3 kilometers from Bang Kapi to [Rat Burana District](/source/Rat_Burana_district), while the planned extensions are to Ban Na for 16.4 kilometers and finally to [Min Buri District](/source/Min_Buri_district) for 10 kilometers.[7]

In 2009, OTP proposed that the original MRT Brown line plan from Bang Kapi District elevated along Ram Khamhaeng Road to the eastern suburbs in [Saphan Sung District](/source/Saphan_Sung_District) and [Min Buri District](/source/Min_Buri_District), be merged with the Orange Line and updated Bangkok's mass rapid transit master plan accordingly.[8] In July 2011, the section from Bang Khun Non to Taling Chan was finally scrapped in favour of the [SRT Light Red Line](/source/SRT_Light_Red_Line) spur line which duplicates the same route.[9] In 2012, there were further notable changes made to the central and western sections of the Orange Line. The section from [Din Daeng District](/source/Din_Daeng_District) to Bang Bamru was rerouted away from Victory Monument and Ratchawithi road route to further run south to [Pratunam](/source/Pratunam) and then west along Petchaburi Road and Larn Luang Road. Continuing farther west along [Ratchadamnoen Klang Road](/source/Ratchadamnoen_Klang_Road) and [Sanam Luang](/source/Sanam_Luang) before passing under the [Chao Praya](/source/Chao_Praya) river and finally terminating at Bang Khun Non to interchange with the [MRT Blue Line](/source/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.[10] 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 (14.0 mi) of rail from the Thailand Cultural Centre to Minburi, of which 12.2 km (7.6 mi) will be underground and 9 km (5.6 mi) will be elevated.[11] The consultation was led by MHPM for project implementation services to Chotjinda Consultant for construction supervision and to MAA Consultant, also for project management and construction.[12]

### Western section tender delay and litigation

On 3 July 2020, the MRTA released the tender for the design and construction of the Western extension.[13] However in late August 2020, the tender submission deadline was subsequently delayed.[14] and the MRTA amended the tender assessment criteria resulting in a lawsuit and an injunction suspending the tender decision.[15] The tender was subsequently cancelled by the MRTA in February 2021 given ongoing litigation by the BTSC.[16] After approval by the Administrative Court given ongoing litigation, a new tender issued in October has a deadline for bids of January 2022.[17]

The Criminal Court - Corruption and Malfeasance Division hearing into the cancelled tender process was conducted in late December 2021 which further delayed the reissued tender timeframe.[18] Subject to court approval, the MRTA planned to review tender bids for a period of 3 months before seeking Cabinet approval for a reissued tender in April or May 2022. The MRTA reissued the new tender on 24 May 2022 with tender packages available for purchase until 10 June.[19] Fourteen different companies purchased the auction envelopes.[20]

The 141 billion baht western extension consists of 86 billion baht for civil works, 14 billion for land appropriation and 31 billion for systems installation, rolling stock and maintenance. The winning bidder was announced by the MRTA on 9 September 2022 with BEM winning the right to build and run the extension over the ITD consortium.[21] However, continued litigation by the BTSC into 2023 has delayed the start of construction.

In November 2024, [AECOM](/source/AECOM) has been chosen by CH. Karnchang Plc (CK) is the lead designer for the western section, while [Egis](/source/Egis_Group) is to offer project management and supervision services on a section.[22][23] EPC consultancy services were handled by Dorsch Gruppe and its Asian subsidiary, along with China Railway No. 2 Engineering Group Co., Ltd.[24]

## Construction progress

### Eastern section

Construction contracts were signed on 9 February 2017 between the MRTA and CKST Joint Venture consortium.[25] Construction finally started in June 2017 with a 1980 day construction period with a scheduled opening in October 2022.[26]

At the end of the year, 31 December 2017, progress of civil works construction was at 4.66% according to the MRTA.[27] By the end of July 2018, overall construction progress was 13.57%. By 30 September 2018, overall construction had progressed to 18.33%. [28] At the end of March 2019, construction had progressed to 32.12%.[29] At the end of July 2019, civil construction was at 42.27%. [30] At the end of October 2019, construction had progressed to 49.05%.[31]

At the end of January 2020, construction had progressed to 54.93%.[32] By the end of May 2020, construction had progressed to 62.42%. [33] On 5 October 2020, TBM number 2 finished tunneling and reached Ramkhamhaeng 12 station box as part of contract 2.[34] At the end of September 2020, was at 69.82%.[35]

At the end of January 2021, construction had progressed to 76.09%.[36] Construction progress was 81.03% by the end of April 2021.[37] Construction progress was 87.24% by the end of October 2021.[38] By the end of March 2022, construction progress was at 92.69%.[39] By the end of May 2022, construction had progressed to 94.51%.[40] As of March 23 2023, construction had progressed to 99.00%[41]

By the end of June 2023, construction had progressed to 100.00%.[4]

Contract Notes Contractor(s) Kilometre Cost E1 OR13 Thailand Cultural Centre to OR16 Ramkhamhaeng 12 CKST Joint Venture 6.29 ฿20,633.00 million E2 OR16 Ramkhamhaeng 12 to OR19 Hua Mak 3.44 ฿21,507.00 million E3 OR19 Hua Mak to OR22 Klong Ban Ma Italian-Thai Development 4.04 ฿18,570.00 million E4 OR22 Klong Ban Ma to OR29 Yaek Rom Klao Unique Construction and Engineering 8.8 ฿9,990.00 million E5 Depot and Park & Ride CKST Joint Venture ฿4,831.24 million E6 Track and Electrical Unique Construction and Engineering ฿3,690.00 million Total Budget ฿79,221.24 million

### Western section

The Phase 2 Western extension of the Orange line will run from Thailand Cultural Centre to Bang Khun Non via Pratunam. The 13.4 km (8.3 mi) 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.[42] However, this decision was delayed until 2018 as Cabinet requested options to be considered for a joint public and private investment proposal.[43] There were further delays into 2019, but the MRTA finalised a joint PPP plan for Cabinet to approve in mid 2019.[44] On 28 January 2020, the Cabinet approved the 142 billion baht extension. It was originally expected to open in February 2026 and serve 439,000 passengers daily.[45][46]

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.[13] 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 three 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](/source/MRT_Blue_Line) and [MRT Purple Lines](/source/MRT_Purple_Line).

- 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). BTSC is the operator of the [MRT Pink Line](/source/MRT_Pink_Line) and [MRT Yellow Lines](/source/MRT_Yellow_Line).

However, in late August 2020 the tender submission deadline was subsequently delayed by the MRTA.[14] 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.[15] The tender was subsequently cancelled by the MRTA in February 2021 due to litigation by the BTSC.[16] After approval by the Administrative Court given ongoing litigation, a new tender issued in October has a deadline for bids of January 2022.[17]

The Criminal Court Corruption and Malfeasance division hearings into the cancelled tender process were conducted from 14 to 24 December 2021 and have delayed the reissued tender timeframe.[47] Subject to court approval, the MRTA planned to review all tender bids for a period of 3 months before seeking final Cabinet approval of the winning bid in April 2022. However, there are also construction budget concerns for the extension as steel prices have increased by 40% since the previous budget was approved.[48] The EIA for the western extension was also updated in December 2021 as Din Daeng station was moved north by 500m, Pracha Songkhro station was moved east by 450m and Yommarat station was redesigned.[*[citation needed](https://en.wikipedia.org/wiki/Wikipedia:Citation_needed)*]

The MRTA reissued the new tender auction on 24 May 2022 with tender packages available for purchase until 10 June.[19] The 141 billion baht western extension consists of 86 billion baht for civil works, 14 billion for land appropriation and 31 billion for systems installation, rolling stock and maintenance. The winning bidder was announced by the MRTA on 9 September 2022 with BEM winning the right to build and run the extension over the ITD consortium.[21]

On 18 July 2024, construction contracts were signed at the MRTA office. The Minister of Transport, [Suriya Juangroongruangkit](/source/Suriya_Juangroongruangkit), instructed [MRTA](/source/Mass_Rapid_Transit_Authority_of_Thailand) and [BEM](/source/Bangkok_Expressway_and_Metro), the concession holder, to expedite the track and electrical works on the Orange Line's eastern section from the [Thailand Cultural Centre](/source/Thailand_Cultural_Centre_MRT_station) to Yaek Rom Klao for completion as soon as possible. The primary objective is to open the eastern section by early 2028, with the western section set to be completed ahead of schedule by November 2028. It was confirmed that the Orange Line’s maximum fare will be capped at 20 Baht or with a flat rate of 20 Baht for the entire route.[49]

Contract Notes Contractor(s) Kilometre (km) Progress (June 2025) Cost 1 OR02 Bang Khun Non to OR13 Thailand Cultural Centre CKST-OL Consortium (consisting of CH. Karnchang and STECON Group) 13.1 11.87% ฿82,501.869 million 2 M&E Works and Rolling Stocks 5.61% ฿26,714.000 million Total Budget 11.15%[citation needed] ฿109,215.869 million

#### Discovery of human remains at Siriraj Station site

On March 18, 2025, archaeologists made a remarkable discovery during an excavation at the construction site of Siriraj Station. Over 70 human skeletons were unearthed beneath the Arun Amarin Bridge, opposite [Wat Amarin](/source/Wat_Amarinthraram), along with a large ceramic jar containing cremated bone fragments. This discovery, made as part of a mandated archaeological survey by the [Fine Arts Department](/source/Fine_Arts_Department) prior to the [Siriraj hospital](/source/Siriraj_Hospital) expansion, has drawn significant attention from historians and researchers.

The burials show unique and previously unrecorded characteristics in Thai archaeology: bodies were laid in an extended position with slightly bent legs, heads oriented westward, and faces tilted southward. Some of the remains were found in alarming postures with hands and feet bound behind their backs, suggesting possible [mass execution](/source/Mass_execution).

Preliminary assessments date the remains to approximately 200–500 years ago, potentially linking them to the [Thonburi period](/source/Thonburi_Kingdom). Experts speculate that this site may be tied to mass executions during the turbulent years before the establishment of [Bangkok](/source/Bangkok) as the capital in 1782. However, further bone dating and DNA testing are required to confirm the period and possible links to pre-[Rattanakosin](/source/Rattanakosin_Kingdom_(1782%E2%80%931932)) communities.

The site itself lies within a historically significant area once part of Wang Lang Palace, built around 200 years ago, and may overlap with an ancient settlement dating back 2,000–3,000 years. The discovery of numerous cremation jars alongside the skeletons suggests complex and varied mortuary practices, indicating cultural and ritual significance.

The [Mass Rapid Transit Authority of Thailand](/source/Mass_Rapid_Transit_Authority_of_Thailand) has confirmed the site is under continued investigation by the [Fine Arts Department](/source/Fine_Arts_Department). If further research verifies early historical connections, the discovery could significantly reshape the understanding of [Thonburi’s](/source/Thonburi) and [Bangkok’s](/source/Bangkok) origins.[50]

## Rolling stock

The tender for operation of the line and purchase of rolling stock for both the eastern and western sections was issued in May 2022, along with the construction of the western section.[51] However, it was delayed due to the ongoing litigation regarding the western extension, and the tender was suspended. In July 2024, it was announced at the signing ceremony of the joint investment contract for the Orange Line that they planned to have 32 electric trains, each with three carriages.[52]

In October 2024, [BEM](/source/Bangkok_Expressway_and_Metro) has concluded its selection by choosing [Siemens](/source/Siemens) as the manufacturer for the Orange Line trains.[53] The turnkey contract was announced on December 18, 2024. A consortium consisting of Siemens, [Bozankaya](/source/Bozankaya), and [ST Engineering Thailand](/source/ST_Engineering) won a contract from Ch. Karnchang. The contract includes the supply of 32 [Siemens](/source/Siemens) three-car trains, with the configuration and design same as the EMU-BLE fleet used on the [MRT Blue Line](/source/MRT_Blue_Line) in Bangkok. These trains will be manufactured at the Bozankaya Factory in Ankara, [Turkey](/source/Turkey). Siemens and ST Engineering will supply the bogies, traction, braking, auxiliary systems, and SCADA system for the project, and will be responsible for project management, development, construction, and commissioning. Siemens will also provide service and maintenance for 10 years.[54]

## Stations

Further information: [List of rapid transit stations in Bangkok](/source/List_of_rapid_transit_stations_in_Bangkok)

Code Station Name Opened Platform Type Position Park & Ride Transfer Notes English Thai Taling Chan - Bang Khun Non: 4.54 km (Future) OR01 Taling Chan ตลิ่งชัน TBA Island Underground - Connecting station to; • BTS (1 km walking distance; future)• SRT • SRT Southern Line Appeared on the 2022 Final Reports.[55] Bang Khun Non - Thailand Cultural Centre: 13.2 km (Under construction) OR02 Bang Khun Non บางขุนนนท์ November 2030; 4 years' time (2030-11) Island Underground - Connecting station to; • MRT • SRT (future) OR03 Siriraj ศิริราช Stacked - Connecting station with SRT (future) Exit to Siriraj Hospital. OR04 Sanam Luang สนามหลวง Island - Exit to: • Sanam Luang • The Grand Palace • Khaosan Road • National Theatre OR05 Democracy Monument อนุสาวรีย์ประชาธิปไตย Island - Interchange station to MRT (under construction) Exit to: • Mahakan fort • Rattanakosin Exhibition Hall • Queen Sirikit Gallery • Royal Pavilion Mahajetsadabadin • Wat Saket. OR06 Lan Luang หลานหลวง Island - OR07 Yommarat ยมราช Island - Connecting station to SRT (future) OR08 Ratchathewi ราชเทวี Island - Connecting station to BTS OR09 Pratunam ประตูน้ำ Stacked - Exit to: • Embassy of Indonesia • Pratunam • Platinum Fashion Mall. OR10 Ratchaprarop ราชปรารภ Stacked - Connecting station to • ARL • SRT (future) • SRT Eastern Line Exit to: • Pratunam Market • Indra Square • Baiyoke Tower. The station site has been moved 300 meters north to replace Rangnam station.[55] OR11 Din Daeng ดินแดง Island - Exit to Bangkok City Hall 2. OR12 Pracha Songkhro ประชาสงเคราะห์ Side - Connecting station to MRL (future) Thailand Cultural Centre - Yaek Rom Klao: 21.04 km (Structure Complete) OR13 Thailand Cultural Centre ศูนย์วัฒนธรรมแห่งประเทศไทย May 2028; 1 year's time (2028-05) Side Underground √ Interchange station to MRT Exit to: • The One Ratchada Market • Esplanade Ratchada • The Street Ratchada • China Cultural Centre • Thailand Cultural Centre. OR14 MRTA รฟม. Island - Exit to Royal City Avenue (RCA). OR15 Wat Phra Ram 9 วัดพระราม 9 Stacked - Connecting station to MRL (future) Formerly Pradit Manutham. OR16 Ramkhamhaeng 12 รามคำแหง 12 Stacked - Exit to The Mall Ramkhamhaeng. OR17 Ramkhamhaeng University มหาวิทยาลัยรามคำแหง Stacked - Exit to Ramkhamhaeng University. Formerly Ramkhamhaeng. OR18 SAT กกท. Island - Exit to: • Hua Mak Sports Complex (which includes the head office of SAT (Sports Authority of Thailand), Rajamangala Stadium and Indoor Stadium Huamark) OR19 Ramkhamhaeng 40 รามคำแหง 40 Island - Formerly Hua Mak and Ramkhamhaeng 34.[56] OR20 Yaek Lam Sali แยกลำสาลี Island - Connecting station to; • MRT • MRT (future) Formerly Lam Sali. OR21 Si Burapha ศรีบูรพา Island - OR22 Khlong Ban Ma คลองบ้านม้า Side √ OR23 Sammakorn สัมมากร Side Elevated - OR24 Nom Klao น้อมเกล้า Side - OR25 Rat Phatthana ราษฎร์พัฒนา Side - OR26 Min Phatthana มีนพัฒนา Side - OR27 Kheha Ramkhamhaeng เคหะรามคำแหง Side - OR28 Min Buri มีนบุรี Side √ Interchange station with MRT OR29 Yaek Rom Klao แยกร่มเกล้า Side - Formerly Suwinthawong.

Note: In February 2020, the MRTA changed the names of 3 stations OR19, OR20, and OR29.[57]

## Route Map

## Incidents

On 19 May 2025, a 50-year-old construction worker died after falling into a 19-metre-deep excavation shaft at the Lan Luang Station construction site in Bangkok. His body was recovered on 24 May, following five days of continuous search and recovery operations. The incident prompted an official investigation by the Mass Rapid Transit Authority of Thailand (MRTA) and reignited public concern over occupational safety and regulatory oversight on large-scale infrastructure projects.[58][59][60]

## Network Map

## See also

- [Mass Rapid Transit Master Plan in Bangkok Metropolitan Region](/source/Mass_Rapid_Transit_Master_Plan_in_Bangkok_Metropolitan_Region)

- [MRT (Bangkok)](/source/MRT_(Bangkok))

- [MRT Blue Line](/source/MRT_Blue_Line)

- [MRT Brown Line](/source/MRT_Brown_Line)

- [MRT Grey Line](/source/MRT_Grey_Line)

- [MRT Light Blue Line](/source/MRT_Light_Blue_Line)

- [MRT Pink Line](/source/MRT_Pink_Line)

- [MRT Purple Line](/source/MRT_Purple_Line)

- [MRT Yellow Line](/source/MRT_Yellow_Line)

- [BTS Skytrain](/source/BTS_Skytrain)

- [Sukhumvit Line](/source/Sukhumvit_Line)

- [Silom Line](/source/Silom_Line)

- [Airport Rail Link (Bangkok)](/source/Airport_Rail_Link_(Bangkok))

- [SRT Dark Red Line](/source/SRT_Dark_Red_Line)

- [SRT Light Red Line](/source/SRT_Light_Red_Line)

- [Bangkok BRT](/source/Bangkok_BRT)

- [BMA Gold Line](/source/Gold_Line_(Bangkok))

- [BMA Bang Na-Airport Line](/source/Bang_Na%E2%80%93Suvarnabhumi_light_rail)

## References

1. ^ [***a***](#cite_ref-railwaygazette_1-0) [***b***](#cite_ref-railwaygazette_1-1) [***c***](#cite_ref-railwaygazette_1-2) [***d***](#cite_ref-railwaygazette_1-3) ["Thai metro rolling stock and signalling contracts let"](https://www.railwaygazette.com/metros/thai-metro-rolling-stock-and-signalling-contracts-let/68189.article). *Railway Gazette*. 2024-12-15. Retrieved 2025-01-28.

1. **[^](#cite_ref-2)** ["Six contracts signed for construction of B79.2bn Orange Line"](https://www.bangkokpost.com/thailand/general/1195629/six-contracts-signed-for-construction-of-b79-2bn-orange-line). *[Bangkok Post](/source/Bangkok_Post)*. 9 February 2017. Retrieved 12 February 2017.

1. **[^](#cite_ref-3)** Mokkhasen, Sasiwan (5 July 2017). ["MRT Orange Line construction to begin Monday"](https://www.khaosodenglish.com/featured/2017/07/05/mrt-orange-line-construction-begin-monday/). *[Khaosod](/source/Khaosod) English*. Thailand. Retrieved 20 November 2021.

1. ^ [***a***](#cite_ref-The_MRT_Orange_Line_East_Section_4-0) [***b***](#cite_ref-The_MRT_Orange_Line_East_Section_4-1) ["The MRT Orange Line (East Section)"](https://www.mrta-orangelineeast.com/en/home_progress). *mrta-orangelineeast.com*. Retrieved 2024-10-28.

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1. ^ [***a***](#cite_ref-bangkokpost.com_21-0) [***b***](#cite_ref-bangkokpost.com_21-1) Wancharoen, Supoj (9 September 2022). ["BEM wins bid for Orange Line project"](https://www.bangkokpost.com/business/2387481/bem-wins-bid-for-orange-line-project). *Bangkok Post*.

1. **[^](#cite_ref-22)** May, Tiana (2024-11-05). ["AECOM to Design Bangkok's MRT Orange Line West"](https://railway-news.com/aecom-to-design-bangkoks-mrt-orange-line-west/). *Railway-News*. Retrieved 2024-12-20.

1. **[^](#cite_ref-23)** Quirke, Joe (2024-12-10). ["Egis-led team wins role on Bangkok's new Orange Line"](https://www.globalconstructionreview.com/egis-led-team-wins-role-on-bangkoks-new-orange-line/). *Global Construction Review*. Retrieved 2024-12-20.

1. **[^](#cite_ref-24)** Co, Dorsch Consult asia. ["Dorsch Gruppe: MRT Line Taling Chan - Min Buri, Bangkok: Dorsch Global DC Asia"](https://dc-asia.dorsch.de/projects/detail/project/mrt-orange-line). *dc-asia.dorsch.de*. Retrieved 2024-12-20.

1. **[^](#cite_ref-25)** ["MRT Orange Line contracts signed"](https://web.archive.org/web/20170816192822/http://englishnews.thaipbs.or.th/construction-orange-line-contracts-signed/). *Thai PBS*. 9 February 2017. Archived from [the original](http://englishnews.thaipbs.or.th/construction-orange-line-contracts-signed) on 16 August 2017. Retrieved 17 July 2017.

1. **[^](#cite_ref-26)** ["Lane closures for Orange line start in Ramkhamhaeng"](http://www.bangkokpost.com/news/transport/1287118/lane-closures-for-orange-line-start-in-ramkhamhaeng). *Bangkok Post*. 9 February 2017.

1. **[^](#cite_ref-27)** ["MRT Orange Line construction update December 2017 2023"](https://web.archive.org/web/20210828112816/https://www.mrta.co.th/th/news/information/%E0%B8%84%E0%B8%A7%E0%B8%B2%E0%B8%A1%E0%B8%81-%E0%B8%B2%E0%B8%A7%E0%B8%AB%E0%B8%99-%E0%B8%B2%E0%B8%81%E0%B8%B2%E0%B8%A3%E0%B8%81-%E0%B8%AD%E0%B8%AA%E0%B8%A3-%E0%B8%B2%E0%B8%87%E0%B8%A3%E0%B8%96%E0%B9%84%E0%B8%9F%E0%B8%9F-%E0%B8%B2-%E0%B8%93-31-%E0%B8%98-%E0%B8%99%E0%B8%A7%E0%B8%B2%E0%B8%84%E0%B8%A1-2560/). *MRTA PR*. 7 January 2018. Archived from [the original](https://www.mrta.co.th/th/news/information/%E0%B8%84%E0%B8%A7%E0%B8%B2%E0%B8%A1%E0%B8%81-%E0%B8%B2%E0%B8%A7%E0%B8%AB%E0%B8%99-%E0%B8%B2%E0%B8%81%E0%B8%B2%E0%B8%A3%E0%B8%81-%E0%B8%AD%E0%B8%AA%E0%B8%A3-%E0%B8%B2%E0%B8%87%E0%B8%A3%E0%B8%96%E0%B9%84%E0%B8%9F%E0%B8%9F-%E0%B8%B2-%E0%B8%93-31-%E0%B8%98-%E0%B8%99%E0%B8%A7%E0%B8%B2%E0%B8%84%E0%B8%A1-2560/) on 28 August 2021. Retrieved 21 January 2018.

1. **[^](#cite_ref-28)** ["MRT Orange Line construction update October 2018"](https://www.facebook.com/MRTA.PR/photos/a.1433440196872710/2109998672550189/). *MRTA PR*. 12 October 2018.

1. **[^](#cite_ref-29)** ["การรถไฟฟ้าขนส่งมวลชนแห่งประเทศไทย on Facebook"](https://ghostarchive.org/iarchive/facebook/1409174012632662/2214355752114480). *[Facebook](/source/Facebook)*. Archived from [the original](https://www.facebook.com/MRTA.PR/photos/a.1433440196872710/2214355752114480) on 2022-04-30.*MRTA Press*

1. **[^](#cite_ref-30)** ["MRT Orange Line construction update August 2019"](https://www.facebook.com/MRTOrangeLineEast/photos/pcb.642832046196150/642831682862853). *MRTA PR*. 9 August 2019.

1. **[^](#cite_ref-31)** ["MRT Orange Line construction update October 2019"](https://www.facebook.com/MRTOrangeLineEast/photos/pcb.642832046196150/642831682862853). *MRTA PR*. 10 November 2019.

1. **[^](#cite_ref-32)** ["MRT Orange Line construction update February 2020"](https://www.facebook.com/MRTA.PR/photos/a.1409211292628934/2436659376550782). *MRTA PR*. 7 February 2020.

1. **[^](#cite_ref-33)** ["MRT Orange Line construction update June 2020 2023"](https://www.facebook.com/MRTOrangeLineEast/photos/pcb.868116043667748/868111270334892). *MRTA PR*. 5 June 2020.

1. **[^](#cite_ref-34)** ["MRT Orange Line tunneling completed"](https://www.facebook.com/watch/?v=262457361675721). *MAA Consultants Co Ltd*. 6 October 2020.

1. **[^](#cite_ref-35)** ["MRT Orange Line construction update October 2020"](https://www.facebook.com/MRTA.PR/photos/pcb.2627818000768251/2627816464101738). *MRTA PR*. 8 October 2020.

1. **[^](#cite_ref-36)** ["MRT Orange Line construction update February 2021"](https://www.facebook.com/MRTA.PR/photos/pcb.2627818000768251/2627816464101738). *MRTA PR*. 8 February 2021.

1. **[^](#cite_ref-37)** ["MRT Orange Line construction update May 2021"](https://www.facebook.com/MRTA.PR/photos/pcb.2781073708776012/2781073418776041). *MRTA PR*. 7 May 2021.

1. **[^](#cite_ref-38)** ["MRT Orange Line construction update November 2021"](https://www.facebook.com/MRTA.PR/photos/pcb.2843740849175964/2843724672510915/). *MRTA PR*. 6 November 2021.

1. **[^](#cite_ref-39)** ["MRT Orange Line construction update April 2022"](https://www.facebook.com/MRTOrangeLineEast/photos/a.258445614634797/1317224515423563). *MRTA PR*. 8 April 2022.

1. **[^](#cite_ref-40)** ["MRT Orange Line construction update June 2022"](https://www.facebook.com/MRTOrangeLineEast/photos/a.258445614634797/1357270614752286). *MRTA PR*. 8 June 2022.

1. **[^](#cite_ref-41)** ["MRTA Orange Line East Construction Progress"](https://www.facebook.com/MRTOrangeLineEast/posts/pfbid014QTa9Qww4Y1tfWgkCprPraGnsA5iQNdVAAzn6eEWmPe8TsRnWyPisw1tPA27tNkl). *[Facebook](/source/Facebook)*. Retrieved 5 April 2023.

1. **[^](#cite_ref-42)** ["B385bn Rail Projects expected to go ahead"](http://www.bangkokpost.com/archive/b358bn-rail-projects-expected-to-go-ahead/1256406). *Bangkok Post*. 26 May 2017.

1. **[^](#cite_ref-43)** ["Ministry mulls Orange Line cost transfer"](http://www.bangkokpost.com/news/transport/1306055/ministry-mulls-orange-line-cost-transfer). *Bangkok Post*. 15 August 2017.

1. **[^](#cite_ref-44)** Hongtong, Thodsapol (7 May 2019). ["B230bn for Orange Line"](https://www.bangkokpost.com/business/tourism-and-transport/1673080/b230bn-for-orange-line). *Bangkok Post*.

1. **[^](#cite_ref-tangled_45-0)** Theparat, Chatrudee (30 October 2020). ["Tangled lines"](https://www.bangkokpost.com/property/2011035/tangled-lines). *Bangkok Post*. Bangkok Post. Retrieved 31 October 2020.

1. **[^](#cite_ref-46)** Theparat, Chatrudee (29 January 2020). ["MRT extension approved"](https://www.bangkokpost.com/business/1845704/mrt-extension-approved). *Bangkok Post*.

1. **[^](#cite_ref-47)** ["ศาลอาญาคดีทุจริตรับคำฟ้อง!! "บีทีเอสร้องรถไฟฟ้าสีส้ม""](https://www.facebook.com/TransportDailynews/posts/3031000807121417). *Daily News*. 25 October 2021.

1. **[^](#cite_ref-48)** ["สายสีส้มลากยาว ดันต้นทุนก่อสร้างพุ่ง"](https://www.thansettakij.com/content/Macro_econ/479779). *Thansettakij News*. 16 May 2021.

1. **[^](#cite_ref-49)** ["รฟม.-BEM ลงนามก่อสร้างสายสีส้มตะวันตก 'สุริยะ' สั่งเดินรถช่วงมีนบุรี ภายในปี'71 – ราคา 20บ.ตลอดสาย"](https://www.matichon.co.th/economy/news_4688018). *Matichon Online*. 18 July 2024.

1. **[^](#cite_ref-50)** Reporters, Post (2025-04-04). ["Old bones at MRT station site hint at ancient executions"](https://www.bangkokpost.com/thailand/general/2995977/old-bones-at-mrt-station-site-hint-at-ancient-executions). *Bangkok Post*. Retrieved 2025-04-09.

1. **[^](#cite_ref-51)** ["เปิดทีโออาร์ สายสีส้ม "เข้มสเปก" ซองเทคนิค BTS-BEM พร้อมสู้ศึกประมูล"](https://web.archive.org/web/20220627215405/https://www.bangkokbiznews.com/business/1006463). *กรุงเทพธุรกิจ*. Archived from [the original](https://www.bangkokbiznews.com/business/1006463) on 2022-06-27. Retrieved 27 June 2022.

1. **[^](#cite_ref-52)** Siripanjana, Maneerat. ["วันนี้ที่รอคอย! ลงนามร่วมทุน "สายสีส้ม" เร่งเปิดเดินรถปลายปี 70 ของขวัญปีใหม่ประชาชน"](https://www.dailynews.co.th/news/3658119/). *เดลินิวส์* (in Thai). Retrieved 2024-07-18.

1. **[^](#cite_ref-53)** จิราสิต, จิรา. ["BEMเลือก"ซีเมนส์"ผลิตรถไฟฟ้าสายสีส้ม32 ขบวนทยอยนำมา16ขบวนบริการปลายปี70"](https://www.dailynews.co.th/news/4017781/?fbclid=IwY2xjawGMZBNleHRuA2FlbQIxMAABHUBSj5kh7ZFAnx3v-Z65xb-muzX6kYZermbPsnZp55rz_CpL6p3xSKzmIg_aem_EoBbaz5gjP1Qp1uNXfsYpg). *เดลินิวส์* (in Thai). Retrieved 2024-10-28.

1. **[^](#cite_ref-54)** ["Siemens Mobility and Consortium Partners Secure Important Rail Contracts in Thailand to Transform Public Transportation"](https://press.siemens.com/global/en/pressrelease/siemens-mobility-and-consortium-partners-secure-important-rail-contracts-thailand). *Siemens Mobility*. Retrieved 2024-12-18.

1. ^ [***a***](#cite_ref-:0_55-0) [***b***](#cite_ref-:0_55-1) ["MRT Orange Line western section final reports"](https://www.mrta.co.th/storage/content/uploads/1677663955%E0%B8%A3%E0%B8%B2%E0%B8%A2%E0%B8%87%E0%B8%B2%E0%B8%99%E0%B8%89%E0%B8%9A-%E0%B8%9A%E0%B8%AA%E0%B8%A1%E0%B8%9A-%E0%B8%A3%E0%B8%93-%E0%B8%89%E0%B8%9A-%E0%B8%9A%E0%B8%AB%E0%B8%A5-%E0%B8%81-%E0%B8%9B%E0%B8%81%E0%B8%9B-%E0%B8%94.pdf) (PDF).

1. **[^](#cite_ref-LivingpopOrange_56-0)** ["แผนที่สถานีรถไฟฟ้า MRT "สายสีส้ม" ตะวันออก-ตะวันตก พร้อมอัปเดตสถานะการก่อสร้างล่าสุด!"](https://www.livingpop.com/mrt-orange-line-info-and-update/) (in Thai). 12 July 2025. Retrieved 7 August 2025.

1. **[^](#cite_ref-57)** ["รฟม. สั่งเปลี่ยนชื่อ สถานีรถไฟฟ้า 4 สาย หวังให้ประชาชนจำง่ายขึ้น"](https://www.khaosod.co.th/special-stories/news_3617443). *Khaosod Online*. 21 February 2020.

1. **[^](#cite_ref-58)** ["MRTA clarifies worker falling into 19-metre-deep hole at Orange Line site"](https://www.nationthailand.com/thailand/bangkok/40050199). *nationthailand*. 2025-05-20. Retrieved 2025-05-24.

1. **[^](#cite_ref-59)** ["คนงานพลัด 'ตกหลุม' ก่อสร้าง รถไฟฟ้าสายสีส้ม สถานีหลานหลวง ลึก 19 เมตร"](https://thestandard.co/worker-falls-19m-orange-line-pit/). *THE STANDARD* (in Thai). 2025-05-19. Retrieved 2025-05-24.

1. **[^](#cite_ref-60)** ["พบแล้ว ร่างคนงานตกหลุมเสาเข็ม ไซต์รฟฟ.หลานหลวง เตรียมใช้เครน พร้อมโรยตัวกู้ร่าง"](https://www.honekrasae.com/content/yzxWPuwm9UvR0pXAW4yq?force=1&fbclid=IwY2xjawKencJleHRuA2FlbQIxMABicmlkETFGbHVSdUR1eUROMUVNd1F2AR7jfdxYlV9yxtP4whpwNMJIiq8XyLxw2M_TYfO7JNfNA3-_7E_w3bWChhW1Kg_aem_9jXZX4_NKagUBpt3EBDeTQ). *มาร่วมตีแผ่กระแสข่าวที่แรงที่สุดในสังคม* (in Thai). Retrieved 2025-05-24.

## External links

Wikimedia Commons has media related to [MRT Orange Line](https://commons.wikimedia.org/wiki/Category:MRT_Orange_Line).

- ["MRT Orange Line Eastern Section"](https://mrta-orangelineeast.com/en/home)

- [Airport Rail Link, BTS, MRT & BRT network map](https://www.bts.co.th/eng/routemap.html)

- [MRTA](https://www.mrta.co.th/th/)

v t e Bangkok Metropolitan Mass Rapid Transit stations

v t e Public transport systems in Bangkok Metropolitan Region Transport in Bangkok List of rapid transit stations in Bangkok Rail transport in Bangkok Mass Rapid Transit Master Plan in Bangkok Metropolitan Region Railways Inter-city rail and High-speed rail Open State Railway of Thailand Northern Line Northeastern Line Southern Line Eastern Line Maeklong Railway Under construction Eastern HSR (2029) Northeastern HSR (2026) Planned Northern HSR Southern HSR Commuter rail SRT SRT ARL State Railway of Thailand Lopburi Kaeng Khoi Prachinburi Ratchaburi Suphan Buri Rapid transit BTS BTS MRT MRT MRT (under construction, 2028) Monorail MRT MRT MRT (planned) MRL (planned) MRL (planned) People mover BTS Suvarnabhumi APM Don Mueang APM (planned) Light rail and Tram BTS (planned) Trams in Bangkok (defunct) Main stations Krung Thep Aphiwat (Bang Sue) Bangkok (Hua Lamphong) Makkasan Roads Expressways Chaloem Maha Nakhon Si Rat Chalong Rat Burapha Withi Udon Ratthaya Prachim Ratthaya Uttaraphimuk S1 Kanchanaphisek Rama III–Dao Khanong–Western Outer Ring Road (under construction, 2025) Motorways Open () () Under construction (2025) (2025) (2025) Planned National highways () () () () Buses Operators and Routes Bangkok BRT BMTA Thai Smile Bus Bus Line 8 (Bangkok) Terminals Ekkamai Bus Terminal Mo Chit 2 Bus Terminal Old Mo Chit Bus Terminal New Southern Bus Terminal Water transport River Chao Phraya Express Boat OrangeFlag YellowFlag Thai Smile Boat Canals Khlong Saen Saep boat service Khlong Phadung Krung Kasem boat service Khlong Phasi Charoen boat service

v t e Urban rail transit in Southeast Asia Annual Riderships by cities 1 billion or more Singapore 500 million – 999 million Bangkok 100 million – 499 million Jakarta Kuala Lumpur Metro Manila 50 million – 99 million — 10 million – 49 million Hanoi Ho Chi Minh City Bandung Surabaya Yogyakarta (Surakarta) 5 million – 9.9 million Seberang Perai (Ipoh) 1 million – 4.9 million Palembang Cilegon (Serang) Medan Johor Bahru Yangon Padang Indonesia Java Greater Jakarta Integrated Mass Transit System Greater Jakarta Commuter Jakarta MRT M2 2B Jakarta LRT 3 Jabodebek LRT Bogor Grogol Senayan SHIA Skytrain SHIA ARS Merak Commuter Whoosh HSR KCJB Feeder KCJB Greater Bandung Commuter Bandung Walahar Garut Yogyakarta-Solo Commuter Adisumarmo ARS YIA ARS Surakarta Railbus Greater Semarang Commuter Greater Surabaya Commuter Sumatra Aceh Commuter Palembang LRT Kualanamu ARS A Greater Medan Commuter Minangkabau Express Padang Commuter Medan LRT Batang Kuis Lau Cih Cemara Lesser Sunda Islands Bali Urban Subway Cemagi Nusa Dua Sanur Ubud Laos Boten–Vientiane railway Malaysia Peninsular Malaysia Klang Valley Integrated Transit System 1 2 3 4 5 6 7 8 9 10 11 12 13 KLIA Aerotrain KTM ETS KTM Intercity RTS ECR KTM Komuter Northern Sector 1 2 KTM Komuter Southern Sector 1 2 Penang LRT MTL TTL Penang Hill Railway Johor Bahru ART TBL SKL IPL East Malaysia Kota Kinabalu LRT Monorail Kuching ART SM SR DM Myanmar Yangon Circular Railway Mandalay Circular Railway Yangon Urban Mass Rapid Transit Philippines Luzon Greater Capital Region Railway System Manila LRT Line 1 Line 2 Line 6 Manila MRT Line 3 Line 4 Line 5 (cancelled) Line 7 Line 8 Line 9 Line 10 Line 11 Philippine National Railways Metro Commuter NSCR NECL North Main Line South Main Line SkyTrain Visayas Cebu Monorail Cebu Urban Mass Rapid Transit Mindanao Davao People Mover Singapore Singapore MRT NSL EWL NEL CCL DTL TEL JRL CRL Singapore LRT BPLRT SKLRT PGLRT Changi Airport Skytrain Sentosa Express KTM Shuttle Tebrau RTS Thailand Bangkok Metropolitan Mass Rapid Transit Master Plan BTS Silom Sukhumvit Gold MRT Blue Purple Yellow Pink Orange Brown Grey Light Blue Silver Asia Era One ARL Red Lines Light Red Dark Red APM Suvarnabhumi Don Mueang Utapao HSR Eastern Northeastern Northern Southern Provincial Chiang Mai LRT Hat Yai Monorail Khon Kaen LRT Nakhon Ratchasima LRT Pattaya Monorail Phitsanulok Tram Phuket Island LRT Vietnam Hanoi Metro Line 2A Line 3 Ho Chi Minh City Metro 1 Line 1 North-South HSR Note: Under construction & planned lines are in Italics

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Adapted from the Wikipedia article [Orange Line (Bangkok)](https://en.wikipedia.org/wiki/Orange_Line_(Bangkok)) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/Orange_Line_(Bangkok)?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.