MRTA Pink Line

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Pink Line
TypeStraddle-beam Monorail
SystemMetropolitan Rapid Transit
StatusUnder Construction
LocaleNonthaburi and Bangkok, Thailand
TerminiKhae Rai
Min Buri
Opened2022 (est.)
OwnerMass Rapid Transit Authority of Thailand
Operator(s)Northern Bangkok Monorail Company Limited
Depot(s)Min Buri
Rolling stockBombardier INNOVIA Monorail 300
4 cars per trainset
Line length34.5 kilometers (21.4 mi) (est.)
Number of tracks2 monorail tracks
ElectrificationThird rail
Operating speed80 km/h (50 mph)
Route map
Nonthaburi Civic Center
 MRT  (planned)
Khae Rai
Sanambin Nam
Royal Irrigation Department
Pak Kret
Pak Kret Bypass
Chaeng Wattana-Pak Kret 28
Muang Thong Thani
Si Rat
Impact Challenger
Mueang Thong Lake (Impact Forum)
Chaeng Wattana 14
Government Complex
Lak Si
 SRT : Left arrow Bangsue - Rangsit Right arrow
Rajabhat Phranakhon
 BTS : Left arrow Kheha - Khu Khot Right arrow
Wat Phra Si Maha That
BSicon exBOOT.svg
Ram Inthra 3
Lat Pla Khao
Ram Inthra 31
 MRL : Left arrow Tha Phra
VacharaphonBSicon exTRAM.svg
Ram Inthra 40
Khu Bon
Ram Inthra 83
East Outer Ring Road
Nopparat Rajathanee
Bang Chan
Min Buri Market
Min Buri
BSicon exTRAM.svg
 MRT :Left arrow Bang Khun Non - Suwinthawong Right arrow

The MRTA Pink Line is an elevated mass rapid transit line currently under construction in Bangkok and Nonthaburi Province, Thailand.

The monorail will be 34.5 km long with 30 stations. It will run in the northern part of the city from east Bangkok in Minburi , Bangkok along Ram Inthra Road to northwest Bangkok (Pak Kret District, Nonthaburi Province), Chaeng Watthana Road and Tiwanon Road ending at the Nonthaburi Civic Center. At the terminus there will be an interchange with MRT Purple Line and the proposed MRT Brown Line which is currently under evaluation. A short spur line to Impact, Muang Thong Thani from Si Rat station has also been proposed. The BSR joint venture won the bid to construct and operate the MRTA Pink Line.

The line will also transfer with the SRT Dark Red Line which is under construction, the BTS Sukhumvit Line extension to Khu Khot (under construction), the planned BMA Grey Line in the future and interchange with the MRT Orange Line which is under construction. As such, it will be an important cross city link in the northern area of Bangkok & Nonthaburi linking 5 lines along a major transport corridor. The line is scheduled to open in 2022.

Construction commenced in December 2017. At the end of March 2019, construction has progressed to 32.12%[1]

The BSR joint venture has also proposed a 2.8km spur monorail route to link to Impact, Muang Thong Thani from Si Rat station which is under consideration by the MRTA.[2]


The Pink Line was originally intended to be a heavy rail line but this was changed to dual-track monorail in 2008 on the basis that construction costs would be cheaper. The director-general of the Office of Transport and Traffic Policy and Planning had previously stated in an interview that the Pink Line was considered a priority scheme to be completed by 2017-18, as it ran past the then recently opened Government Complex.[3] A review in early 2012 was undertaken to consider the heavy rail option again. However, it was decided to proceed with the monorail plan on the basis that the overall cost would be cheaper than heavy rail. The review of the line also resulted in the addition of 6 extra stations. The environmental impact assessment for the Pink Line was finalised in late 2012. In late 2012, a request to extend the planned line east by 3.4 km from the Minburi terminus along Suwinthawongse Road to Nong Chok was submitted.[4] However, this was not implemented. The expected cost of the line in 2012 with the additional 6 extra stations was 55 billion baht.[5]

The MRTA Pink line was then due to be tendered in the 3rd quarter of 2013 with construction due to commence in early 2014.[6] However, delays in preparation of the tender in relation to the selection of monorail rolling stock and subsequent political protests resulting in a snap national election in early Feb 2014, further delayed the Pink Line tender.[7] A subsequent coup in May 2014 resulted in a new military administration and the tender being deferred for 2014. The MRTA tender was subsequently not released until mid-2016 as a PPP tender.

In early December 2016, BSR Joint Venture (comprising BTS Group Holdings which owns 75%, Sino-Thai Engineering and Construction - STEC, and Ratchaburi Electricity Generation Holding - RATCH), won the bid for the project and a 30 year concession to operate the line. The BSR also won the bid for the Yellow Line project. [8]

On 16 June 2017, the MRT Pink Line project contracts were signed with the BSR consortium by the Mass Rapid Transit Authority of Thailand with a scheduled operational date of 2022. [9] The BSR has established Northern Bangkok Monorail Company Limited to operate the monorail.

Construction Progress[edit]

Construction of the MRT Pink Line began in December 2017 with the BSR consortium establishing a number of preparation work sites along the Chaeng Wattana rd/Ram Inthra rd corridor with the closure of lanes along this busy east-west corridor. [10] By 30 September 2018, overall construction had progressed to 10.37% [11] Construction work on Tiwanon Rd. Nonthaburi began at the end of October 2018 closing long stretches of the middle lanes between Khae Rai and Pak Kret intersections.

At the end of March 2019, construction has progressed to 31.46%[12]

Rolling stock[edit]

BSR has selected Bombardier INNOVIA 300 monorail rolling stock for the Pink line.[13] The BSR has announced that they will purchase 42, 4 car sets to operate the Pink line.[14]

Proposed Spur line to Muang Thong Thani[edit]

In 2016, Bangkok Mass Transit System PLC. (BTSC) received a fund for an extension to link Impact, Muang Thong Thani and the Muang Thong Thani condominium buildings, from Bangkok Land Public Company Limited (SETBLAND). Accordingly, the BSR joint venture has proposed a 2.8km spur monorail route to link to Impact, Muang Thong Thani from Si Rat station. [15] This spur line will have two stations, the first will located behind Impact Challenger building and the second will be located near Muang Thong Thani Lake and Impact Forum in Pak Kred, Nonthaburi. The spur line is under consideration by the MRTA which is evaluating the proposal.

In early August a second public hearing was conducted by the MRTA into the extension proposal. [16] The proposal has received a positive response by the public. If the proposal is approved by Cabinet, construction could commence in 2019. The MRTA may also consider a further 2km extension from Muang Thong Thani to Tiwanon rd.[17]

List of planned stations[edit]

Originally, the line was to have 24 stations, 4 of which will be transfer stations and 2 of which will be "park & ride" stations. However, 6 new stations were added in mid-2012 for a total of 30 stations.

The line will also have 2 additional service stations for train maintenance.

Code Name[18] No. of Platform Transfer(s) Province
PK01 Nonthaburi Civic Center 4  MRT   MRT  (approved) Nonthaburi
PK02 Khae Rai 2
PK03 Sanambin Nam 2
PK04 Samakkhi 2
PK05 Royal Irrigation Department 2
PK06 Yeak Pak Kret 2
PK07 Pak Kret Bypass 2
PK08 Chaeng Wattana-Pak Kret 28 2
PK09 Muang Thong Thani 2
PK10 Si Rat 4  MRL  Impact Link
PK11 Chaeng Watthana 14 2 Bangkok
PK12 Government Complex 2
PK13 TOT 2
PK14 Lak Si 4  SRT  (under construction) ARLbangkok.svg  ARL  (under tender)
PK15 Rajabhat Phranakhon 2
PK16 Wat Phra Si Mahathat 4  BTS  (under construction)
PK17 Ram Inthra 3 2
PK18 Lat Pla Khao 2
PK19 Ram Inthra Km.4 2
PK20 Maiyalap 2
PK21 Vatcharaphon 4  MRL  (proposed)
PK22 Ram Inthra Km.6 2
PK23 Khu Bon 2
PK24 Synphaet 2
PK25 East Outer Ring Road 2
PK26 Nopparat 2
PK27 Bang Chan 2
PK28 Setthabutbamphen 2
PK29 Min Buri Market 2
PK30 Min Buri 4  MRT  (under construction)
Impact Link (Proposed spur line)
PK10 Si Rat 2  MRL  Main Line Nonthaburi
PKS01 Impact Challenger 2
PKS02 Mueang Thong Lake 2

See also[edit]


  1. ^ MRTA Press, 12 April 2019
  2. ^ "Junta to call bids for most infra projects - The Nation". The Nation. Retrieved 2017-06-17.
  3. ^ "Mrt pink line route takes step forward" Bangkok Post 5 April 2010
  4. ^ 'ชาวบ้านรวมตัวเรียกร้อง เพิ่มปลายทางสุวินทวงศ์' Archived 2014-07-27 at the Wayback Machine, Ban Muang News, 24 Oct 2012.
  5. ^ 'รฟม.แบ่งเค้กรถไฟฟ้า2สายลงตัว "สีเขียว-ชมพู"ลงทุนร่วมแสนล้าน', Prachachat News, 6 Nov 2012.
  6. ^ "Cabinet to mull rail projects" Bangkok Post, 26 February 2013
  7. ^ ""Archived copy". Archived from the original on 2013-12-16. Retrieved 2014-07-18.CS1 maint: Archived copy as title (link)"
  8. ^ "BSR Joint venture wins rights for Bangkok's Yellow, Pink line MRTA construction". Bangkok Post. 7 December 2016.
  9. ^ "Pink and Yellow Lines construction contracts signed, operational in 2020". Thai PBS. 17 June 2017.
  10. ^ "Jams expected as monorail build begins". Bangkok Post. 21 November 2017.
  11. ^ MRTA Press, 12 October 2018
  12. ^ MRTA Press, 12 April 2019
  13. ^
  14. ^
  15. ^ "Junta to call bids for most infra projects - The Nation". The Nation. Retrieved 2017-06-17.
  16. ^ประช-มร-บฟ-งความค-ดเห-น-คร-งท-2-ส-วนต-อขยาย-โครงการรถไฟฟ-าสายส-ชมพ-ฯ-สถาน-ศร-ร-ช-เม-องทองธาน/
  17. ^ "Pink Line could stretch further". Bangkok Post. 6 August 2018.
  18. ^ "Pink line Route".

External links[edit]