Current extension under construction
Bang Wa MRT Station in June 2016 (under construction)
Viaduct across Ratchaphruek Road east of Bang Wa Station in June 2016 (under construction)
The 27 km Blue Line extension will form a quasi circle line (loop). It consists of 19 stations (4 underground stations and 15 elevated stations). (The current terminus at Bang Sue is being extended 1.2 km to Tao Poon as part of the Purple Line project).
From Tao Poon the line will run elevated west along Pracha Rat Sai 2 rd, cross the Chao Praya river and then run south along the Ratchadapisek inner ring road (Charan Sanit Wong rd) terminating at Tha Phra. From the current Hualomphong terminus the line runs 5.4 km underground through Chinatown, under the Chao Praya river to Tha Phra station where it surfaces. It then runs west along Phetkasem road to Lak Song.
The project is divided into 5 contracts:
- Contract 1: 2.8 km underground from Hua Lamphong to Sanam Chai
(2 stations, Bt11.65 Billion, contractor ITD).
- Contract 2: 2.6 km underground Sanam chai-Tha Phra
(2 stations, for Bt10.82B, contractor CK)
- Contract 3: 11 km elevated from Tao Poon along Charan Sunit Wong rd (Inner Ring rd) to Tha Phra
(8 stations, Bt11.40B, contractor SH-Unique Joint venture)
- Contract 4: 10.5 km elevated from Tha Phra along Phetkasem rd to Lak Song
(7 stations, plus a park-and-ride venue and maintenance yard, Bt13.43B, contractor STEC)
- Contract 5: rolling stock and systems, Bt5.17 Billion, contractor CK.
As of July 2014 civil works progress was 52% done.
[4] By October, civil works were 63.75% done.
Future extension
For a few years there has been requests from residents to further extend the line from the future terminus at Lak Song further west to Phutthamonthon area and the MRTA has indicated a willingness to undertake this extension. In July 2014, the MRTA submitted a request for 84 million baht to complete a route survey for an 8 km extension from Lak Song to Phutthamonthon Sai 4.
[5]