Mass Rapid Transit Authority of Thailand
Mass Rapid Transit Authority of Thailand


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        According to the feasibility study on economics and environment and the preliminary design of the Yellow Line project which was undertaken by Office of Transport and Traffic Policy and Planning (OTP) during the years 2007-2011, the Yellow Line project was divided into 2 sections, i.e. Ratchada/Lat Phrao-Phatthanakan section and Phatthanakan-Samrong section, or The Yellow Line(Lat Phrao - Samrong)


      The Yellow Line(Lat Phrao-Samrong) is the straddle monorail system on the elevated structure, 30.4 kilometers with 23 stations. It is the interconnecting line between the Blue Line at Ratchada station (Lat Phrao station of the Blue Line) and the other 4 lines of mass transit system, i.e. the Grey Line(ฺBMA) at Chalong Rat intersection, the Orange Line at Lam Sali intersection, Airport Rail Link at Rama IX interchange and the Green Line: Bearing-Samut Prakan at Samrong station.

Alignment (Lat Phrao-Samrong)

      The alignment originates at the interchange station with the Chaloem Ratchamongkhon Line (the Blue Line Initial System) at Ratchada/Lat Phrao intersection and runs along Lat Phrao road, to connect with the Grey Line(ฺBMA) at Chalong Rat intersection, across Chalong Rat Expressway to Bang Kapi intersection. Then, the alignment will turn right toward south on Srinagarindra road to connect with the Orange Line at Lam Sali intersection, across Rama IX interchange to connect with the Airport Rail Link through Phatthanakan, Si Nut, Si Udom Suk, Si Iam til Si Thepha intersection. The alignment will turn west onto Thepharak road to interconnect with the Green Line: Bearing-Samut Prakan at Samrong station and ends on Pu Chao Saming Phrai road. The total length is approximately 30.4 kilometers consisting of 23 stations, a depot at the east of Si Iam interchange, a park and ride building at the space of Si Iam interchange


1. Feasibility Study Review, Design and Tender Documents Preparation Consultant 124.45 2. Land Acquisition 6,013.00 3. Civil Works 20,973.00 4. M&E Works 19,729.00 5. Project Consultant 1,765.00 6. Provisional Sum 6,164.00 รวมทั้งสิ้น 54,768.45

Detail Cost Unit
Feasibility Study Review/Design and Tender Documents 124.45 million baht
Land Acquisition 6,013.00 million baht
Civil works 20,973.00 million baht
M&E Works 19,729.00 million baht
Project Consultant 1,765.00 million baht
Provisional Sum 6,164.00 million baht
TOTAL 54,768.455 million baht


The Project Cost was already approved by the MRTA Broad of Director on October 14, 2014