Greater Mekong Subregion Highway Expansion


Project 41682-013
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Type Loan
Sector Transport
Country Thailand
Start 2009
End 2017
Status Closed
Last Edited 05 Jul 2021


US$('000) 179,400

Project Description

The Greater Mekong Subregion (GMS) Highway Expansion Project upgrades 178 kilometers (km) of two-lane national highways to four-lane divided highway standard. Highway 12 from Phitsanulok to Lom Sak (105 km) is on the GMS East-West Economic Corridor; and Highway 359 from Phanom Sarakham to Sa Kaeo (73 km) is along the GMS Southern Economic Corridor. The Project also assists the Department of Highways (DOH) under the Ministry of Transport (MOT) in preparing an implementation plan for the Strategic Intercity Motorway Network. This includes a detailed and coordinated implementation and financing plan for strategic intercity motorways along three corridors radiating out from Bangkok to a distance of 200-250 km, as well as a detailed analysis of financing alternatives.

Progress (as of March 2021)

Project closed


Contact 1
Contact Name Tanaka, Yasushi
Organization Asian Development Bank
Contact 2
Contact Name -
Organization -
Email -

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