The Government of Thailand is reviving plans to construct a 365 km extension of the Thailand Riviera Coast Road, expanding the country’s coastal highway network to support tourism, regional connectivity and economic development in southern Thailand.
The proposed extension would continue the existing route from Chumphon to Surat Thani, Nakhon Si Thammarat and Songkhla. A feasibility study for the project is scheduled to be prepared in 2027 for the Ministry of Transport.
The original project, also known as the Southern Coastal Road, was approved in 2006, with approximately 515 km of highway constructed between Phetchaburi and Chumphon at a cost of around USD978 million. The revived proposal includes three additional sections of 150 km, 200 km and 85 km, increasing the total length of the Thailand Riviera Coast Road to approximately 880 km.
The extended highway is expected to improve access to key coastal destinations, strengthen regional transport links and boost tourism across southern Thailand. The Ministry of Transport is currently evaluating the construction costs for the remaining sections of the route.
