The Government of Thailand has announced plans to invite bids in December 2026 for eight civil works contracts for the Bangkok–Nong Khai High-Speed Railway Phase 2, extending the line from Nakhon Ratchasima to Nong Khai on the Laos border.
The second phase will extend the passenger railway towards Nong Khai, strengthening connectivity between Bangkok and northeastern Thailand and supporting a future regional rail link with Laos and China. The State Railway of Thailand (SRT) is responsible for the project.
Construction of the first phase between Bangkok and Nakhon Ratchasima has now passed the halfway point. The project forms part of Thailand’s wider plans to develop high-speed passenger rail connectivity across the country and improve links with neighbouring countries.
