Progress as of 25 December 2025: 99.75%
December 2025 Contract 3-2 Railway tunnels at Muak Lek and Lam Takhong
The Cooperation between the Government of the Kingdom of Thailand and the Government of the People's Republic of China on
Bangkok–Nong Khai HSR Development for Regional Connectivity
(Section 1: Bangkok–Nakhon Ratchasima)
Bangkok–Nong Khai HSR Development for Regional Connectivity
(Section 1: Bangkok–Nakhon Ratchasima)