Progress as of 25 September 2025: 66.89%
September 2025 Contract 4-7 Saraburi–Kaeng Khoi Section
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)