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Bangkok – Progress on the first phase of the China-Thailand High-Speed Railway (HSR) project has surpassed the halfway mark, with 51.74% of the construction completed as of February 15, 2026, according to Thailand’s National Railway Authority. Officials are maintaining a target for the railway to begin commercial operations in 2030, a key component of Thailand’s long-term transportation infrastructure strategy.
The 250.77-kilometer railway, connecting Bangkok and Nakhon Ratchasima, represents a significant investment of 179.4 billion Thai baht (approximately 39.9 billion yuan), and is being developed under China’s Belt and Road Initiative. The project aims to modernize Thailand’s rail network and improve connectivity within the region.
Thailand’s Senate Transportation Committee recently conducted an on-site inspection of the Chira Noi railway station in Pathum Thani province to assess the progress of the first phase, dubbed the “Bangkok-Nakhon Ratchasima” section. Discussions focused on project advancement, existing challenges, and plans to accelerate construction, according to China News Service reports. The committee emphasized the importance of transparency, prudence, and adherence to the highest safety standards throughout the project’s completion.
Currently, 14 civil engineering contracts are underway, with two already finished: Contract 1-1 (Chong Li – Bang Asok section) and Contract 2-1 (Si Khiu – Kut Chik section). Ten additional sections are actively under construction. Two contracts – 4-1 (Bang Sue – Don Mueang section) and 4-5 (Ban Pho – Phra Kaeo section) – remain unsigned, but the railway authority has urged contractors to strictly adhere to construction schedules even as reinforcing quality and safety management oversight, QQ News reported.
Project Details and Stations
The first phase of the HSR includes 14 civil works contracts and one systems engineering contract. The route will consist of approximately 188.68 kilometers of elevated track and 54.09 kilometers at ground level, with two tunnels totaling 8 kilometers in length near Muak Lek and Lan Dakong. Six main stations are planned along the route:
- Bangkok Aphiwat Central Station
- Don Mueang
- Ayutthaya
- Saraburi
- Pak Chong
- Nakhon Ratchasima
The project’s completion is slated for 2030, marking a significant milestone in Thailand’s infrastructure development.
Second Phase Approved, Extending the Line
The second phase of the China-Thailand HSR, extending the line from Nakhon Ratchasima to Nong Khai, received cabinet approval on February 4, 2025, and has completed its environmental impact assessment, according to Guancha.cn. This extension represents an investment of 256.4 billion Thai baht (approximately 57 billion yuan) and spans 357.12 kilometers.
The second phase will include five additional stations: Bua Yai Junction, Ban Phai, Khon Kaen, Udon Thani, and Nong Khai. Tendering and contract signing are expected to begin this year, following government procurement procedures. Construction is projected to accept 48 months, with an anticipated operational launch in 2031. This extension aims to strengthen regional rail connectivity and promote economic development in Thailand’s Northeast corridor.
The development of the HSR network is seen as crucial for improving transportation links between Thailand, Laos, and China, potentially integrating with the China-Laos Railway and providing a direct route to Kunming, China. However, as Voice of America reported, observers have noted potential delays due to bureaucratic processes and challenges in project management.
Looking ahead, the successful and timely completion of both phases of the China-Thailand HSR will be critical for realizing its economic and strategic benefits. The next key steps involve finalizing contracts for the remaining sections of the first phase and initiating the tendering process for the second phase, while maintaining a focus on quality, safety, and transparency.
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