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China Completes Underwater Tunnel for High-Speed Rail Expansion

4/1/2026

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Summary

Story summary

China has completed the underwater section of a 14-km high-speed rail tunnel beneath the Yangtze River, linking Chongming Island (Shanghai) with Taicang (Jiangsu).
The project is due to finish by end-2026, enabling trains at 350 km/h and improved links to Hefei, Anhui.
The tunnel is the longest of its kind in China and is part of a 2,000 km expansion to Chengdu with 500 billion yuan.

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Story summary

China has completed the underwater section of a 14-km high-speed rail tunnel beneath the Yangtze River, linking Chongming Island (Shanghai) with Taicang (Jiangsu).
The project is due to finish by end-2026, enabling trains at 350 km/h and improved links to Hefei, Anhui.
The tunnel is the longest of its kind in China and is part of a 2,000 km expansion to Chengdu with 500 billion yuan.