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China Completes World’s Largest Underwater Tunnel in Record 110 Days

Source: New Atlas

Source: New Atlas

China has achieved a major engineering milestone by completing the world’s largest-diameter underwater shield tunnel in just 110 days. The ambitious project, executed by the China Railway 14th Bureau Group, represents a significant advancement in infrastructure development.

Spanning a two-mile section beneath the Yellow River, the tunnel boasts a diameter of 55.8 feet and comprises 500 pipe rings. Construction relied on the Shanhe machine, a cutting-edge shield tunneling device designed for efficiency and precision. The rapid progress underscores China’s engineering capabilities and commitment to enhancing regional connectivity.

The tunnel will feature a three-lane, two-way design capable of supporting traffic at speeds of up to 37.2 mph. Once completed, it will link the southern urban side of the Yellow River with a free trade and innovation pilot zone on the northern side, fostering economic growth and improving accessibility.

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The project is expected to be fully operational by late 2025, further solidifying China’s reputation as a leader in large-scale infrastructure projects. This achievement marks a significant step forward in integrating advanced technology with sustainable urban development.

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