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China Builds World’s Widest Underwater Tunnel in 110 Days | 8‑Lane Record 🏗️🌊
Record Tunnel in Just 110 Days | China’s 46m Wide Underwater Roadway 🚧 In just 110 days, China built the world’s widest underwater shield tunnel—a staggering 46-meter (150‑ft) diameter, carrying eight lanes of traffic beneath the Pearl River Delta 🚧🌊. This engineering marvel uses advanced immersed tube technology and modular ...
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