Shield tunneling completed for Jiaozhou Bay's second undersea tunnel#coolchina

The main shield #tunneling work of Qingdao's second Jiaozhou Bay undersea tunnel has been completed. Crews used a giant shield #machine to excavate deep beneath the sea, overcoming complex underwater geological challenges. The 17.48-kilometer tunnel, including a 9.95-kilometer undersea section, is designed for speeds of up to 80 km/h and will improve regional #travel.

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For more: https://news.cgtn.com/news/2026-07-14/Shield-tunneling-completed-for-Jiaozhou-Bay-s-second-undersea-tunnel-1OMjsNebCA8/p.html

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