International
via Qingdao Conson Development

China - Construction on the World's Longest Subsea Road Tunnel Begins

The commencement ceremony for the second Jiaozhou Bay Tunnel project, also the world's longest Subsea road tunnel, was held in Qingdao's West Coast New Area on October 29, bringing together leaders and experts from government, academia, and Qingdao Conson Development (Group) Co., Ltd. (hereinafter "Qingdao Conson Development") to witness its kick-off.

During the ceremony, Wang Jianhui, the Chairman of Qingdao Conson Development's said, "The second Jiaozhou Bay Subsea tunnel will optimize the city's urban structure and strengthen the connection between the east and the west, enabling both sides of the strait to flourish and alleviating traffic congestion. With a high standard of design, construction quality, and management efficiency, Qingdao Conson Development is excited to contribute to the emergence of Qingdao as an open, modern, dynamic, fashionable, and international city."

Qingdao Conson Development began preliminary research on the second Jiaozhou Bay Subsea tunnel in 2012, engaging China's leading experts, including academician Qian Qihu. In total, four pre-feasibility and 15 feasibility studies were conducted. Now, Qingdao Conson Development has begun construction on what will become the world's longest Subsea road tunnel.

This project leverages international cooperation and innovation to propel tunnel design and construction into a new era. By overcoming challenges such as tunnel ventilation, disaster prevention, super-high water pressure, passage through large-scale fractures, and large-scale diameter shield docking in the drill-and-blast method, it is a historic achievement and major feat, making China a leader in tunnel engineering.

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