Building on advances at similar tunnels in China, the Dalian Bay Undersea Tunnel team had to solve numerous technical challenges and adapt to cold site conditions to complete the first cross-sea immersed tube tunnel in the northern reaches of the country. To ensure safety and high quality production, the team says it developed many first-of-its-kind methods and technologies—and built the most advanced and highest production capacity dry dock for an immersed tube prefabrication yard in Asia.
