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From 8 Hours of Travel to 40 Minutes
The project, known as the Bohai Strait Tunnel, will connect the cities of Dalian and Yantai. At present, crossing the Bohai Strait requires a long detour or a ferry journey that can take six to eight hours. Once completed, the tunnel will cut that travel time down to just 40 minutes.
The concept is as straightforward as it is bold: two parallel tunnels beneath the seabed, designed for high-speed trains traveling at up to 240 km/h. That is faster than trains through the Channel Tunnel. With a total length of more than 120 kilometers—around 90 kilometers of it underwater—it is set to become the longest undersea tunnel in the world.
