Another innovative idea involves a floating tunnel submerged 49 meters underwater. This structure would consist of prefabricated segments held in place by tension cables, balancing both the ...

One alternative gaining attention is a floating tunnel submerged 49 meters underwater, composed of prefabricated segments tethered by cables. Even if the project began, it would take decades to ...

The tunnel is then covered with a steel-and-concrete casing to prevent the tunnel from floating and to protect it from damage caused by passing ships. Underwater tunnels around the world ...