Germany and Denmark are separated by a strait of just 20 km, but getting from one country to the other by land involves a 160 ...

Stretching 18 km between Denmark and Germany, this €7bn immersed tunnel is the world’s longest road and rail link. By 2029, it will replace a 45-minute ferry trip with a 10-minute drive or a 7-minute ...

The tunnel will stretch 17 miles at a maximum depth of 392 metres below sea level, which, compared to the Channel Tunnel, ...

A new, £6.2 billion project set to open in 2029 is expected to become the world's longest underwater rail and road tunnel. The major plan has been drafted to drastically reduce travel time between ...

Every day, long-haul truckers and commuters pass through the George Wallace Tunnel, briefly slipping away from daylight and 40 feet underwater, until reemerging into downtown Mobile, Alabama. Since ...

Tunnels are used to carry traffic through some of the most extreme terrain on the planet and they help ease journeys with reduced travel time. While most tunnels offer a short underground burst of ...

A project nearing completion in the Detroit area used a custom-built, diver-operated vehicle that can operate underwater and that replaced concrete liners for two raw water tunnels, eliminating the ...