The 76-mile Bohai Strait Tunnel will cost over $30 billion and take up to 15 years to build, with 56 miles running underwater ...

Previously the longest road tunnel in the world, the Gotthard Base Tunnel in Switzerland has slipped down the ranking as new ...

The tunnel will consist of two parallel tubes, each carrying two lanes of traffic. At its deepest point, the road will lie ...

Norway is quietly attempting one of the most ambitious road projects on the planet, driving a multi-lane highway deep under ...

Norway's Rogfast tunnel will be the world's longest undersea road tunnel upon its planned completion in 2033. The project is ...