Autocar on MSN

The longest road tunnels in the world

The Ryfylke Tunnel is the longest undersea road tunnel in the world at present and stretches some 8.98 miles between ...

China astonishes again; opens world's longest expressway tunnel with 1.1 km depth, passes through 16 geological fault zones, and more

According to China's state news agency Xinhua, its construction was an extremely difficult task due to the challenging ...
Interesting Engineering on MSN

World’s longest expressway tunnel opens in China at an altitude of 9,842 feet

China built the world's longest expressway tunnel using innovative approaches and cut down travel time in half between two cities.