The huge level of technology in this plug-in hybrid supercar doesn't get in the way of outrageous driving thrills.

Currently, the world's longest undersea section of a tunnel belongs to the Channel Tunnel, which has a 23.5-mile (37.9 ...

The Mitchell Point Tunnel in the Columbia River Gorge is a re-creation of the crown jewel of the nation's first scenic ...

One of California's most expensive infrastructure projects is inching forward in a tiny city on the north coast, where ...