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

Transit riders are always looking for a way to get around faster and more efficiently.  Underground passageways and ...

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

The construction workers inside the underground tunnel were rescued roughly an hour after the collapse.

Thirty-one people working in a massive underground tunnel in Los Angeles were rescued Wednesday night after a portion of the structure collapsed, officials said.

By Kathleen Magramo, CNN (CNN) — Thirty-one people working in a massive underground tunnel in Los Angeles were rescued Wednesday night after a portion of the structure collapsed, officials said.

A partial collapse in LA’s Clearwater Tunnel trapped 31 workers nearly 450 ft underground; all were rescued safely. Officials cite soft soil and “squeezing ground” as likely contributing ...