The Los Angeles Fire Department says 31 construction workers are safely out of an industrial tunnel that partially collapsed.

The U.S. Army Corps of Engineers has released a draft analysis of the environmental effects of building a protective tunnel around an aging Enbridge oil pipeline running beneath a channel ...

Tunnel boring machines are the true titans of modern construction, with massive machines like Bertha and Heron Connect revolutionizing the way cities are built. These colossal machines can carve ...

CAPE CHARLES, Va. (WAVY) — The tunnel boring machine known as Chessie broke through the receiving pit on Two Island at the Thimble Shoal Channel at the Chesapeake Bay Bridge-Tunnel Monday, the ...

The Chesapeake Bay Bridge-Tunnel expansion achieved a major milestone as its tunnel boring machine "Chessie" reached its destination.

Seattle Tunnel Partners spent the summer cutting the tunnel boring machine and her 5-story-tall cutterhead into pieces, lifting them out of the receiving pit and trucking them away.

After four years of moving — and sitting broken for a while — underneath downtown Seattle, the world’s largest tunnel-boring machine on Tuesday reached the end with much fanfare.

The tunnel boring machine got the name Bertha when she was a proud, new drill above ground. The name in part honored a past Seattle mayor. But would she really want the drill named after her now?

The Seattle Underground Tour is already a popular attraction, but KIRO Radio’s Tom and Curley think they could have an expansion on their hands. If tunnel boring machine Bertha can’t get up ...

Bertha's dirt-eating days are over — for at least six more months. Bertha's dirt-eating days are over — for at least six more months. The world’s largest tunneling machine, stuck underground ...

The Seattle Tunnels Project has been scolded by the state for not hiring enough women and minorities. Here is the project's Bertha tunnel-digging machine. By Ben Miller – Contributing Editor ...