The first four tunnel boring machines are coming to New Jersey to build the Gateway rail tunnel. Here's what they do and why they're the safest method.

DC Water took a major step Tuesday in the Potomac River Tunnel Project, lowering the cutterhead for ‘Mary,’ the tunnel boring ...

Crews are now drilling a launch pit to hold the massive tunnel-boring machine for the Alaskan Way Viaduct Replacement project. The project will be using the largest diameter tunnel boring machine ever ...

VIRGINIA BEACH — Now that the anchor’s away, expansion work at the Chesapeake Bay Bridge-Tunnel is back at full bore. Burrowing of a new tunnel to help carry more vehicles between Virginia Beach and ...

Work to start digging a new Hudson Tunnel is set to begin this spring as two tunnel boring machines custom-built for the project are on their way to New Jersey. The new rail tunnel, called the Gateway ...

NEW YORK (PIX11) — The first commuter rail service through the new Hudson River tunnel is planned to run about a decade from now. But crews are busy building structures and clearing the way for the ...

Deep under the Yangtze River, a stranded tunnel boring machine that looked like a sunk cost has instead become a showcase of ...

Mary, the enormous drill doing the bulk of the heavy lifting in the Hampton Roads Bridge-Tunnel Expansion Project, began boring the second tunnel Thursday after a six-month break. She finished digging ...

CAPE CHARLES, Va. — Project leaders with the Chesapeake Bay Bridge Tunnel reported that Chessie, the tunnel boring machine used to dig the second tunnel, had broken through at the second island.

A giant boring machine has broken through to complete excavation work to all of the tunnels along the 140 mile route of the HS2 railway. The enormous 125m (410ft) long machine emerged today (Mon) ...

The contractor digging a highway tunnel under Seattle is asking for $190 million in extra pay. Documents obtained by The Seattle Times show Seattle Tunnel Partners has asked for $62.6 million in ...