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

The HRBT Expansion Project reached a significant milestone on Jan. 14 as the final piece of Mary the Tunnel Boring Machine's ...

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.

The Hudson Tunnel Project is marking another major milestone as it nears a critical point in the $16 billion process. During its Aug. 20 board meeting, Gateway Development Commission announced that ...

HAMPTON ROADS, Va. — The massive boring machine that's being used in the Hampton Roads Bridge-Tunnel expansion project reached a huge milestone. The machine, named "Mary," is digging the tunnel for ...

NORTH BERGEN, N.J. — Disassembled sections of two tunnel boring machines that will help dig a $16 billion rail tunnel between North Jersey and Manhattan are on their way to the Garden State. The ...

Mary, the tunnel-boring machine, is on the move again! Thursday, Mary began boring a twin eastbound tunnel in part with the Hampton Roads Bridge-Tunnel Expansion Project. Watch: First of 4 gantries ...

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 CBBT ...

Chinese engineers have managed to turn disaster into a masterful engineering feat by rescuing a stranded tunnel boring ...

HAMPTON, Va. (WAVY) — Mary, the tunnel boring machine for the new Hampton Roads Bridge-Tunnel expansion, completed the first new tunnel at the HRBT’s North Island Wednesday morning, a major milestone ...

Seven months after beginning its journey, Elaine the tunnel boring machine has completed its subterranean mission drilling out the Northside Interceptor Tunnel (NSIT). The 16.5-foot diameter, ...