A 700-foot-long tunnel boring machine named Mary is being assembled in Washington, D.C., to dig a 5.5-mile stormwater and ...

Mary’s job is done. On Wednesday, the tunnel-boring machine known as Mary, responsible for digging the two new tunnels for the Hampton Roads Bridge-Tunnel expansion, completed the second and final leg ...

Add Yahoo as a preferred source to see more of our stories on Google. Next year, the first modern tunnel-boring machines ever used in New Jersey will arrive in North Bergen to begin drilling the first ...

A tunnel-boring machine stalled beneath China’s Yangtze River while excavating a highway tunnel, forcing engineers to complete an unprecedented mid-river docking operation over two years.

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 ...

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

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

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) ...

Just over a week after groundbreaking, HCM City’s Metro Line 2 - connecting Ben Thanh and Tham Luong - has entered the geotechnical survey phase, with preparations underway to install a massive tunnel ...