Throughout history, humans have built machines so massive, so powerful, they defy imagination. In this video, we explore 10 ...

Tunnel boring machines (TBMs) are very picky about the rocks they chew through. This is why geologists must monitor the rock at the head of every tunnel. On good days, TBMs can bore through rock ...

Construction on the Hampton Roads Bridge-Tunnel Expansion Project hit key milestones as tunneling progresses and traffic ...

Students across our state will have a chance to name the world’s largest tunnel boring machine. Next summer, the machine will begin work underneath downtown Seattle making way for the viaduct ...

Big Bertha tells the story of the machine that changed all that — or, more accurately, was the reason for it. This engineering marvel made history by creating the longest and widest road tunnel in the ...

The state-of-the-art boring machine will dig the largest single-bore transit tunnel in the world, nearly 54 feet in diameter. It's capable of digging 30 to 40 feet a day, according to VTA.

“The hole is big enough with just enough room to work around it to drop the tunnel boring machine into.” The launch pit will be a length of 400 feet, with a width and depth of 80 feet.

The breakthrough completes a section of twin rail tunnels between Olympic Park and Parramatta which will eventually form ...

Mary, the tunnel boring machine that has been paving the way for the expanded Hampton Roads Bridge-Tunnel, hit a milestone Wednesday when she finished the first of twin tunnels that are part of the ...

C onstruction enabling works for the Lower Thames Crossing, set to become the largest tunnel in Europe, has been scheduled to begin in late 2025.