13M views · 59K reactions | Mary, the tunnel-boring machine, made its final breakthrough on the new Hampton Roads Bridge Tunnels Wednesday. Gov. Glenn Youngkin and U.S. Secretary of Transportation Sean Duffy were in attendance for the historic moment, marking a major milestone in the HRBT Expansion Project — a nearly $4 billion project that has taken almost 17 million man-hours. The new tunnels are expected to open by spring 2027. | WTKR News 3 | Facebook

4.6K views · 83 reactions | Tunnel Boring Machine (TBM) tunnelling is...

Tunnel Boring Machine (TBM) construction is a mechanized tunnelling method used for excavating underground tunnels with minimal surface disruption. A TBM is a massive cylindrical machine equipped with a rotating cutterhead that excavates soil or rock while advancing forward. The excavated material is transported out of the tunnel via conveyor belts muck transportation or slurry pipelines, depending on the TBM type. Simultaneously, pre-cast concrete segments are installed along the tunnel walls t

5.3K views · 108 reactions | Tunnel Boring Machine (TBM) tunnelling...

8.5K views · 326 reactions | Breaking News!   Vida, the tunnel boring machine, has successfully broken through at the West Gate Freeway!  This marks the completion of digging the first of the twin West Gate Tunnels.  Close to 7000 hours underground building your alternative to the West Gate Bridge. | West Gate Tunnel Project | Facebook

26K views · 227 reactions | world's largest tunnel boring machine | Discover World | Facebook