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Here's How Tunnel Boring Machines Work (And Why They're Sometimes Buried Underground)

In the early decades of the 19th century, London was facing a major problem. The city had become the world's busiest port, but in order to transport goods from the docks to the heavily-populated ...
DelmarvaNow

'Chessie' makes big breakthrough in Chesapeake Bay Bridge-Tunnel project. Watch it here.

Chessie, a tunnel-boring machine, has completed her work on the Chesapeake Bay Bridge-Tunnel's new Parallel Thimble Shoal Tunnel. The machine removed 500,000 cubic yards of soil, and installed almost ...
wtvr

Tunnel-boring machine Mary makes final breakthrough for Hampton Roads Bridge-Tunnel expansion

HAMPTON, Va. — With a loud groan, and cheers and applause from a crowd of onlookers, Mary, the tunnel-boring machine, broke through onto the south island of the Hampton Roads Bridge Tunnel Wednesday ...
WVEC

Tunnel boring machine 'Mary' reaches another milestone in HRBT expansion

NORFOLK, Va. — The U.S. Secretary of Transportation joined Governor Glenn Youngkin on Wednesday to mark a milestone for the Hampton Roads Bridge-Tunnel Expansion Project. Mary, the massive tunnel ...