After years of technical analysis, public input and federal review, the Santa Clara Valley Transportation Authority (VTA) recently selected the single-bore tunnel as the preferred design method for ...

Next year, the first modern tunnel-boring machines ever used in New Jersey will arrive in North Bergen to begin drilling the first mile of the $16 billion Gateway Tunnel through the rocky Palisades.

A $360 million Manchester, N.H., stormwater tunnel project is preparing for the arrival on site of a 281-ton (dry) tunnel boring machine that weighs more than three times a 73.6-ton M1 Abrams tank.

A giant HS2 boring machine has broken through to complete the first section of a 3.5-mile tunnel on the route’s approach into Birmingham. The 125-metre long, 1,600-tonne machine, named Mary Ann by the ...