These giant floating excavators work through deep water and heavy mud with incredible power and stability. Built for extreme ...
Crews are now drilling a launch pit to hold the massive tunnel-boring machine for the Alaskan Way Viaduct Replacement project. The project will be using the largest diameter tunnel boring machine ever ...
The 900,000-pound machine that started boring a gargantuan sewage and stormwater tunnel under Seattle in 2021 at last burst into the open this month, completing its rocky 2.7-mile route in just under ...