Alaskan Way Viaduct
An official for the contractor boring the Seattle Highway 99 tunnel says a six month delay in the stalled construction is a “slightly optimistic” forecast.
The Alaskan Way Viaduct has sunk nearly half-an-inch at one location where a machine has been boring a highway tunnel under downtown Seattle.
Wash. DOT says many of Big Bertha’s cutter-head openings are clogged with dirt and debris.
Seattle’s massive tunneling operation is on hold yet again due to ongoing problems with the world’s largest boring machine, officials said Friday.
The giant machine digging a highway tunnel under Seattle is expected to resume light work this week, but officials still don’t know what stopped the giant drill for nearly two months, the Washington State Transportation Department said late Monday.
Crews have found a hard object more than 3 feet wide lodged in the tunneling machine that’s currently stalled 60 feet under the city of Seattle, officials said Wednesday.
The Transportation Department says help is on the way for a massive machine that became stuck last month while boring a tunnel under downtown Seattle.
The contractors drilling a tunnel under downtown Seattle are closer to finding out what has blocked their boring machine.
Seattle’s tunnel-boring machine, known as ‘Big Bertha,’ hit an obstruction and is stuck
The world’s largest tunnel boring machine has resumed digging its way under downtown Seattle.