Crews discovered an 8-inch steel pipe protruding through one of the openings of Bertha the tunnel boring machine today. The Seattle Tunnel Partners aren't ready to say exactly what is blocking Bertha, ...

Paul Roberts, Sound Transit vice-chair, smashes a bottle of apple cider Monday to dedicate the 21-foot diameter tunnel boring machine Brenda, which will tunnel from Northgate to the University ...

Slog, I need your help. I’m gonna try a bit of crowd-sourcing here—I’ve got a big document that you may be able to untangle. First the background: Bertha the tunnel-boring machine has been stuck about ...

This time, the problem didn’t originate with the tunnel boring machine itself. The issue that halted the operation was a listing barge hauling excavated soil out of Elliott Bay to a site near Port ...

To continue reading this content, please enable JavaScript in your browser settings and refresh this page. After more than a year stuck under ground, the tunnel ...

SEATTLE -- The contractors drilling a tunnel under downtown Seattle say so much groundwater is flowing into the tunnel, it will likely be January before they can look at what's blocking their boring ...

The five-story-tall tunneling machine that will bore a hole from SODO to Queen Anne for the new SR 99 tunnel now has a name: Bertha. The Washington State Department of Transportation launched a ...