Watch Bertha, the world’s largest tunnel boring machine, emerge from beneath Seattle From the dark depths beneath Seattle, Bertha the SR 99 tunnel machine headed out of the muck and into daylight on… Read More
Bertha’s big breakthrough is here: Seattle tunnel machine will emerge Tuesday after long journey After mining through more than 9,000 feet of Seattle underground, and rebounding from a lengthy breakdown and repair, Bertha the… Read More
Seattle tunnel machine Bertha is just days from breaking through to complete long journey If you’ve forgotten what Bertha, the SR 99 tunneling machine, looks like after all these years, get ready to see… Read More
New 360 video shows tunnel machine Bertha at work beneath Seattle as it enters the home stretch A 360-degree video shot inside the tunnel being built beneath Seattle gives viewers a unique new perspective of what it’s like… Read More
Video: How a double-deck highway is built inside the Seattle tunnel — with enough concrete for 9 football stadiums Seattleites caught up in the twists and turns and starts and stops of Bertha, the SR 99 tunneling machine, might lose… Read More
Under pressure: Seattle tunnel contractors show what it takes to work safely on Bertha High above the spot where Bertha, the SR 99 tunnel machine, sits idle during a scheduled maintenance stop, workers with Seattle… Read More
