big bertha seattle tunnel

Bertha's big breakthrough is here: Seattle tunnel machine ...

After mining through more than 9,000 feet of Seattle underground, and rebounding from a lengthy breakdown and repair, Bertha the tunneling machine is poised to bust through its final obstacle on Tuesday.

Bertha breaks through: Watch the tunnel boring machine's ...

After more than three years of drilling, Bertha's journey is coming to an end on Tuesday—and the big moment is being livestreamed.

Prosaic Pipe Stymied Seattle's Big Bertha - The New York Times

Jan 03, 2014 · SEATTLE — The unknown object buried beneath this city, big enough to stop the world's largest-diameter tunnel-boring machine in its tracks last month and tantalizing enough in its mystery to set off a cottage industry of wispy romantic speculation, turns out to be an ordinary metal pipe, tunnel ...

Bertha | The Seattle Times

Read more about the technical challenges and rising costs of the Highway 99 tunnel project, and the successes and travails of Bertha, the biggest-ever boring machine.

Alaskan Way Viaduct - Home

A year in tunnel progress. Since Bertha placed the last tunnel ... It's a big job. Inside the tunnel there are: ... Seattle Tunnel Partners has completed some of ...

Seattle's unbelievable transportation megaproject fustercluck ...

Seattle's tunnel plan. ... Seattle Tunnel Partners, which owns Bertha, ... they have to keep pumping saltwater out lest the big hole fill up.

SR 99 (@BerthaDigsSR99) | Twitter

@BerthaDigsSR99. Bertha completed her dig ... It's a big bike weekend in Seattle w/ the ... It's been one year since Bertha broke through at the tunnel's ...

Watch Bertha, the world's largest tunnel boring machine ...

From the dark depths beneath Seattle, Bertha the SR 99 tunnel machine ... the world's largest tunnel ... King County and the Port of Seattle. "This is a big ...

Seattle's big tunnel project reaches a milestone, but it's ...

Seattle's big tunnel project ... A project to bore a tunnel under Seattle and construct an underground ... 326-feet-long tunnel boring machine, known as Bertha.

Big Bertha: Mystery object blocks Seattle's tunnel drill ...

The world's biggest tunnel boring machine, named after Seattle's first female mayor, has been brought to a halt

World's biggest tunnel machine Bertha emerges from beneath ...

Bertha, the world's largest tunnel-boring machine, ends its journey today. It has spent four years traveling less than two miles to build a new car tunnel underneath Seattle.