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seattle bertha tunnel

Alaskan Way Viaduct - Follow Bertha

Follow Bertha Thank you for following Bertha. The SR 99 tunneling machine, nicknamed Bertha, has completed her work. For the latest tunnel progress, visit our new tracker page.

Bertha (tunnel boring machine) - Wikipedia

Bertha was a 57-foot-diameter (17.4 m) tunnel boring machine built specifically for the Washington State Department of Transportation's (WSDOT) Alaskan Way Viaduct replacement tunnel project in Seattle.

Seattle Bertha Tunnel - Image Results

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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.

Seattle's tunnel machine Bertha breaks through nearly 4 years ...

It's official - Bertha has broken through! Seattle's tunnel boring machine that's been digging beneath the city for the State Route 99 tunnel reached the end of its 1.75-mile journey Tuesday, nearly four years after it embarked on the job. Just before 10 a.m., Bertha pierced the cement wall of the ...

Bertha, Seattle's SR 99 Tunneling Machine, Is Finally Done ...

Bertha has broken through. After nearly four years underground, Seattle’s beleaguered boring behemoth clawed its way into daylight yesterday, leaving a 1.7-mile tunnel behind it.

Inside the Massive Tunnel Seattle Built to Replace an Aging ...

Now that Bertha's done ... having dug nearly 1.7 miles of tunnel. Now, Seattle's builders are kitting out the empty concrete tunnel ... WIRED’s biggest stories ...

Bertha’s woes grind on: cost rises, tunnel delayed until 2019 ...

Bertha’s problems will cost Washington state an estimated $223 million in cost overruns, ... Seattle Tunnel Partners (STP), ...

Watch: Bertha breaks through Seattle waterfront tunnel ...

Bertha, the world's largest tunnel-boring machine, completely broke through the north end of the tunnel shortly before noon Tuesday, April, 4 2017. Bertha has broken through. The world's largest tunnel-boring machine completely broke through the north end of the tunnel shortly before noon Tuesday ...

Seattle tunnel machine Bertha reaches halfway point — here’s ...

The SR 99 tunneling machine has passed the halfway point on its long journey beneath Seattle, and officials stood 10 stories below street level on Monday to show off where Bertha is expected to punch through next spring.

Alaskan Way Viaduct replacement tunnel - Wikipedia

The Alaskan Way Viaduct replacement tunnel is a bored road tunnel that is under ... WSDOT nicknamed the TBM "Bertha" after Seattle's first female mayor, Bertha Knight ...

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