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seattle tunnel boring machine stuck

Seattle Tunnel Boring Machine -- Bertha Rescue

Why Seattle's Huge Tunnel-Boring Machine Is Still Stuck A year after Bertha got stuck, plans to free the big machine have stalled. And there's another problem.

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 Tunnel-boring Machine Stuck - Image Results

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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.

America's Biggest Tunnel-Boring Machine Is Stuck Beneath Seattle

It's not uncommon to see damaged seals or bearings on tunnel-boring machines—WSDOT even put in its design-build contract that Seattle Tunnel Partners needed to have a spare $5 million bearing on hand in case of a problem with the original.

The world's biggest boring machine Bertha is taken out for ...

The machine, known as Bertha, ... Bertha got stuck for a year under Seattle after digging 1,000ft of a two-mile tunnel and had to turn around ...

Seattle Tunnel-boring Machine Stuck - Video Results

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The end is near for Bertha: After nearly ... - The Seattle Times

And after then-Mayor Mike McGinn predicted in 2010 that Seattle residents would get stuck paying ... (Ellen M. Banner / The Seattle ... of the tunnel-boring machine ...

Stuck In Seattle | Bloomberg Business - Business, Financial ...

Stuck in Seattle The Aggravating ... There are even pressure variations between the top and bottom of the boring machine. ... STP decided to buy the tunnel-­boring ...

Fly Through the Massive Tunnel They're Carving Under Seattle

Life has not been entirely kind to Bertha, the largest tunnel boring machine in all of North America. About two years ago, the machine, which measures 57 feet tall and 325 feet long, started excavating a two-mile tunnel under downtown Seattle. Seven months later, it ground to a halt, stuck. It had ...

Seattle tunnel-boring machine Big Bertha still stuck ...

SEATTLE — The state Department of Transportation and contractors building a highway tunnel under downtown Seattle are trying to find out what has blocked their tunnel-boring machine.

Alaskan Way Viaduct - Follow Bertha

The SR 99 tunneling machine, nicknamed Bertha, has completed her work. ... this page tracked her progress beneath Seattle. With the machine dismantled and removed, ...

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