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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.

Alaskan Way Viaduct replacement tunnel - Wikipedia

The Alaskan Way Viaduct replacement tunnel is a bored road ... diameter tunnel-boring machine, "Bertha ... Seattle Tunnel Partners and machine manufacturer ...

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

Watch Bertha, the world’s largest tunnel boring machine, ... Bertha’s big breakthrough is here: Seattle tunnel machine will emerge Tuesday after long journey.

Seattle's Big Bertha Tunneling Machine Is Finally Back on Track

Seattle's Big Bertha Tunneling Machine Is Finally Back on Track. After three years and millions of dollars in repairs, the SR99 tunneling machine in Seattle has resumed operations.

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

The tunneling machine, named for former Seattle mayor Bertha ... Bertha the tunneling machine broke through a new concrete ... WIRED’s biggest stories ...

Big Bertha, world's largest tunnel-boring machine, arrives in ...

Big Bertha, world’s largest tunnel-boring machine, arrives in Seattle . Wayne Grayson | April 4 ... Big Bertha is the world’s largest tunnel-boring machine.

big bertha tunnel machine in seattle - physiomat.eu

Big Bertha - Wikipedia. Big Bertha is a euphonious term for an unusually large example of a class of object; notable examples include:. Military guns:.

Big Bertha -- world's largest tunnel boring machine -- facing ...

Named after one of Seattle's early mayors, the $80 million drill Big Bertha is 326 feet long, weighs 6,700 tons, and does much more than drill. John Blacksto...

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.

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.

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