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bertha the tunneling machine

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Bertha (tunnel boring machine) - Wikipedia

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. An abbreviated history of Bertha:

Alaskan Way Viaduct - Follow Bertha

4/4/2017 · Bertha the tunneling machine broke through a new concrete wall into a disassembly pit. At first it was hard to see the machine's arrival through clouds of dust.

Tunnel boring machine - Wikipedia

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 biggest tunnel-boring machine ever to get stuck under Seattle. More than six months after Bertha had stopped her daily tunneling, I headed down to Seattle's historic Pioneer Square ...

Bye-Bye to Bertha, the world’s largest tunneling machine ...

The machine completed its tunneling on April 4, 2017 and was fully dismantled and removed from the tunnel on Aug. 23, 2017. + Bertha's tunnel route The SR 99 tunnel was built by one of the world's largest tunneling machines.

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

On Saturday,the world's largest tunnel boring machine was dedicated in the city of Seattle. “Bertha,” as it’s known, will spend the next 14 months boring a 1.7 mile (2.7 km) tunnel under the ...