SEATTLE -- Another part of the Alaskan Way Viaduct has gone to dust, and ahead of schedule to boot. Demolition crews have removed one of the viaduct's last remaining parts days early and the ...
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From Viaduct to Tunnel: Seattle’s Mega Project ExplainedSeattle’s Alaskan Way Viaduct was seismically unsafe, leading to one of the city’s most ambitious projects: the Bertha tunnel. Learn how the project was planned, the challenges faced ...
A portion of Seattle's Alaskan Way Viaduct is being replaced by a deep tunnel, and the machine purpose-built for the job is the world's largest tunnel boring machine (TBM), christened "Bertha." ...
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