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Tag: Bertha boring machine
Roadbuilding
WSDOT creates online open house for Alaskan Way Viaduct demolition
The Washington State Department of Transportation (WSDOT) has created an online open house to offer the public a view of plans to demolish the old Alaskan Way Viaduct after the new SR 99 tunnel opens in early 2019. Bertha, the world’s largest tunnel boring machine, finished the outer wall of the SR 99 tunnel in […]
August 8, 2017
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