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Big bertha seattle tunnel project
It was made by Hitachi Zosen Sakai Works in Osaka, Japan, and the machine's See more. Bertha was a foot-diameter ( m) tunnel boring machine built specifically for the Washington State Department of Transportation's (WSDOT) Alaskan Way Viaduct replacement tunnel project in Seattle, Washington, United States. Mar Seattle Public Utilities wants the public to help name a new Tunnel Boring Machine set to work on a Ship Canal Water Quality Project. . Search for big bertha seattle tunnel project in the English version of Wikipedia. Wikipedia is a free online ecyclopedia and is the largest and most popular general reference work on the internet. It was made by Hitachi Zosen Sakai Works in Osaka, Japan, and the machine's assembly was completed in Seattle in June Tunnel boring began on July 30, , with the machine scheduled to complete the tunnel in December On December 6, , work was halted approximately 1, Bertha was a foot-diameter tunnel boring machine built specifically for the Washington State Department of Transportation's Alaskan Way Viaduct replacement tunnel project in Seattle, Washington, United States. [63] As of December 15, , the tunnel length reached 70% completion. [64] Tunnel boring was completed on April 4, , [4] and the finished tunnel opened to traffic on February 4, [65]. By September 30, , Bertha had tunneled 4, feet (1, m), surpassing the halfway mark of the planned 9,foot (2, m) distance. Tunneling began in earnest on July 30, By December, it had . Dec 11, · Bertha, a foot-diameter tunnel-boring machine, was built in Japan and shipped over for the job. Apr From the dark depths beneath Seattle, Bertha the SR 99 tunnel machine headed out of the muck and into daylight on Tuesday, completing a final.