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Reconnecting Bertha’s front end

On Saturday, Aug. 15, 2015, crane crews from Mammoet lifted the SR 99 tunneling machine’s bearing block into place atop the cutterhead and drive unit. Learn more about the Alaskan Way Viaduct Replacement Program at www.alaskanwayviaduct.org or follow Bertha, the SR 99 tunneling machine, on Twitter @BerthaDigsSR99.

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Uploaded on August 18, 2015
Taken on August 15, 2015