Fluidr / Balloons over Bertha - Fourth Avenue-1 by WSDOT

Launched in late August 2016 when Bertha passed beneath First Avenue and Union Street, #BalloonsOverBertha is yet another way to track progress on the SR 99 Tunnel Project.

We took this photo in late January 2017, when Bertha was beneath Fourth Avenue between Battery and Bell streets in Belltown, near Seattle Fire Department Station No. 2.

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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This photo was taken in: United States > Washington > King > Seattle > Denny Regrade

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