Fluidr / Balloons over Bertha - First and Virginia 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.

The idea is to provide a visual of Bertha’s location relative to the surface. At this location, Bertha's cutterhead was nearly 220 feet below the surface.

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 > Pike Place Market

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