“Bertha” the nickname for Seattle’s tunnel boring machine, lies in pieces next to the viaduct the tunnel is supposed to replace.
The Alaskan Way Viaduct replacement tunnel is a bored road tunnel that is under construction in the city of Seattle in the U.S. state of Washington. The project has been stalled since December 2013. No firm date for if/when the project will continue has been set. The 2-mile (3.2 km) tunnel would carry State Route 99 under Downtown Seattle from the SoDo neighborhood to South Lake Union in the north.
Since 2001, the proposed replacement of the Alaskan Way Viaduct has been the source of much political consternation demonstrating the Seattle process. Options for the structure, which carries 110,000 vehicles per day, included either replacing it with a cut-and-cover tunnel, replacing it with another elevated highway, or eliminating it while improving other surface streets and public transportation. The current plan emerged in 2009 when government officials agreed to a deep-bore tunnel.
Photograph by Stuart Isett
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