Before and After: SR 99 tunnel launch pit looking north
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 April 18, 2014
Taken on April 17, 2014
Before and After: SR 99 tunnel launch pit looking north
Learn more about the Alaskan Way Viaduct Replacement Program at www.alaskanwayviaduct.org or follow Bertha, the SR 99 tunneling machine, on Twitter @BerthaDigsSR99.
26,625
views
3
faves
1
comment
Uploaded on April 18, 2014
Taken on April 17, 2014