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Northbound SR 99 bridge foundations complete | by WSDOT
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Northbound SR 99 bridge foundations complete

A very large piece of a crane sits on a flatbed trailer - a symbol of a milestone in the construction of the east, or northbound, half of the highway that is replacing the south end SR 99 Alaskan Viaduct. In late April crews completed the underground foundations of the elevated portion of the new SR 99 and broke down the cranes that helped build them. In construction this is called being "out of the ground." The foundations extend up to 250 feet underground and support the above-ground parts of the bridge. Learn more about construction underway to replace the south end of the Alaskan Way Viaduct.

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Taken on April 25, 2012