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Underneath the 11,000 ton Pontoon T

Supported by heavy-duty posts, a new SR 520 bridge pontoon was raised into a Portland, Oregon drydock in late June, 2013. The drydock allows crews to make repairs to the undersides and end walls of the pontoon before it returns to Lake Washington.

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Uploaded on July 17, 2013
Taken on July 11, 2013