Pontoon construction continues for SR 520 bridge in Wash.

01/25/2012 | Daily World (Aberdeen, Wash.), The

The number of construction workers required to build pontoons for the State Route 520 bridge in Washington state has peaked at the work site in Aberdeen, Wash. The massive pontoons require a concrete created specially for pontoons. Work on the casting basin is complete, and aside from the pontoons, workers are also busy building the "cells" that will keep the pontoons afloat.

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Daily World (Aberdeen, Wash.), The

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