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WSDOT moves six pontoons for 520 bridge

WSDOT crews towed six pontoons from casting basins into the Grays Harbor Sunday night.

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Crews use a large crane to remove a walkway section from the top of the SR 520 pontoon casting basin gate. Once the walkway and gate is removed, and the tide waters get high enough, crews will tow six pontoons from the basin into the Grays Harbor.
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