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September 12, 2013
Cracks, columns get repaired on pontoons for 520 bridge
Six of the 10 columns on one of the pontoons must be replaced. The columns are 58 feet tall.
This repaired pontoon was floated out of a dry dock on Harbor Island on Tuesday.
Repairs are well under way on the cracked pontoons plaguing the Washington State Department of Transportation's state Route 520 bridge replacement project.
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