April 27, 2010 in City
Associated Press photo

Test in progress: This Washington Department of Transportation photo shows the test pontoon for state Highway 520 at a test site in Satsop, Wash., on April 16. Made of concrete and 120 feet long, 38 feet wide and 29 feet tall, the test pontoon will give the Transportation Department a better idea of construction methods to use for the new Highway 520 floating bridge, which spans Lake Washington.


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