A bid to build the pontoons for a new SR 520 floating bridge have come in under the state's estimate with a Kiewit-General Joint Venture submitting the apparent best price and technical proposal. The ...

Ever driven across the state Route 520 bridge and wondered how something that massive and made of that much concrete can float? At 1.5 miles long, the existing 520 Bridge between Seattle and Medina is ...

News Photo by Reagan Voetberg Alpena Community College Concrete Technology students participate in the annual concrete canoe ...

On November 25, 1990, the Lacey V. Murrow Bridge plummeted into the mud beneath Lake Washington, according to History Link.org. Due to unusual wind and rainfall, concrete structures were weakened ...

ABERDEEN - Gov. Chris Gregoire and Transportation Secretary Paula Hammond keynoted a groundbreaking ceremony Saturday at the site where huge pontoons will be built for Seattle's new Highway 520 ...

Stunning new allegations have surfaced about the construction of the 520 Floating Bridge. A former inspector says the quality of the first pontoons built in Aberdeen was so shoddy that it's a ...