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 ...

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 ...

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 ...