The Washington State Dept. of Transportation is creating a list of best construction practices for floating bridges, based on results of tests conducted on a pontoon built at one-sixth the typical ...

Plans to build the SR 520 Pontoon Construction Project at the Aberdeen Log Yard gained federal approval this week, clearing the Washington State Department of Transportation (WSDOT) and Kiewit-General ...

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 ...

The final eight “supplemental stability pontoons” for the new State Route 520 floating bridge floated out of their casting basin this week, marking the completion of the 44 bridge pontoons built in ...

A comprehensive review is due Tuesday of construction flaws found on pontoons for the new highway 520 floating bridge. Some of the 33 pontoons built in Aberdeen have arrived at Lake Washington with ...

ABERDEEN — Always mixing and tweaking, industrial engineers continue working to develop the right concrete recipe and process to build the strongest pontoons possible for the upcoming Highway 520 ...

SEATTLE -- Two more concrete pontoons meant for the new 520 floating bridge are set to leave Grays Harbor this week. Officials from the Washington State Department of Transportation are optimistic ...

Drivers crossing Lake Washington on SR 520 will notice an apparent milestone in the construction of a new floating bridge. But actually driving on what your tax and toll money is paying for is still ...