from Jeff Switzer, WSDOT SR 520 Communications
SEATTLE – Float-out of the first six concrete pontoons for the new State Route 520 floating bridge will be delayed to allow crews time to make repairs and modifications after damaged concrete was found in one of the pontoons.
Work is planned on four of the six concrete pontoons under construction in Aberdeen and is preliminarily expected to take four to six weeks to complete. As a result, the completed pontoons are not expected to be towed out of the casting basin until July or August, depending on favorable tides.
The Washington State Department of Transportation is working with contractor Kiewit-General to analyze the cause of the damage and how the repair work might affect the construction schedule for the new floating bridge. Other SR 520 floating bridge construction will continue on pontoons in Tacoma, on anchors in Kenmore and bridge supports on the east side of Lake Washington.