Construction moving ahead
On Oct. 16, 2013 Kiewit-General crews prepared for the fourth cycle of pontoon construction in Aberdeen by placing the massive formwork into the casting basin. Once assembled, this formwork will be used to construct six new concrete pontoons for the State Route 520 floating bridge.
Construction crews are underway on the fourth cycle of SR 520 bridge pontoons in Aberdeen. In this cycle, crews will build six total pontoons:
• Four longitudinal pontoons (360 ft. x 75 ft. x 29 ft.)
• Two supplemental stability pontoons (98 ft. x 60 ft. x 28 ft.)