Up, up and away
A massive steel gate section is removed to make way pontoons to float out of the Aberdeen casting facility.
Construction crews working on the SR 520 Pontoon Construction Project took advantage of an extra-high tide Oct. 5, 2013, to float six concrete pontoons into the Chehalis River. These pontoons comprise the third of six pontoon construction cycles and are destined for Lake Washington to form the backbone of the new SR 520 floating bridge.
The third pontoon construction cycle included four longitudinal pontoons and two supplemental stability pontoons. The 360-foot-long longitudinal pontoons will help form the backbone of the new bridge, while the supplemental pontoons provide additional stability and flotation. We’ve now finished 38 of 77 pontoons needed for a new SR 520 floating bridge that will serve the region for 75 years or more.
Up, up and away
A massive steel gate section is removed to make way pontoons to float out of the Aberdeen casting facility.
Construction crews working on the SR 520 Pontoon Construction Project took advantage of an extra-high tide Oct. 5, 2013, to float six concrete pontoons into the Chehalis River. These pontoons comprise the third of six pontoon construction cycles and are destined for Lake Washington to form the backbone of the new SR 520 floating bridge.
The third pontoon construction cycle included four longitudinal pontoons and two supplemental stability pontoons. The 360-foot-long longitudinal pontoons will help form the backbone of the new bridge, while the supplemental pontoons provide additional stability and flotation. We’ve now finished 38 of 77 pontoons needed for a new SR 520 floating bridge that will serve the region for 75 years or more.