Don't walk this way
A section of walkway swings from a crane over the SR 520 pontoon construction site after it's removed from top of the casting basin gate. After setting it on land, crew will remove the basin gate and tow six massive condrete pontoons from the basin. Photo taken April 28, 2013.
Progress continues on the SR 520 Pontoon Construction Project, as the second cycle of new pontoons left the Aberdeen casting basin overnight April 28 and 29, 2013. The late-night timing coincided with the favorable high tide needed for float-out.
In the second cycle, crews built three longitudinal pontoons, two supplemental stability pontoons and one cross pontoon. The 360-foot-long longitudinal pontoons are the backbone of the new SR 520 floating bridge being built on Lake Washington; the supplemental pontoons provide stability and flotation, and the cross pontoons cap the bridge on the east and west ends. Crews will build a total of six cycles of new pontoons in Aberdeen.
Don't walk this way
A section of walkway swings from a crane over the SR 520 pontoon construction site after it's removed from top of the casting basin gate. After setting it on land, crew will remove the basin gate and tow six massive condrete pontoons from the basin. Photo taken April 28, 2013.
Progress continues on the SR 520 Pontoon Construction Project, as the second cycle of new pontoons left the Aberdeen casting basin overnight April 28 and 29, 2013. The late-night timing coincided with the favorable high tide needed for float-out.
In the second cycle, crews built three longitudinal pontoons, two supplemental stability pontoons and one cross pontoon. The 360-foot-long longitudinal pontoons are the backbone of the new SR 520 floating bridge being built on Lake Washington; the supplemental pontoons provide stability and flotation, and the cross pontoons cap the bridge on the east and west ends. Crews will build a total of six cycles of new pontoons in Aberdeen.