11,000 ton SR 520 bridge pontoon in Shilshole Bay
The first concrete bridge pontoon for the replacement SR 520 bridge is shown floating in Shilshole Bay on Aug. 11, 2012.
Crews floated in the first longitudinal pontoon for the new SR 520 bridge through the Hiram M. Chittenden Locks on August 11, 2012. Arriving just after 6 p.m., the entire operation took around 45 minutes and was observed by hundreds of spectators enjoying the sunny Saturday in Seattle, Washington. This pontoon is the first of 77 that will make their way from their casting basins to Lake Washington during the next two years.
11,000 ton SR 520 bridge pontoon in Shilshole Bay
The first concrete bridge pontoon for the replacement SR 520 bridge is shown floating in Shilshole Bay on Aug. 11, 2012.
Crews floated in the first longitudinal pontoon for the new SR 520 bridge through the Hiram M. Chittenden Locks on August 11, 2012. Arriving just after 6 p.m., the entire operation took around 45 minutes and was observed by hundreds of spectators enjoying the sunny Saturday in Seattle, Washington. This pontoon is the first of 77 that will make their way from their casting basins to Lake Washington during the next two years.