The first pontoon enters the Locks
A 360-foot-long concrete bridge pontoon entered the Hiram M. Chittenden Locks on Aug. 11, 2012. The 75-foot-wide pontoon was successfully floated through the locks and towed through the Lake Washington Ship Canal, and marked a major milestone towards replacing the aging SR 520 bridge.
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.
The first pontoon enters the Locks
A 360-foot-long concrete bridge pontoon entered the Hiram M. Chittenden Locks on Aug. 11, 2012. The 75-foot-wide pontoon was successfully floated through the locks and towed through the Lake Washington Ship Canal, and marked a major milestone towards replacing the aging SR 520 bridge.
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.