As the new State Route 520 floating bridge nears completion in Seattle, the 31 original bridge pontoons are ready for removal. Rather than breaking them up, the Washington Department of Transportation (WSDOT) will tow them through the Seattle ship canal and Ballard Locks to Puget Sound.  In an epic display of recycling, they will be

I previously told you about some upcoming Seattle tunneling projects. Here now is a link to artist renderings of the new SR 520 floating bridge project, which will raise the existing bridge up above the pontoons, making space for maintenance works and storm water treatment and fire suppression utilities underneath: www.flickr.com/photos/wsdot/6871707294/in/set-72157629307832804/

 

The photo site has