Design competition: How to recycle the 520 floating bridge


A design competition presented by the WSU School of Design and Construction and AIA Seattle poses the question: how best to recycle and re-use the floating pontoons of the 520 bridge?

The Washington State Department of Transportation is requiring of the new bridge’s design-build team that it be reused or recycled in a sustainable fashion; current trends for the reuse of pontoons have been floating docks, breakwaters and piers, but what else could be done with such a feat of engineering?


The Transforming Seattle’s 520 Floating Bridge 2012 International Design Ideas Competition seeks design proposals which either utilize the bridge in its current state or take the bridge apart and reuse its pontoons at a new site on Lake Washington, Lake Union or in the Puget Sound in Washington State.

Re-using the ol’ floater is wonderfully complex challenge that will hopefully attract design minds from far beyond the hills of Seattle. Registration for the competition ends August 10th, with entry submissions due August 15th. Winners will be announced at the Seattle Design Festival on September 21st, 2012 with a first place award of $3000. More details at