Helix Pedestrian Bridge

Seattle, WA
Amgen Corporation
Services/Project Type
Structural Engineering
This 420-foot-long pedestrian bridge serves as the signature gateway to the research campus of one of the world’s largest biotechnical firms.  The design references the vital research underway at this campus:  the arches create the outline of the basic DNA helix shape, while the deck support and roof trusses complete the double-helix form.  The twisting and curving steel structure crosses over 11 heavily used railroad tracks providing Amgen employees a convenient and safe connection between public transportation and the research campus. It also provides the public access to Elliott Bay Park, adjacent to the campus.  KPFF provided structural design of this international award-winning pedestrian bridge.
Awards & Recognition

Seattle Design Commission Commendation (2001), National Council of Structural Engineers Association, Outstanding Project (2004), Canadian Institute of Steel Construction, Krentz Award (first structure outside of Canada to receive this award -  2004), Selected for Presentation at the International Footbridge Competition, Venice (2005), Selected for Presentation at the 6th Annual International Symposium for Steel Bridges, Prague (2006)