Fairview Avenue North Bridge Replacement

City of Seattle, WA

The new Fairview Avenue N Bridge, located just north of downtown Seattle along Fairview Avenue North, is a 540-foot-long prestressed concrete girder bridge built to replace two aging bridges, one of which dated back to 1948. The bridge spans a portion of Lake Union know as Waterway No. 8. Nearly 9,000 vehicles and more than 185 buses use the bridge daily, as well as numerous bicyclists and pedestrians for recreation and commuting.

Fairview Avenue Bridge Replacement won APWA’s local and national award for Project of the Year in the structures and transportation category, $25M-$75M.


  • Transportation
  • Planning
  • Site / Utilities
  • Environmental

Project elements

As part of the Perteet-led TS&L phase, the team evaluated several bridge and non-motorized alternatives for routing vehicles, bikes and pedestrians across the bridge and improved connections to the Cheshiahud Lake Union Loop trail system.  Perteet led a team of up to 12 subconsultants that conducted alternatives analysis on the Fairview Avenue N Bridge project to identify the most appropriate and cost-effective solution while addressing seismic, vibration, geotechnical and environmental challenges. This analysis and subsequent final design included:

  • Evaluation of construction duration
  • Bike/pedestrian mobility during and after construction
  • Temporary bus transit stops and detours
  • Constructability
  • Business and neighborhood impacts
  • Potential extension of the trolley system across the bridge
  • Reconstruction of the popular floating walkway adjacent to the bridge
  • Improved illumination
  • Concurrence by the Seattle Design Commission and Landmark Board
  • Re-establishment of transit connections
  • Multiple environmental factors including in-water work restrictions
  • Overwater shading mitigation
  • Fish habitat improvements
  • Traffic control and dispersion during construction
  • Utilities and stormwater treatment/conveyance

Accepting the Fairview Avenue North Bridge Project of the Year Award is Perteet's project manager, Kurt Ahrensfeld, City of Seattle's project manager MariLyn Yim, HNTB's project manager, Kiva Lints, and HNTB's construction manager, Paki Perala (formerly from AECOM).