Project Complete
This project was completed in 2024.
NE 45th St Pedestrian Bridge Seismic Retrofit
Updated September 20, 2024
What's Happening Now?
We’ve completed work on retrofits to help the NE 45th Street Pedestrian Bridge better withstand earthquakes! The bridge will be fully reopened for people walking, biking, and rolling by September 20. Over the last 4 months, we:
- Installed carbon fiber wrapping to strengthen the bridge's beams and superstructure
- Strengthened foundations with reinforced concrete
- Repaired the damaged shear key at the south abutment
- Painted the Bridge with two coats of epoxy based paint and anti graffiti coating
Thank you for helping us improve the resiliency of the NE 45th St Pedestrian Bridge! If you have any remaining questions or concerns about the NE 45th St Pedestrian Bridge Seismic project, please contact us at 206-684-ROAD (7623) or 684-Road@seattle.gov.
Project overview
Earthquakes could have a major impact on Seattle’s infrastructure. To address seismic risks to city infrastructure, the City of Seattle established a bridge seismic program to assess how vulnerable the City’s bridges were to earthquakes, and to retrofit bridges to better withstand the potential impacts of an earthquake.
As part of the Levy to Move Seattle, 16 bridges were selected for seismic retrofits, including the NE 45th St Pedestrian Bridge. The NE 45th St Pedestrian Bridge is an older bridge built prior to modernizing the seismic design code. The bridge provides a more direct connection across NE 45th St for the Laurelhurst neighborhood.
The seismic retrofits to NE 45th St Pedestrian Bridge included several modifications to strengthen existing bridge components and reduce the bridge’s vulnerability to earthquakes. The following were major construction elements:
- Installed carbon fiber wrapping to strengthen the bridge's beams and superstructure
- Strengthened foundations with reinforced concrete
- Repaired damaged shear key at the south abutment
Project schedule*
30% Design | Complete |
60% Design | Complete |
90% Design | Complete |
Final Design | Complete |
Construction begins | June 2024 |
Retrofit complete | September 2024 |
Funding
The project was funded through the Levy to Move Seattle. Approved by voters in 2015, the 9-year, $930 million Levy to Move Seattle provides funding to improve safety for all travelers, maintain our streets and bridges, and invest in reliable, affordable travel options for a growing city.
Materials
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