Project Complete
This project was completed in 2025.
Delridge Pedestrian Bridge Seismic Retrofit
Updated April, 2025
What's Happening Now?
Construction on retrofits to help the Delridge Pedestrian Bridge better withstand earthquakes is complete!
Here’s the major improvements we’ve made to the bridge:
- Wrapped parts of the bridge in carbon fiber to make it stronger.
- Applied surface sealant to increase safety and reduce future maintenance.
- Added supports to the ramps to help them last longer and stay safer during an earthquake.
- Replaced concrete and reinforcing in the bridge structure to provide better support.
- Upgraded the handrails for better stability and safety.
The collage below shows three images. The top frame shows the Delridge Pedestrian Bridge, which provides a safer and more accessible way to cross Delridge Way SW. The bottom left image shows the completed bridge deck with new sealant applied. The bottom right image shows the curved ramp leading up to the bridge with upgraded handrails.
About the Project
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 Delridge Pedestrian Bridge. The Delridge Pedestrian Bridge is an older bridge built prior to modernizing the seismic design code. The bridge serves as a community asset, particularly for people who live or work at the Cooper School Artist Lofts/Youngstown Cultural Arts Center and want to access the Delridge Playfield, Youngstown Cultural Arts Center, and Southwest Youth and Family Services building.
The photo above shows the Delridge Pedestrian Bridge, facing south.
The Delridge Pedestrian Bridge now has seismic upgrades that strengthen its structure and help it better withstand future earthquakes.
Project Area
Overhead view of the Delridge Pedestrian Bridge and surrounding area.
Project Schedule
| 30% Design | Complete |
| 60% Design | Complete |
| 90% Design | Complete |
| Final Design | Complete |
| Construction Begins | April 2024 |
| Project completion | April 2025. |
Funding
The project is 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.
Get Involved
Do you have questions about this project? Contact us:
- Email the project team at BridgeSeismicRetrofit@seattle.gov
- Leave a voicemail at (206) 775-8734. A project representative will return your call.
Materials
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