NE 45th St Pedestrian Bridge Seismic Retrofit

Updated July 3, 2024

What's Happening Now?

Construction on seismic retrofits to the NE 45th St Pedestrian Bridge has begun! Our crews have installed signage and barriers indicating the bridge is closed to people walking, biking, and rolling. Additionally, they are placing erosion control measures and beginning demolition to prepare the columns on the south side of the bridge for carbon fiber wrapping. Following demolition, crews will start building forms to pour concrete into and installing rebar that will reinforce the bridge’s columns.  

As a reminder, to complete the work as safely and efficiently as possible, the bridge will be closed to people walking, biking, and rolling during construction (4-5 months). We understand this closure will impact everyone who uses the bridge regularly and will do what we can to minimize impacts.

We will share regular email updates once construction begins.To receive project updates, sign up to Updated join our project listserv

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. 

We're not planning on changing the current use and operation of the bridge. The planned seismic retrofits to NE 45th St Pedestrian Bridge include several modifications to strengthen existing bridge components and reduce the bridge’s vulnerability to earthquakes. The following are major construction elements: 

  • Installing carbon fiber wrapping to strengthen the bridge's beams and superstructure 
  • Strengthening foundations with reinforced concrete 
  • Repairing damaged shear key at the south abutment 

What to expect during construction 

Construction began in June 2024 and is expected to last approximately 4-5 months. We will continue to share information on our webpage and through weekly email updates. You can sign up for our project listserv to receive email updates.   

To complete the work as safely and efficiently as possible, the bridge is closed to people walking, biking, and rolling for the duration of construction.  We understand this closure will impact everyone who uses the bridge regularly and will do what we can to minimize impacts.  

In addition to the above bridge closure, we currently anticipate the following construction impacts:  

  • Work in the public right-of-way near your home or business 
  • Temporary on-street parking restrictions, with "no park" signs placed 72 hours in advance
  • Temporary sidewalk and crossing closures for people walking and rolling. Detours will be provided and signed
  • Staged construction equipment and materials as well as noise, dust, and vibrations in the work area
  • Typical weekday work hours of 7 AM – 5 PM, Monday through Friday   

Project schedule* 

30% Design  Complete 
60% Design  Complete 
90% Design  Complete 
Final Design  Complete 
Construction begins  June 2024 

* The schedule is subject to change.  

Construction began in June 2024 and is scheduled to last approximately 5-6 months. Construction schedules are also subject to change and depend on factors such as weather and availability of crews and materials.


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 

We're committed to keeping you informed and working with neighbors to limit construction impacts to the extent feasible. Here are some ways to get more information about the project: 


Translation and interpretation 

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Greg Spotts, Director
Address: 700 5th Ave, Suite 3800, Seattle, WA, 98104
Mailing Address: PO Box 34996, Seattle, WA, 98124-4996
Phone: (206) 684-7623

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The Seattle Department of Transportation (SDOT) is on a mission to deliver a transportation system that provides safe and affordable access to places and opportunities for everyone as we work to achieve our vision of Seattle as a thriving, equitable community powered by dependable transportation.