33rd Ave W Pedestrian and Bicycle Bridge

Updated June 18, 2021

What's happening now?

Thank you for sharing your feedback on the 3 proposed design alternatives for the 33rd Ave W Bridge!

Thank you to all the community members who participated in our 30% design alternatives survey this June. We received 412 survey responses. You can view the survey summary here or under "Project Materials" at the bottom of the page.

The feedback you shared is being reviewed by the project team and will be one of the factors considered when choosing which concept to move forward for 60% and 90% design. If you weren't able to complete the survey, you can review the 3 proposed design alternatives below.

30% design alternatives under consideration

Alternative 1: Rehabilitation of existing bridge

This concept includes:

  1. Keeping existing superstructure
  2. Widening bridge from 6 feet to 10 feet
  3. Installing new steel girders and aluminum decking/railing
  4. Repairing existing timber support frame
  5. Building a new south abutment

Considerations:

  1. Lowest up-front cost
  2. Not vertically Americans with Disabilities Act (ADA) compliant

Aerial view 

An aerial view of option one for the 33rd Ave W Ped and Bike Bridge.

Profile view 

A Profile view of option one for the 33rd Ave W Ped and Bike Bridge.

Example image: Aluminum decking and railing similar to proposed design

An example of what option one for the 33rd Ave W Ped and Bike Bridge could look like.

Alternative 2: Replacement of existing bridge - same alignment 

This concept includes:

  1. Removing and replacing existing structure
  2. Installing a new prefabricated span
  3. Building new north and south abutments
  4. Widening the bridge from 6 feet to 14 feet

Considerations:

  1. Same alignment and slope as the existing bridge
  2. Higher up-front cost, lower long-term costs
  3. Not vertically ADA compliant, but widened surface will be an improvement from current state 

Aerial view 

An aerial view of option two for the 33rd Ave W Ped and Bike Bridge.

Profile view 

A profile view of option two for the 33rd Ave W Ped and Bike Bridge.

Example image: Truss pedestrian bridge similar to proposed design 

An example of what option two for the 33rd Ave W Ped and Bike Bridge could look like.

Alternative 3: Replacement of existing bridge - angled alignment

This concept includes:

  1. Removing and replacing existing structure
  2. Installing a new superstructure and deck
  3. Building new north and south abutments
  4. Building a new retaining wall on the south approach
  5. Widening the bridge from 6 feet to 14 feet

Considerations:

  1. Realignment of the bridge to be within the city right-of-way
  2. Higher up-front cost, lower long-term costs
  3. Vertically ADA compliant

Aerial view 

An aerial view of option three for the 33rd Ave W Ped and Bike Bridge.

Profile view 

A profile view of option three for the 33rd Ave W Ped and Bike Bridge.

Example image: Concrete pedestrian bridge similar to proposed design 

An example of what option three for the 33rd Ave W Ped and Bike Bridge could look like.

What's next?

We expect 60% and 90% design to be complete by the end of the year.

This project is only funded up to 90% design through the Levy to Move Seattle. Final design and construction are not currently funded. After we reach the 90% design milestone, we'll submit this project to the Roadway Structures Department, who will then decide if it'll move into construction.

To stay up-to-date with the latest project information, sign up to join our project email list.  

Project overview

The Seattle Department of Transportation (SDOT) is evaluating the feasibility and options to rehabilitate or to replace the 33rd Ave W Pedestrian and Bicycle Bridge in Magnolia. While still safe to use, the bridge is showing signs of deterioration. This timber bridge connects people walking and biking across an active railroad corridor to Commodore Park and the Ballard Locks area. There are no plans to remove the 33rd Ave W bridge, and the bridge is still safe to use.

Project location 

Located in the Magnolia neighborhood of Seattle, the 33rd Ave W Pedestrian and Bicycle Bridge is located near the Salmon Bay waterfront. The bridge is an important part of Seattle's biking and walking network and links Magnolia to Ballard and the Burke-Gilman Trail. The bridge crosses an active railroad corridor, which runs through the city from the Industrial District in the south to Broadview in the northwest.

Map of 33rd Ave W Bridge

Schedule

We're aiming to complete early design (30%) by  June 2021, with 60% and 90% design continuing into winter 2021.

Funding

This project is funded through 90% design. Final design and construction are currently not funded for this project.

Stay informed

To stay up to date on the project, click here to sign up to receive project email updates.

Project materials

Outreach Summary Report (July 2021)

Survey Summary Report (June 2021)

Online Presentation Summary (September 2020)

Factsheet (August 2020)

Factsheet (May 2020)

Translation

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