Trolley Trail Bridge Feasibility Study

Project description: Clackamas County is assisting the City of Gladstone, who received federal grant funding from the Regional Flexible Funds Allocation (RFFA), in studying the feasibility and location of constructing a bridge in the abandoned Trolley Trail Bridge crossing of the Clackamas River.

Studying the feasibility of replacing the Trolley Trail Bridge for pedestrians and bicyclists would provide a much-needed active transportation link across the Clackamas River linking the City of Gladstone and Oregon City, and become a signature landmark for the popular Trolley Trail.

Updated : 1/30/20

Current activities: Draft environmental baseline reports are being finalized.

Schedule: The Final Design Concept Alternatives Report was completed in January of 2020. The City of Gladstone received an Active Transportation Grant from Metro to perform the design, engineering and permitting of the replacement bridge. The design is anticipated to start in early 2021

Project impact on traffic: None

Contact: Joel Howie, Project Manager —, 503-742-4658

Engineer: Doug Johnson, PE (David Evans & Associates)

Consultant: David Evans & Associates

You might like to know: A meeting was held at the City of Gladstone on 10/31/19 to discuss the feasibility study and the draft bridge concepts.


  • Estimated cost of the feasibility study: $225,000 ($202,000 approximately from federal RFFA grant)
  • Estimated cost of the design: $1,228,000 ($1,101,884 approximately from federal RFFA grant
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