Clackamas River (Trolley Trail) Preliminary Design

Status

Design phase

Updated: Jan. 18, 2024

The need remains for a transportation link for people that walk and bike across the Clackamas River to connect the cities of Gladstone and Oregon City. 

This phase of the project will identify a preferred bridge structure type and perform up to 30 percent engineering design. The bridge will replace the recently demolished Portland Ave Historic Trolley Bridge and connect the existing Trolley Trail, a shared-use path for bicyclists and pedestrians, to trails that exist along the Clackamas River on the Oregon City side of the river. 

The bridge design continues the work completed in a previous feasibility study. Clackamas County is assisting the City of Gladstone through the design process using the county's ODOT certification. 

Why

To improve active transportation access across the Clackamas River for pedestrians and bicyclists in the Gladstone and Oregon City areas. 

Schedule

Design: March 2024 – Dec. 2025

Traffic impact

No traffic interruptions during design phase.

Current activities

Project design

Funding

  • Project estimate $1.37 million 
  • Funding is provided from federal funds through the Metro 2022-24 Regional Flexible Fund Allocation Grant and from the City of Gladstone.

Bridge structure options

Bridge Structure Option #1 – Single-Span Steel Truss

#1 Single-Span Steel Truss

Bridge Structure Option #2 – Three-Span Precast Concrete Girder

#2 Three-Span Precast Concrete Girder

Bridge Structure Option #3 – Three-Span Steel Girder

#3 Three-Span Steel Girder

 

Contact
Department Staff
Joel Howie
503-742-4658

Phone:503-742-4691
Email:engineering@clackamas.us

150 Beavercreek Road Room #325 Oregon City, OR 97045

Office Hours:

Monday to Thursday
8 a.m. to 4 p.m.

Available by phone/email
Friday
8 a.m. to 3 p.m.