Conway Creek (Aschoff Road) Culvert Replacement

Two culverts carrying Conway Creek under Aschoff Road in the Rhododendron area are damaged, undersized, and do not easily allow fish and wildlife to pass upstream and will be replaced with a modular bridge. 

Status

Planning phase

Updated: April 1, 2025 

Why

Why
To minimize potential impacts to the roadway due to flooding and to provide access for fish and other aquatic organisms to reach upstream cold-water habitat.  

Schedule

  • Design: June 2025 – October 2026
  • Right of way: Summer 2026 – Spring 2027
  • Construction: Summer 2027 – Winter 2027

Traffic impact

  • A road closure will be needed during construction.
  • Project is expected to take up to 3 months to complete.
  • Culvert work limited to a state-approved in-water work period of July 15 to August 31.

Current activities

  • Project in planning phase
  • Design phase to start in January 2024 pending grant funding approval
  • County preparing Request for Proposals for project design and permitting.

Funding

  • Project estimate $1.9 million.
  • Funding is provided from  Federal Culvert AOP grant funds and county road funds. 
Contact
Department Staff
Devin Patterson
devinpat@clackamas.us
503-742-4666

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.