South End Road Landslide Repairs

South End Road was damaged in March 2017 as a result of heavy rains. A state emergency declaration, which included Clackamas County, was signed by the governor that allowed Clackamas County to be eligible for the federal funding. Federal Emergency Relief Program (ERP) funds were received to stabilize the roadway and slope on South End Road at Milepost 3.8 (near Coffee Creek).


Updated: April 16, 2021

Clackamas County constructed temporary pavement repairs to these areas in the spring of 2017. Additional geotechnical exploration and surveying defined subsurface conditions and identified solutions to stabilize the slope.

Two types of retaining walls designed to prevent future slide activity will be built on the embankment along the north side of South End Road. A section of the roadway will be reconstructed where cracks have surfaced. Drainage will be improved on the west side of the road to carry water away from the roadway to prevent future damage.


Project design is complete. Construction is planned for March 2022. Construction is expected to be complete by Dec. 2023.

Traffic impacts

A full road closure is expected during construction between April 2022 and November 2022. Vehicles will be detoured along Warner-Parrot Road, Linn Ave, 5th Street and High Street.

Current activities

David Evans & Associates, an engineering consultant, is developing final project plans.


  • Estimated total project cost: $4.6 million
  • Funded through a Federal emergency relief program ($4 million) matched with County Road funds ($600,000)

Other Resources

Frequently Asked Questions


During construction there will be no pedestrian access. It’s possible a walkway could be provided for pedestrian access after work hours depending on the contactor agreement. 


No. Emergency funding can only be used for repairs to return the roadway to the previous condition.


We have investigated the cracking and are monitoring for landslide activity. At this time, no road closure is needed. If conditions require a road closure to maintain safety before construction begins, we will close the road. 


Yes. There will be a few hazardous trees to take down. As part of the City of Oregon City requirements, we will plant two new trees for every tree we need to remove. 

Department Staff
Joel Howie
Project Manager