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 near Coffee Creek (milepost 3.8).

Status

Updated: Dec. 15, 2022

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.

Schedule

Construction is planned through Jan. 31, 2023 to complete construction of the retaining walls, placement of the base lifts of asphalt, installation of trees and shrubs, and temporary striping. The final layer of asphalt and permanent striping will be completed in the spring/summer of 2023. All work is expected to be completed by June of 2023.

Traffic impacts

South End Road will be closed from 7 a.m., April 17 through 6 p.m., April 20, 2023, 24 hours a day. This closure is needed for the final roadway paving near the retaining wall constructed last fall. All traffic will be detoured along Warner-Parrot Road, Linn Ave., 5th St. and High St. 

Final striping work will follow two weeks later and can be done with traffic flaggers, so expect traffic delays up to 20 minutes.

The closure and paving activities depend on dry warm weather. Watch for update closures dates on the project warning signs on South End Road.

Current activities

  • Preparing for final paving and permanent striping

Funding

  • 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

South End work South End Rd Construction South End Road landslide repairs
South End Road landslide repairs

Frequently Asked Questions

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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. 

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

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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. 

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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. 

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Contact
Department Staff
Joel Howie
Project Manager
503-742-4658
Stan Monte
Construction Project Manager
503-742-4678

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.

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