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Project Overview

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King County, as the primary service provider to the King County Flood Control District (District), is planning to repair two revetments on the Cedar River. These repairs will reduce flood risks to the Maple Valley Highway (SR 169), Cedar River Trail, local utilities, and private property.

A revetment is a structure built along a riverbank to prevent erosion. Revetments are usually built with rocks, wood, plants, and other materials.

A portion of the damaged Tabor-Crowall revetment.
A portion of the damaged Tabor-Crowall revetment can be seen in the photo above. The extent of the Tabor-Crowall revetment shown in this visual is approximate and is for informational purposes only.

The Tabor-Crowall and Brodell revetments are located on the right bank of the Cedar River and were damaged by flood waters in 2020. The Tabor-Crowall revetment is located just upstream of the Riverview Park footbridge. The Brodell revetment is located farther upstream, next to the Maple Valley Highway, Cedar River Trail, and properties on Shelton Avenue Southeast.

A map with the locations of the Tabor-Crowall and Brodell revetments in relation to the Maple Valley Highway.
The locations of the Tabor-Crowall and Brodell revetments in relation to the Maple Valley Highway.
A portion of the damaged Brodell revetment.
A portion of the damaged Brodell revetment can be seen above. The Brodell revetment is built around a fishway, which allows fish to access a stream that flows into the Cedar River. The extent of the Brodell revetment shown in this visual is approximate and is for informational purposes only.
An additional section of the Brodell revetment.
An additional section of the Brodell revetment can be seen above. The extent of the Brodell revetment shown in this visual is approximate and is for informational purposes only.

King County expects to complete this project by 2025. Repairing these revetments reduces flood risks to people and property. Timely action may also minimize damage to fish habitat and prevent the need for costly emergency repairs in the future.

Project Goals

  • Reduce flood risks to people, community resources, and infrastructure.
  • Maintain or improve habitat for salmon and other fish.
  • Limit disruptions to use of parks and the Cedar River Trail.
  • Limit construction traffic impacts on the Maple Valley Highway.

Project Schedule

Activity Date
Design and Permitting 2020-2023
Construction Summer 2024
Site Monitoring and Project Closing 2024-2025

Construction Impacts

Construction may temporarily impact use of roads, sidewalks, trails, and parks in the area.

Construction for an emergency repair on the CRT2 revetment.
King County completed an emergency repair on the CRT2 revetment along the Cedar River in 2020.

King County is working to limit the impacts of construction. As the project is designed and permitted, we will update this page with impacts to roads, sidewalks, trails, or parks in the area. We will also post signs and flyers near the project site and notify local businesses and residents with updates as construction is planned and completed. If you are interested in receiving updates, please sign up for the project email list.

For more information about the Tabor-Crowall and Brodell Revetment Repair Project, please contact Alex Hughan, King County River and Floodplain Management Section, Water and Land Resources Division, Department of Natural Resources and Parks.