Reeder Road Culvert Replacement

In fall 2026, we will install a culvert under NW Reeder Road where it crosses Dairy Creek Slough.

A map graphic showing the location of the project site where Dairy Creek Slough crosses under Reeder Road, with a locator map showing the location near the center of the eastern shore of Sauvie Island.
  • Location: NW Reeder Road crossing at Dairy Creek (see map)
  • Schedule: September to December 2026
  • Estimated Cost: $2.7 million
  • Funding Source: County road funds

Project Description

We are installing a culvert under NW Reeder Road at Dairy Creek Slough. This will replace the culverts that partially collapsed in early 2022 and created large sinkholes in both lanes.

In 2022, we made temporary repairs to reopen the road. This work in 2026 will permanently repair the damage.

Traffic Impacts

Reeder Road remains open during construction with traffic using a one-lane detour road around the work area. The detour road is a minimum of 12 feet wide, and will remain in place through December 31, 2026.

We have installed temporary stop signs for the duration of the work, and flaggers will direct traffic at times. When flaggers aren't present, please use caution and treat the detour road as a two-way stop.


We are interested in your feedback on this project. Please fill in the form below if you have comments, questions or suggestions.
 

Last reviewed October 16, 2026