Sauk Prairie Road / Everett Creek Culvert Replacement


Snohomish County is proposing to replace an existing culvert with a larger culvert on Sauk Prairie Road near Darrington, to alleviate drainage problems. The project location is approximately half a mile east of the roadway’s intersection with Crawford Loop Road. Under existing conditions, flooding is occurring between Everett Creek south of the roadway and Thompson Creek on the north side. The proposed culvert will be installed at the low point of the road so that Everett Creek and flow from a wetland pond can pass under the roadway. The raised roadway will eliminate the water on the road and improve fish passage. A 700-foot section of the road will be raised to accommodate the culvert.


  • Project design is expected to be completed in 2019
  • Construction is expected to begin in 2020 and have a duration of 8-12 weeks

Traffic Impact

During construction, a full road closure will be required. Drivers will be detoured via Crawford Loop Road.


The project is funded by the Snohomish County Roads Fund and construction is expected to cost approximately $1 million.

Environmental Permitting and Regulations 

The project will require federal, state and local permits and approvals. To comply with the State Environmental Policy Act (SEPA), an Environmental Checklist has been prepared and a Determination of Non-Significance issued. These documents are provided below, along with a vicinity map.