Sauk Prairie Road Culvert Replacement

Sauk Prairie Road, before and after

Description - Completed

Snohomish County Public Works completed construction on Sauk Prairie Road on August 27, 2020, more than a month ahead of schedule. The project raised the roadway to accommodate a new larger concrete box culvert, alleviating drainage problems and improving fish passage. The project location is approximately half a mile east of the intersection with Crawford Loop Road near Darrington. 
Sauk Prairie Rd Culvert

Sauk Prairie Rd, before and after


Construction for this project began in July 2020 and completed on August 28, 2020.

Traffic Impact

Sauk Prairie Road is open to traffic. During construction, a full road closure was required, and drivers were detoured via Crawford Loop Road. Landscape preparation work and further planting will be completed later in 2020.


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

Environmental Review

An environmental review and SEPA Checklist were completed for the proposed project in compliance with the State Environmental Policy Act (SEPA) on April 19, 2017.  Snohomish County Public Works determined that this project does not have a probable, significant adverse impact on the environment and has issued a Determination of Non-significance (DNS) on April 21, 2017.