• Project

SR 3 - Freight Corridor - New Alignment

Project overview

State Route 3 in Belfair regularly experiences congestion during peak commute hours, especially as numerous drivers stop and make turns. Heavy congestion has the potential to negatively affect emergency response times and economic vitality. This project would improve travel times for regional traffic, reduce the volume of regional traffic in Belfair, and help reduce the potential for collisions.

After an in-depth study that included traffic patterns and the number of travelers using this area, WSDOT will use single-lane roundabouts to connect the SR 3 Freight Corridor with existing SR 3 at SR 302 and near Southwest Lake Flora Road. The project will also add two roundabouts for future connections to local roads to be built by Mason County. The new two-lane route will help reduce regional congestion through the Belfair business core.

Summer 2026 - Winter 2028
Project status
$66.9 million

What to expect

Construction has not yet started. WSDOT works to keep people moving during construction. Most of the proposed new roadway is off SR 3. 

Crews will build roundabouts at each connection to the new roadway. Workers will create lanes for SR 3 travelers to move through each work zone.

SR 3 Belfair Freight Corridor proposed alignment