SR 9 - SR 204 Intersection Improvements

Project news

  • During stage two construction, travelers can expect either single lane reductions or alternating traffic on State Route 9 in Lake Stevens between State Route 204 and Market Place during weeknights (9 p.m. to 5 a.m. Monday through Friday). When SR 9 traffic is alternating, Market Place will also be fully closed at the SR 9 intersection.
  • This project is being constructed in stages. Stage one is complete. Stage two started June 14 and will continue into 2022.
  • Be in the know! Sign up for email updates for this project and other Snohomish County projects.

In 2015, the Legislature provided funding for WSDOT to improve mobility and access at the State Route 9/204 intersection in Lake Stevens. Congestion at this intersection affects Snohomish County commuters as well as regional and freight traffic.  

Early planning and design work resulted in a preferred alternative design for the SR 9/SR 204 intersection. During this phase, the project team conducted Stakeholder Advisory Group meetings, open houses, business forums, and community outreach to ensure the final design incorporated community priorities and met the project needs.

The project team is advancing design and construction of the preferred alternative design, featuring roundabouts, added lanes, and improved access points to improve traffic flow. Construction will occur in stages. Construction of stage one, which included a new southbound lane near Market Street is complete. The second stage, which includes construction of a northbound lane between 4th Street Southeast and 4th Street Northeast, began on June 14, 2021 and will continue into 2022. The project team is continuing to refine the design for the third stage which will include construction of the roundabouts. 

Needs & benefits

The improvements planned for the SR 9/SR 204 intersection in Lake Stevens use roundabouts to diffuse traffic through the economic center of Lake Stevens.

  • Improved mobility: Improves traffic flow, trip reliability, freight movement and safety.
  • Improved access to local businesses.
  • More choices for travel options by improving transportation connections for pedestrians, bicyclists, transit riders and drivers.


  • 2015: Project funded through Connecting Washington funding package
  • 2016 to 2019: Public outreach and design options development
  • Mid-2019: Select preferred design alternative
  • 2018 to 2021: Project design
  • Mid-2019: Stage one construction of new southbound lane near Market Place began
  • June 2021: Stage two construction began
  • Mid-2022: Stage three construction of roundabouts begins
  • 2023: Construction complete


Financial Data for PIN 100910K
Funding Source Amount ($ in thousands)
2003 Gas Tax (Nickel Funding) $0
2005 Gas Tax (TPA) $0
Pre-Existing Funds (PEF) $0
CWA $69,430
Total $69,430