Construction of new roundabout on SR 9 and South Lake Stevens Road in Lake Stevens begins Feb. 21

First of two planned full closures of SR 9 scheduled for weekend of Feb. 25-28

LAKE STEVENS – A round of changes are about to come to the intersection of State Route 9 and South Lake Stevens Road in Lake Stevens, beginning Monday, Feb. 21.

Interwest Construction, Inc., contractor crews working for the Washington State Department of Transportation will build a roundabout at that intersection aimed at improving safety and mobility.

What to expect

This project involves at least two weekend-long closures of SR 9 between 20th Street Southeast and 32nd Street Southeast. The first of those closures is scheduled to start at 9 p.m. Friday, Feb. 25, and continue through 4 a.m. Monday, Feb. 28. During the closure crews will:

  • Realign SR 9, shifting traffic toward the east side.
  • Begin work on the west side, on South Lake Stevens Road.
  • Close access to SR 9 from South Lake Stevens Road.

Signed detours will be in place for local and through traffic.

There will also be nighttime weekday and weekend lane closures on SR 9. Those closure details will be shared as they become available. The project is expected to be complete by this fall.

Things will be different

Beyond the roundabout, the existing westside intersection of South Lake Stevens Road and SR 9 will be eliminated during the first weekend-long closure on Feb. 25, requiring construction of a new street to re-connect it. That new street will be built by late summer. More details are available on the project webpage.

Roundabout features

Roundabouts are designed to make intersections safer and more efficient for drivers. For this intersection, it’s estimated this new roundabout will reduce collisions by at least 50%.

“With planned development also coming to this area from the city of Lake Stevens, WSDOT is demonstrating a commitment to improve safety at this intersection,” project engineer Mark Sawyer said.

The WSDOT website has more information about roundabout benefits.

Roadway closures will be listed on the @WSDOT_traffic Twitter, the Puget Sound area weekly travel planner, and people can also sign up for email alerts.

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