Thurston County construction and travel updates

Thurston County

  • Sign up for email updates for major roadwork on state highways in Thurston County. 


I-5 - SR 510 Interchange - Reconstruct Interchange
I-5 Region: Olympic County: Thurston Location: Milepost(s) 110 to 112.5
Contact: Doug Adamson, 360-357-2716
Description: Crews have upgraded the Marvin Road overpass into a diverging diamond interchange. Users of this interchange are strongly encouraged to sign up for email updates and see more at the project webpage.

Each weeknight as early at 8 p.m. 

  • Travelers can expect occasional weeknight night single lane closures for both directions of I-5. 

5 a.m. Tuesday, Sept. 8 to 8 p.m. Friday, Sept. 25

  • Reduced lanes around-the-clock to continue construction efforts.
  • Due to continued congestion, travelers are encouraged to use alternate routes and add plenty of extra time to help prevent delays.  

9 p.m. Sept. 24 to 5 a.m. the following day

  • Marvin Road ramp to southbound I-5 will close

8 p.m. Friday, Sept. 25 to 5 a.m. Monday, Sept. 28 - Final total closure of the overpass and ramps

  • Marvin Road overpass between Quinault Drive Northeast and Britton Parkway Northeast/Willamette Drive Northeast.
  • Marvin Road on-ramps to southbound I-5 and northbound I-5.
  • Northbound and southbound I-5 exits to Marvin Road.
  • Work and associated closures could be rescheduled due to weather. 

Highway: I-5 Region: Olympic County: Thurston Location: Milepost(s) 85.5 - 103.0
Contact: Jeff Hastings, 253-983-7550
Description: Left and right shoulder closures of both directions of I-5 and ramps for catch basin cleaning. 
Work Schedule: 9 a.m. until 3 p.m. Monday through Thursday, Sept. 21-24.

Highway: SR 8 Region: Olympic County: Thurston Location: Milepost(s) 18 to 19
Contact: Brent Schiller, 360-538-8530
Description: Single-lane closure in both directions for environmental monitoring. 
Work Schedule: 8 a.m. until 4 p.m. Wednesday through Friday, Oct. 7-9.

Highway: US 12 Region: Olympic County: Thurston Location: Milepost(s) 38.8
Contact: John Romero, 360-570-6750
Description: One-way alternating traffic for installation of lane markings. 
Work Schedule:  7 a.m. until 5 p.m. Monday through Friday, Sept. 21-25.