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
Highway:
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.

Expect heavy congestion, consider alternative routes as construction continues

  • The Marvin Road overpass has been converted into a diverging diamond interchange. 
  • Travelers are encouraged to follow the signs, lines and traffic signals as traffic is briefly directed to the left side of the overpass before taken back to the right.
  • While WSDOT will keep people moving, travelers can expect continued congestion. Crews must continue additional work before the interchange is complete. Added congestion due to around-the-clock lane closures could continue into mid-September. Go early or late in the day, consolidate trips, or use alternative routes. 

9 p.m. Monday, Aug. 18 to 5 a.m. the following day
Marvin Road to southbound I-5 will close 
Northbound I-5 exit to Marvin Road will close. Northbound I-5 exit to Quinault Drive/Galaxy Way will remain open. 

9 p.m. Tuesday, Aug. 19 to 5 a.m. the following day
Marvin Road on ramp to northbound I-5 will close. 
Right lane of northbound I-5 approaching Marvin Road will close. 

9 p.m. Tuesday, Aug. 19 to 6 a.m. the following day
Northbound I-5 exit to Marvin Road will close. Northbound I-5 exit to Quinault Drive/Galaxy Way will remain open. 

9 p.m. Wednesday, Aug. 20 to 5 a.m. the following day
Marvin Road on ramp to northbound I-5 will close. 
Right lane of northbound I-5 approaching Marvin Road will close. 

9 p.m. Thursday, Aug. 21 to 5 a.m. the following day
Marvin Road on ramp to southbound I-5 will close.  
Right lane of southbound I-5 will close from milepost 112 to Marvin Road. 

Highway: US 12 Region: Olympic County: Thurston Location: Milepost(s) 38.8
Contact: John Romero, 360-570-6750
Description: Crews will build a modern roundabout at the intersection of US 12 and Anderson Road. Travelers will keep moving with a single-lane of alternating traffic with temporary traffic signals and a reduced speed limit. 
Work Schedule: See below: 

As soon as Wednesday, Aug. 19

  • As crews have completed one-half of the roundabout, crews will switch traffic onto the completed section. Travelers can expect brief delays during the traffic switch. Traffic will continue to use that section while crews build the second half of the roundabout. 

Around the clock

  • ​Travelers using the intersection of US 12 and Anderson Road Southwest near Oakville will see a temporary traffic signal. The new temporary traffic signal will help keep traffic moving around the clock as crews build the new roundabout.
  • The US 12 speed limit approaching the work zone is reduced to 25 MPH. Travelers are encouraged to watch their speeds and give crews the room they need to work.

Highway: I-5 Region: Olympic County: Thurston Location: Milepost(s) 108.2 - 107.4
Contact: Jeff Hastings, 253-983-7550
Description: Southbound I-5 double lane closure for bridge expansion joint repair.  
Work Schedule: 9 p.m. Monday, Aug. 17 to 4:30 a.m. the following day. 

Highway: I-5 Region: Olympic County: Thurston Location: Milepost(s) 120.1 - 104
Contact: Jeff Hastings, 253-983-7550
Description: Southbound I-5 left lane closure for catch basin cleaning. 
Work Schedule: 10 p.m. Wednesday through Friday, Aug. 12-14 to 4 a.m. each following day. 

Highway: I-5 Region: Olympic County: Thurston Location: Milepost(s) 113 to 114
Contact: Jeff Hastings, 253-983-7550
Description: Northbound I-5 reduced to a single lane and the exit to Nisqually will close for concrete panel repair.  
Work Schedule: 10 p.m. Saturday, Aug. 15 to 11 a.m. the following day. 

Highway: SR 8 Region: Olympic County: Thurston Location: Milepost(s) 10.5 to 12
Contact: Brent Schiller, 360-538-8530
Description: Left lane closure in both directions for vegetation management. 
Work Schedule:  See below:
7:30 a.m. until 4 p.m. Tuesday, Aug. 18 for westbound left lane closures. 
8 a.m. until 4 p.m. each Monday through Thursday, from Aug. 20-27 for eastbound left lane closures. 

Highway: SR 121 Region: Olympic County: Thurston Location: Milepost(s) 6.3
Contact: Jeff Hastings, 253-983-7550
Description: Flaggers will direct traffic through the intersection for asphalt repair. 
Work Schedule: 8:30 a.m. until 3:30 p.m. Monday and Tuesday, 18-20.