Thurston County construction and travel updates

Thurston County

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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 are converting the existing interchange into a diverging diamond interchange. Depending on the weather, the work could be complete by late 2020. All users of this interchange are strongly encouraged to sign up to receive WSDOT email updates and see more at the project webpage.

9 p.m. Tuesday, Jan. 28 to 5 a.m. the following day

  • Northbound Marvin Road right lane closure.

9 p.m. Wednesday, Jan. 29 to 5 a.m. the following day

  • Marvin Road on-ramp to southbound I-5 will close.


  • Single-lane closure for northbound I-5 exit to Marvin Road. One lane will remain open.

Coming soon:

  • During the first dry weekend, crews will close the Marvin Road on-ramp to southbound I-5 to all travelers around-the-clock for the entire weekend. WSDOT will announce in advance when this is scheduled. 

I-5/I-5 Over Pacific Avenue - Seismic Retrofit
I-5 Region: Olympic County: Thurston Location: Milepost(s) 107
Contact: Brian Whitehouse, 360-412-3420
Description: This project is intended to help reduce potential damage in the event of an earthquake by strengthening four columns that support bridged sections of I-5. This project is part of WSDOT’s seismic retrofit program established in 1991 to help make bridges less susceptible to earthquake related damage. During the work, Pacific Avenue will have long-term lane closures and sidewalk closures in each direction. There will be no restrictions for any ramps or I-5. 
Work Schedule: As soon as Monday, Jan. 27, crews will reduce eastbound Pacific Avenue to one lane approaching the overpass. The around-the-clock single-lane closure will allow crews to create a work zone. One sidewalk is closed around the clock. One sidewalk remains open for pedestrians and bicyclists. 

I-5 - Olympia Area Southbound - Congestion Management
I-5 Region: Olympic County: Thurston Location: Milepost(s) 109 to 105
Contact: Doug Adamson, 360-357-2716
Description: Shoulder closures at four on-ramps to southbound I-5 between Martin Way in Lacey and Henderson Boulevard and Olympia. WSDOT will activate the ramp meters during early winter. Project web page
Work Schedule: 7 a.m. to 4 p.m. each weekday through Friday, Jan. 31.

Highway: I-5 and US 101 Region: Olympic County: Thurston Location: Milepost(s) I-5 milepost 104 - US 101 milepost 367.4
Contact: Andy Larson, 360-874-3000
Description: Shoulder closures for Deschutes Way Southwest ramps to northbound US 101 and southbound I-5.
Work Schedule: 8 p.m. Friday, Jan. 31 to 5 a.m. Saturday, Feb. 2. 

Highway: I-5 Region: Olympic County: Thurston Location: Milepost(s) 111
Contact: Doug Adamson, 360-357-2716
Description: Southbound shoulder closure for electronics maintenance.  
Work Schedule: 8 a.m. to 3 p.m. Monday through Thursday, Jan. 27-30.