Engineering Projects & Information

The Engineering division is comprised of our technical and design people, including surveyors, engineers, inspectors, property and permitting services agents, and other professionals. These folks work together to design and and oversee the construction of projects throughout the county, and help the public through the permitting and construction of private projects.
We will endeavor to make project status and information available to the public on our website, and also using Twitter for projects that have a major impact on the public. Should you have a question about one of our projects, check here for the project coordinator, or call us at (360)867-2300. You can also call us with questions about survey or right-of-way.

To see the project summary pages on our website you will need to have the Adobe Reader or Acrobat plug-in installed (available from Adobe ) and enabled on your browser.To view the on-line plans at Builders Exchange, you will be redirected to their website. You will need to install the Fastbid viewer plug-in to view the plans.The link to the FastBid viewer and installation instructions are available at the Builder's Exchange Website when you click on the Terms of Use agreement, and then the actual project.

Thurston County is installing an innovative safety treatment to improve driver safety. A two million dollar federal highway safety grant is funding the installation of high friction surfacing at many locations throughout the county. This treatment is considered a proven method of reducing crashes and the following video highlights this new safety improvement. The video was created in partnership with Washington Department of Transportation and Washington Traffic Safety Commission.
To watch this 30-second video, click here.

For information regarding the lane closure on Independence Road, please CLICK HERE.

To see the summer work road list, Click Here!

  Projects may be listed as "On Hold" for weather or agency reasons.
Proposed Closure of 188th Avew SW 188th SW near Moon Rd PROPOSED 08/03/2018 COMMUNITY SURVEY LINK
High Friction Surface Treatments throughout the county ACTIVE 06/28/18  
Yelm Hwy & Meridian Rd Yelm Hwy & Meridian Rd DESIGN 11/08/17
Delphi Rd SW 32nd Ave to 62nd Ave SW AGENCY HOLD
Mullen Rd Upgrade City Limits -Carpenter Rd SE DESIGN
Steilacoom Road Phase 1 Marvin Rd to Pacific Ave DESIGN
Fish Passage Enhancement Program Countywide ACTIVE 06/28/18
Independence Road Safety Project Independence Rd SW, DESIGN 2/26/18
US 12 Roundabout Sargent Rd & US 12 DESIGN 04/03/2018
Old Hwy 99 Roundabout Old Hwy 99 & 198th St SW DESIGN 04/03/2018
MidBlock Crosswalk Study Pacific Ave SE, Yelm HWY SE STUDY 04/03/2018
Marvin Rd Corridor Project 25th Ave SE to SR510 DESIGN 06/28/18  
2018-2025 Grand Mound construction projects Grand Mound UGA IN PROGRESS 07/16/2018  

Thurston County Public Works
9605 Tilley Rd S
Olympia, WA 98512
360-867-2300   TDD: 711 or 800-833-6388