Tumwater City Hall and all City facilities will be closed to the public until further notice. Visit our COVID-19 webpage for more information.

Online City ServicesResources for Businesses | Resources for Residents Tumwater 2 Go

Police, fire, and emergency medical response services are available as usual. Emergency? Call 9-1-1.

Old Highway 99 Corridor Study

Press Enter to show all options, press Tab go to next option

Old Highway 99 Corridor Study

March 2020 – December 2020

Project Description

The study examines multimodal safety and mobility issues and incorporates land use, environmental, and transportation considerations as necessary to determine preferred alignment, cross sections, intersection control, stormwater strategies, mitigation strategies, right-of-way needs, implementation strategies, and future project estimates.

Construction Schedule

This study will take place from spring of 2020 through the end of the year.

Road Closures

The work requires no road closures, with the exception of minor disruptions as needed to gather data about the existing conditions: roadway materials, elevations, etc.

Vicinity Map A  – Old Hwy 99 Corridor StudyPDF file

Vicinity Map B – Old Hwy 99 Corridor StudyPDF file

Project Funding

This project is funded by a grant from the State Transportation Program and local matching funds.

Project Personnel

If you have any questions or concerns, contact Transportation Manager, Mary Heather Ames, at (360) 754-4140, or email

Stay Connected

Register for “Construction & Traffic Alerts” to receive email notifications about traffic impacts and service interruptions as the project progresses at