Skip to main content
King County logo
Mobility ramp before, during, and after replacement.

The King County Road Services Division (Roads) recently completed a Draft Americans with Disabilities Act Transition Plan. This plan will guide our efforts to make sidewalks, curb ramps and street crossings on unincorporated King County roads more accessible to all.

This draft plan was developed using input from community members, an assessment of existing pedestrian facilities, and analyses of county policies, practices, and finances. The draft plan addresses all pedestrian facilities maintained by Roads, and does not include roads located inside city limits, highways, or trails.

Read the King County Road Services Draft ADA Transition Plan PDF 12MB
Please note: If you are having trouble opening this file, try resting your mouse cursor over the link, then right-mouse click. From the menu that appears, select "Save Target As" or "Save Link As" depending on your browser. Save the file to a designated location, then find the file where you saved it and open.

The public comment period is now closed

The public comment period closed on March 22, 2021. Roads is now reviewing the comments before finalizing the plan. Additional comments may be sent to Roads using the contact information below, however these comments may not be incorporated into the final plan. 

Thank you for your participation.


John Vander Sluis
Phone: 206-263-0621 TTY Relay: 711

Contact us

If you have additional questions, please contact John Vander Sluis, King County Road Services Division, at 206-263-0621 or email

Follow us on Twitter

Roads on Twitter

Find us on Facebook

Local Services on Facebook

ADA Transition Plan – The Unincorporated King County Road System

The map below shows the unincorporated King County road system. These roads are located outside of city limits, and do not include highways or trails.

Complex map showing the location of unincorporated areas of King County and unincorporated area roads managed by King County Road Services. Unincorporated King County roads are concentrated in the White Center-North Highline and Skyway-West Hill areas south of Seattle, the Fairwood area east of Renton, areas between the between Federal Way and Auburn city limits, and throughout the rural area on the eastern half of the county.
See a larger view of the map. PDF 8MB

Road Services contacts

If you need help with road maintenance and traffic safety issues in unincorporated King County, such as downed stop signs, signals that are out, or specific ADA requests — call our 24/7 Road Helpline at 1-800-527-6237 (1-800-KC-ROADS), 24 hours a day.

Staff contact

If you have additional questions, please contact John Vander Sluis, King County Road Services Division, at 206-263-0621 or email

Contact us

24/7 Road Helpline: 206-477-8100 or 1-800-527-6237

TTY Relay: 711

Twitter: @KCRoads