Roads' plans and reports for unincorporated King County

ADA Transition Plan

The ADA Transition Plan guides our efforts to make sidewalks, curb ramps and street crossings on unincorporated King County roads more accessible to all.

King County Traffic Safety Action Plan

The Department of Local Services Road Services Division is developing a Traffic Safety Action Plan to improve traffic safety. It will be built using public input, crash and safety data, and expert review. The division is using this plan to suggest where improvements are needed and identify possible solutions.

Road Services' Business Plan

The 2023-2024 Roads Business Plan identifies the cost of delivering a road network that reflects the needs of all users, enhances the quality of our communities and environment, and supports a healthy economy.

Strategic Plan for Road Services (SPRS)

The Strategic Plan for Road Services provides guidance for managing the decline of the road system and an understanding of system needs and anticipated service levels.

Transportation planning

Learn about King County's plans for transportation needs, concurrency, and the arterial classification system.

Bridge reports

Historic and Scenic Corridors Report

Issaquah-Hobart Road/Front Street Corridor Study

(12MB PDF - external link)

Red Brick Road Condition Assessment Report

(6MB PDF)

Stormwater Monitoring Final Report

(2MB PDF)

Traffic safety reports

Transportation Concurrency Update Report

(191KB DOC)

Transportation Needs Report

(85MB PDF)