Transportation System Plan

The Washington County Transportation System Plan (TSP) is a component of the Washington County Comprehensive Plan that defines the transportation system desired for the future and how it can be achieved. It identifies transportation systems, as well as outlines policies and strategies necessary to meet existing and future travel needs (motor vehicle, pedestrian, bicycle, transit and freight) based on projected population and employment growth and community aspirations.

The TSP was developed in coordination with local city and regional agency partners after a 3-year public involvement process, including the work of a Community Advisory Committee, Interagency Coordinating Committee and many community open houses and public events.


TSP Users' Guide

Cover of TSP Ref guideThe TSP Users' Guide is designed to provide a "user-friendly" version of the Washington County Transportation System Plan (TSP) for County staff, agency and community partners, and all members of the public.

This Transportation System Plan (TSP) update provides direct guidance on how to build, operate and maintain Washington County’s major roadway network, while addressing complementary elements of the larger transportation system— including transit, multi-use trails, state highways and freight railroads — maintained by other entities. It provides a framework for future transportation decisions, and makes strides toward county and regional transportation aspirations, goals and targets.

The TSP Users' Guide will be an evolving resource guide. As future updates are adopted, this guide will reflect the adopted changes by the dates they become effective including an updated cover page and document page footers. Refer to the adopted ordinances if in need of clarification about any information contained with the TSP Reference Guide.


TSP Commonly-Used Maps

Each map contains a link to an interactive online map that users can zoom and scroll through. To see adopted versions of these maps, refer to Ordinances 783 and 793. 


TSP Planning Project Webpage (archived)

View the archived Washington County Transportation System Plan project webpage