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Updating Washington County’s Transportation System Plan
The TSP update process began in 2012. In order to address the broad range of transportation issues involved in the
update, and to allow adequate time for review and input by the public and governing bodies, the County developed the
TSP in two phases, as illustrated in Figure 1-1.

Figure 1-1: TSP Update Planning Process

Phase I of the update included a review of existing conditions, analysis of forecasts of anticipated growth and future
travel, and identification of existing and future transportation system needs. Phase I also included a reorganization of
the County’s transportation system policies. Policies from the Transportation System Plan were modified and reorga-
nized into transportation system goals, objectives, and strategies.

Phase II included an analysis of future transportation needs using transportation system performance measures specif-
ically developed for the TSP update. The transportation system maps were updated in Phase II, including maps for func-
tional classification of County roads, the number of lanes planned for individual roads, right-of-way preservation needs,
and special area street overlays. Modal elements were completed in Phase II for roadways, freight, active transportation
(bicycling, walking and transit), and transportation system management. In addition, Phase II included the development
of implementation strategies -- coordination with other agencies and community groups, funding, maintenance of the
transportation system, and identification of candidate transportation system improvements.

Public Involvement
Public involvement played an important role throughout the TSP update process. The project team coordinated with two
advisory committees appointed by the Board of Commissioners for the duration of the planning process. The Com-
munity Advisory Committee (CAC) was an 18member group consisting of neighborhood, business, and advocacy group
representatives. The Interagency Coordinating Committee (ICC) was a technical committee consisting of representatives
from the cities in Washington County, Tualatin Hills Park & Recreation District (THPRD), Tualatin Valley Fire & Rescue
(TVF&R), TriMet, Metro, Port of Portland, and ODOT. All committees provided input and advice during the development
of the TSP, and considered the implications of County transportation policies on their respective jurisdictions and con-
stituencies. Regular meetings were held with both committees over the course of the TSP update to solicit input, review
interim work products, and develop policy and technical direction for the TSP. Other official bodies and entities involved
in decision making for the TSP Update are described below; the committee structure and decision-making process is
illustrated in Figure 1-2.

4 PART 1: BACKGROUND
Effective November 27, 2015 • Updated December, 15 2016