Traffic Impact Fee

Notice: This page refers to a project or program that is no longer active. As of 12/12/2012, this page is no longer actively maintained by Washington County. It is retained for historical reference only.

The Traffic Impact Fee (TIF) was replaced by the Transportation Development Tax (TDT) effective, July 1, 2009. In certain instances the TIF continues to apply to non-residential development with prior land use approval. This web page is maintained for historical purposes.

The Traffic Impact Fee (TIF) was one of three major sources of transportation funding in Washington County. Established to fund projects to help keep pace with the county’s growth and future needs, the Traffic Impact Fee was paid by new development based on its projected impact on the existing transportation system. 

Please note that TIF has been updated by the Transportation Development Tax (TDT). Please click here for more information.


How did TIF work?

Developing properties were required to pay a TIF based on the number of trips they were projected to generate. The basis for TIF collections is the Institute of Transportation Engineers (ITE) Manual, which is recognized and used nationwide by transportation and engineering agencies and organizations to meet society's needs for safe and efficient transportation. The TIF was set up to be reasonable and affordable so as not to prohibit future development from occurring within the county.


How much money did TIF generate?

TIF revenues varied from year to year depending on the level and type of development. On average, for the last decade (1999-2009), developers have paid approximately $15 million per year in TIF and/or TIF credits. That money was allocated toward adding capacity (travel lanes, turn lanes, and signalized intersections) to major roads to help handle more traffic near the new developments.


What TIF projects have been completed?

Adopted countywide by public vote in 1990, TIF generated more than $267 million for system improvements (over $176 million in fee revenue, plus over another $27 million in interest and investment revenue as well as over $63 million in credits). This has helped build more than 200 capital projects, including providing local matching funds for Westside Light Rail and the Commuter Rail, and paying for design and construction of projects such as Forest Grove's Highway 47 Bypass, the Nyberg bridge widening over I-5, and the Cedar Hills Boulevard Extension.


How were TIF projects selected?

TIF was often used in conjunction with funding from other sources to provide improvements that increase roadway system capacity. Each local jurisdiction sets priorities for the use of TIF funds it collects independently, although these are coordinated and approved through the Washington County Coordinating Committee.