Traffic Impact Fee  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 engin