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Figure 3-4: ODOT VMT Estimates for Washington County: 1991–2011 (ODOT Roads Only)

Figure 3-5: Washington County Fuel Sales: 2006–2011

Source: ODOT Fuels Tax Group Reports, PSU Population Center
VMT within Washington County includes travel by residents from outside the County, but does not include travel by
Washington County residents outside the County. Total weekday VMT within Washington County is estimated to be 8.4
million miles of travel in 2010, which translates to approximately 15.76 miles/day/person based on the population of
Washington County in 2010. The Metro regional travel demand forecast was used to estimate the 2010 VMT and the
2
forecast for 2035 VMT based on the “State” transportation system. VMT within Washington County is expected to in-
crease to 11.9 million miles per day. This translates to approximately 15.71 miles/day/person based on the population
increase projected for Washington County; which is a slight decrease from the 2010 VMT. (Note this does not include
weekend or holiday travel.)

2 The VMT estimates produced through the regional travel model may not be accurate; however, they are presented here for reference.

PART 3: TRANSPORTATION MODAL ELEMENTS 35
Effective November 27, 2015 • Updated December, 15 2016