Page 115 - TransportationPlanUsetsGuide

Count locations in Washington County with the highest truck volumes include:

• Tualatin-Sherwood Rd, west of Boones Ferry (5,948 trucks in 2007, and 4,085 trucks in 2012)5,
• Cornelius Pass Rd, north of Cornell (2,172 trucks in 2007, 2,359 trucks in 2012),
• Glencoe Rd, south of Beach (1,916 trucks in 2007, and 1,647 trucks in 2012),

• Murray Blvd, south of Allen (1,882 trucks in 2007, and 1,657 trucks in 2012),
• 185th Ave, north of Cornell (1,725 trucks in 2007, and 1,730 trucks in 2012),
• Roy Rogers Rd, south of Scholls Ferry (1,723 trucks in 2007, and 1,587 trucks in 2012), and

• Scholls Ferry Rd, west of Nimbus (1,718 trucks in 2007, and 1,742 trucks in 2012).

Count locations in Washington County with the highest percentages of truck volumes include:
• Clark Hill Rd, south of Farmington (24 percent in 2007, and 14 percent in 2012),

• Grahams Ferry Rd, south of Cahalin St (22 percent in 2007, and 20 percent in 2012),
• Roy Rd, north of Cornelius-Schefflin (22 percent in 2007, and 27 percent in 2012),
• Cipole Rd, north of Tualatin-Sherwood (19 percent in 2007, and 17 percent in 2012),

• Tonquin Rd, south of Oregon St (18 percent in 2007, and 12 percent in 2012),
• Sellers Rd, south of Hwy. 26 (17 percent in 2007, and 15 percent in 2012),
• Gordon Rd, south of Beach (11 percent in 2007, and 15 percent in 2012),

• Farmington Rd, west of 209th (17 percent in 2007, and 14 percent in 2012), and
• Tualatin-Sherwood Rd, west of Boones Ferry (16 percent in 2007, and 14 percent in 2012).

The Washington County traffic count stations do not include ODOT or city-operated roadways. ODOT has a limited
number of Automatic Traffic Recorder (ATR) count stations that count trucks on their roads in Washington County. Truck
volumes and truck percentages of total traffic were compared for 2008 and 2010 (latest comparable data available) for
the five ODOT ATR stations listed below:
• OR 6 west of Glenwood Lane (549 trucks or 12 percent trucks in 2008, 1,070 trucks or 22.6 percent
trucks in 2010),
• U.S. 26 @ Hwy. 47 (302 trucks or 4.7 percent trucks in 2008, 583 trucks or 8.39percent trucks in 2010),
• U.S. 26 west of Glencoe Rd. (2,218 trucks or 10.6 percent trucks in 2008, 2,129 trucks or 10.13 percent
trucks in 2010),
• I-5 south of Boones Ferry Rd. (20,632 trucks or 13.6 percent trucks in 2008, 15,596 trucks or 10 percent
trucks in 2010), and
• OR 8 west of NW 334th Ave. (1,482 trucks or 4.38 percent trucks in 2008, 1,349 trucks or 4.06 percent
trucks in 2010).

As indicated by the data, there are no clear trends. Two of the five count stations exhibited increased truck volumes
and percentages, whereas the other three locations showed decreased truck volumes and percentages. Although this
is a very limited sample size that should be viewed with caution, this data reflects an overall decrease of approximately
4,500 trucks, or just under 18 percent in truck traffic between 2008 and 2010. One possible explanation for this down-
ward trend is that the 2008 to 2010 time period coincides with the height of the economic recession. Reduced busi-
ness activity and an expected commensurate decline in truck activity may have occurred during this period.

5 All of Tualatin-Sherwood has extremely high truck volumes, a listing of the highest truck volumes in Washington County would be a description of
the count station locations along Tualatin-Sherwood Rd. It is listed once with the highest truck volume location.

PART 3: TRANSPORTATION MODAL ELEMENTS 99
Effective November 27, 2015 • Updated December, 15 2016