The highway travels southeast over a BNSF rail line south of Amtrak Station before leaving Ephrata and passing Ephrata Municipal Airport.

[5] Every year, the Washington State Department of Transportation (WSDOT) conducts a series of surveys on its highways in the state to measure traffic volume.

This is expressed in terms of annual average daily traffic (AADT), which is a measure of traffic volume for any average day of the year.

In 2011, WSDOT calculated that between 6,400 and 8,000 vehicles per day used the highway as a shortcut between Ephrata and Moses Lake.

The highway was repaved in fall 2009 as part of the American Recovery and Reinvestment Act.