Washington State Route 128


State Route 128 is a Washington state highway located in Asotin and Whitman counties, west of the Idaho state line. The long route runs north from in Clarkston to cross the Snake River and turn east after intersecting to terminate at on the Idaho state line. The highway was originally created in 1964 on a Pomeroy–Clarkston route, replacing , which had been established in 1937; in 1991, the route was changed to its present form.

Route description

State Route 128 begins at an intersection with in Clarkston, a city in Asotin County. The road then crosses the Snake River over the Red Wolf Crossing into Whitman County, where it crosses the Starbuck, WA–Spalding, ID route of the Great Northwest Railroad and intersects the eastern terminus of. At the SR 193 intersection, the highway turns east and continues to the Idaho state line, where it becomes ; which continues for another before ending at north of Lewiston, Idaho. SR 128 after the US 12 intersection was used by 5,000 motorists daily in 2007 based on average annual daily traffic data collected by the Washington State Department of Transportation.

History

The first highway that would later become SR 128 was Secondary State Highway 3K, which was first designated in 1937. The road ran from Pomeroy in Garfield County southeast to Peola and later northeast to Clarkston, terminating at , co-signed with at both termini. During the 1964 highway renumbering, SSH 3K became SR 128, which ran ; the current route of the highway was occupied by, which was from 1969 to 1970. In 1990, SR 193 was shortened from the Red Wolf Crossing to the Idaho state line, which SR 128 was extended over. A year after the extension to Idaho, SR 128 was shortened from Pomeroy to Clarkston along its current route, a loss of in total.

Major intersections