Washington State Route 128
State Route 128 (SR 128) is a Washington state highway located in Asotin and Whitman counties, west of the Idaho state line. The long route runs north from (US 12) in Clarkston to cross the Snake River and turn east after intersecting to terminate at (SH 128) on the Idaho state line. The highway was originally created in 1964 on a Pomeroy–Clarkston route, replacing (SSH 3K), which had been established in 1937; in 1991, the route was changed to its present form. Route description. State Route 128 (SR 128) begins at an intersection with  (US 12) 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 (SH-128); 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 (AADT) data collected by  the Washington State Department of Transportation. History. The first highway that would later become SR 128 was Secondary State Highway 3K (SSH 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 (PSH 3), co-signed with (US 410) 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, the state legislature approved an extension of SR 128 across the  Red Wolf Crossing (replacing a section of SR 193) and east to the Idaho state line. The extension was in response to the state of Idaho designating Idaho State Highway 128 on the other side of the border. A year later, SR 128 was truncated from Pomeroy to Clarkston along its current route, a loss of in total. The transfer was estimated to cost the county government $250,000 for maintenance, due in part to of new pavement required near Peola.