State Route 193 (SR 193) is a 2.58-mile (4.15 km) long state highway that serves the Port of Wilma in Whitman County, located in the U.S. state of Washington. The highway parallels the Snake River from an intersection with SR 128 north of Clarkston to the Port of Wilma. The current road is a short segment of the former route that extended from U.S.