The highway travels east and turns southeast into Connell, traveling over a rail line owned by BNSF Railway and used on the Amtrak Empire Builder route between Pasco and Spokane.

[3][4] After intersecting U.S. Route 395 (US 395) in the busiest section of the entire route, a diamond interchange that received a daily average of 2,800 vehicles in 2011,[5][6] the roadway continues east through the Washtucna Coulee and passes south of Sulphur Lake before entering Kahlotus.

The road exits the city travelling east to Lake Kahlotus and Washtucna Lake, paralleling the Columbia Plateau Trail northeast to the beginning of a concurrency with SR 261.

[11] During the 1964 highway renumbering, SSH 11B became SR 260, being unpaved from newly created SR 17 to a short concurrency with U.S. Route 395 (US 395) [2][12][13] By 1981, the entire route was paved and the concurrency with US 395 was removed and replaced by an intersection with a bypass of Connell.

[16] The western section of the highway between SR 17 and Connell was considered for removal by a legislative committee in 1986.