The road has 2 undivided lanes as it travels west through mostly rural areas and becomes Front Street in Saint John.

After entering Lincoln County, the highway crosses over Union Pacific and BNSF rail lines,[4] then passes through Sprague.

The highway serves as exit 245 on Interstate 90 (I-90) and US 395 in a diamond interchange,[5] and is the busiest point on the route with an annual average daily traffic of 1,300 vehicles in 2011.

The road crosses a BNSF rail line and turns north,[4] becoming 3rd Street until the route ends at SR 28.

[11][12] SSH 11C was shortened in 1943 to a Ewan–Sprague route and the former section to Steptoe became part of an extension of Primary State Highway 18 (PSH 18).