State Route 397 (SR 397) is a state highway in the U.S. state of Washington, serving the Tri-Cities region. It primarily functions as a truck route through industrial areas in Finley, Kennewick, and Pasco, running 22 miles (35 km) between junctions with Interstate 82 (I-82) and I-182. The highway crosses the Columbia River on the Cable Bridge, built in 1978 to replace an earlier bridge.