 The riverfront route between Richland and Kennewick was part of a 19th-century wagon road and the Inland Empire Highway, a state road established in 1913.It was incorporated into US 410 in 1926 and was part of US 12 from 1967 to 1986.The highway through the Hanford Nuclear Reservation was established as a state highway in the 1950s and opened on July 14, 1965, to connect Richland to the Vernita Bridge on SR 24.