 The state legislature added SR-48 to the state highway system in 1927, connecting Bingham with SR-1 (US-91, now US-89) at Midvale Junction.In order to serve the planned I-15 interchange at 7200 South, SR-48 was moved in 1965 to turn north off Center Street onto Holden and Main Streets in Midvale and then east on 7200 South to US-89.As the city of Bingham de-annexed land, a short extension was made at the west end to the new city limits in 1968, but this and more was abandoned in 1973 to allow the Kennecott Copper Corporation to relocate its guard station.