Oklahoma State Highway 4 Oklahoma State Highway 4 State Highway 4, abbreviated as SH-4 or OK-4, is a designation for two distinct highways maintained by the U.S. state of Oklahoma. One of them serves as an important route through the suburbs west of Oklahoma City, while the other connects US-259 to the Arkansas state line west of Cove, Arkansas. SH-4 has no lettered spur routes. The two SH-4s were never connected. The Central Oklahoma highway was established in 1941 and gradually extended to its present extent between then and 2003. The Eastern Oklahoma highway was originally numbered SH-21, and was renumbered to SH-4 in
Oklahoma State Highway 132 (1.6 km) to the west of unincorporated Hawley. Its final highway junction in Oklahoma is with State Highway 11. From here, the highway continues due north, passing west of Sand Creek, Wakita, and Gibbon en route to Manchester. After passing through Manchester, the highway turns west along the Oklahoma–Kansas state line. The road then curves back to the north, fully entering the state of Kansas, and becomes K-179. SH-132 was first designated on July 14, 1956. Initially, the highway began at what was then SH-38 (present-day SH-45) in Carrier, proceeding north along its present-day route to end at US-64 east