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 38 originally given to an alignment from SH-58 in Carrier south to US-60 and SH-15 (now US-412). The majority of this route had been reassigned to SH-45, with the remainder being added to SH-132, by 1963. The road that is now SH-38 was added to the state highway system in late 1961 to early 1962 as SH-35. When the SH-38 designation was freed up in 1962, SH-35 was renumbered to SH-38. No further changes to the route have occurred since then. Oklahoma State Highway 38 State Highway 38 (abbreviated SH-38) is a state highway in the U.S. state of Oklahoma. It