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 37 Oklahoma State Highway 37 State Highway 37 (abbreviated SH-37) is a designation for two separate highways in the state of Oklahoma. The northern section runs between Hinton and Moore in central Oklahoma, while the southern section runs from the Texas state line at the Red River to Idabel, in southeastern Oklahoma. The northern section of SH-37 runs from US-281 in Hinton to Sunnylane Road (former SH-77H) in Moore. The southern section of SH-37 is long. The SH-37 in Central Oklahoma begins at US-281 in Hinton, Caddo County. It runs in a zigzag pattern for to the southeast before crossing into