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 14 Oklahoma State Highway 14 State Highway 14, abbreviated as SH-14, is a highway maintained by the U.S. state of Oklahoma. It is long, with its entire route falling in Woods County in the northwestern part of the state. It does not have any lettered spur routes. SH-14 was part of Oklahoma's original highway system, as designated on August 24, 1924, and ran from Frederick in southwestern Oklahoma to the Kansas state line. In the late 1930s, however, new U.S. routes were introduced to Oklahoma; U.S. Highway 281 (US-281) and US-183 overtook most of SH-14's route, reducing it to its present-day