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 162 passed through Taft along what is now Old Taft Road en route to the county seat of Muskogee. On July 10, 1967, however, the state shifted the routes onto the present-day expressway south of town. SH-162 was created around the same time, allowing Taft to remain connected to the state highway system. The change to US-62/64/SH-16's alignment was not reflected on the official state highway map until the 1969 edition; this was also the first edition of the state highway map to show SH-162. Oklahoma State Highway 162 State Highway 162 (SH-162/OK-162) is a 1.3-mile (2.1 km) state highway in