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 95 US-64, so SH-95 was truncated back to the US-64 junction. This change was reverted in 1961, and US-56 and SH-95 ran concurrent north of US-64. The following year, US-56 was rerouted over SH-114, leaving SH-95 on its own once again. Before 2003, SH-95 extended beyond US-56 to the Kansas state line, connecting to K-27. After KDOT realigned K-27 to run east of Elkhart, ODOT truncated SH-95 to US-56. Oklahoma State Highway 95 State Highway 95 (abbreviated SH-95) is a state highway in the Panhandle region of the U.S. state of Oklahoma. This route, which is long, runs entirely through western