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 Capitol of their operations to the Oklahoma Judicial Center in 2011, leaving only the Supreme Court Hearing Chamber in the capitol building. The state capitol complex is the only state capitol grounds in the United States with active oil rigs. Oklahoma's territorial capital and first state capital was located in the city of Guthrie. The settlement of the first state capital began at noon on April 22, 1889, when cannons sounded the start of the Oklahoma land run. The town was designated as the territorial capital in 1890. State government officials let voters decide on whether or not to move the