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
Capital punishment in Oklahoma on death row. Capital punishment in Oklahoma Capital punishment is a legal penalty in the U.S. state of Oklahoma. The state has executed the third largest number of convicts in the United States (after Texas and Virginia) since re-legalization following "Gregg v. Georgia " in 1976. Oklahoma also has the highest number of executions per capita in the country. Oklahoma was the first jurisdiction in the world to adopt lethal injection as method of execution. No executions have been performed in Oklahoma since January 2015. After a three-year moratorium on lethal injection in March 2018, Oklahoma lifted aforementioned moratorium. Oklahoma