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 Board. Two inmates post-"Furman" had their death sentences commuted. In earlier years Governor Lee Cruce commuted every death sentence imposed during his administration (1911–1915). Nitrogen gas inhalation option was added by the Oklahoma Legislature in 2015 and has never been used in a judicial execution, though it is routinely used to give a painless death in animal euthanasia. On December 16, 2010, Oklahoma became the first American state to use pentobarbital, in the execution of John David Duty. In 2014, Oklahoma placed scheduled executions on hold until the state's Department of Corrections implemented eleven proposed improvements in protocols governing capital