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 128 Oklahoma State Highway 128 State Highway 128 (abbreviated SH-128) is a state highway in Le Flore County, Oklahoma. It connects U.S. Highway 59 in Heavener to the Arkansas state line, where it becomes Arkansas Highway 28. It has no lettered spur routes. SH-128 was first added to the state highway system circa 1956. It has been realigned once, to better match up with roads across the Arkansas line. State Highway 128 begins at US-59/US-270 in Heavener. From the terminus south of downtown, the highway follows West Avenue I to East 1st Street, where it turns south, running parallel to US-59/US-270.