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 137 to the route since. Oklahoma State Highway 137 State Highway 137 (SH-137) is a highway in Ottawa County, Oklahoma. It is a two-lane highway beginning at State Highway 10 east of Miami and ends at U.S. Highway 60 in Twin Bridges State Park on the north side of the Grand Lake o' the Cherokees. It has no lettered spur routes. SH-137 was established circa 1957. The highway's northern terminus was formerly US-69 Alternate in Quapaw, but the portion of highway from SH-10 to US-69 Alternate has since been removed from the state highway system. SH-137 begins at an intersection with