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 156 Oklahoma State Highway 156 State Highway 156, abbreviated SH-156, is a highway maintained by the U.S. state of Oklahoma. Spanning through the north-central part of the state, it connects the town of Marland, Oklahoma to US-60/US-77/US-177 in the north to US-77 in the west. It is the former alignment of US-77. Starting at US-77, the highway goes east for until reaching Marland, where it turns northward. later, after crossing from Noble County into Kay County, it ends at US-60/US-77/US-177 west of Ponca City. SH-156 is designated as the 101 Ranch Memorial Road. A historical marker to the ranch is located