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 136 Oklahoma State Highway 136 State Highway 136 (abbreviated SH-136) is a state highway in Oklahoma. It runs across Texas County in the Oklahoma Panhandle, from the adjoining state of Texas in the south to Kansas in the north. SH-136 does not have any letter-suffixed spur routes branching from it, however, it does have a truck route bypassing downtown Guymon. State Highway 136 was designated as such to match the number of the Texas state highway it connects to. SH-136 begins at the Texas state line about north of Gruver. It runs north to Guymon, where it joins US-64, US-412 and