Oklahoma State Highway 66 Oklahoma State Highway 66 State Highway 66 (abbreviated SH-66) is a state highway in the U.S. state of Oklahoma, beginning at U.S. Highway 81 in El Reno and ending at U.S. Highway 60 near White Oak. The highway was designated in 1985 as a replacement for the decommissioned US-66. Although most of the highway follows Historic Route 66, the highway follows US-66's final alignment, joining Interstate 44 through Tulsa and Oklahoma City, while older versions of the route follow various city streets through both cities. The highway has retained its importance for most of its length due to its paralleling
Oklahoma State Highway 5 of the H.E. Bailey Turnpike). Five miles (8 km) east of where this three-route concurrency breaks up, SH-5 turns south in Walters, with the mainline being taken over by State Highway 53. SH-5 heads east again toward Temple, where it has a brief concurrency with State Highway 65, and then turns southeast to pass through Hastings before ending at US-70 in Waurika. SH-5 has three lettered spur routes. Oklahoma State Highway 5 State Highway 5 (SH-5 or OK-5) is the name assigned to two distinct state highways in the U.S state of Oklahoma. One runs for through extreme southwestern Oklahoma,