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 112 as gravel through Cameron, ending at US-271/SH-9 in what is now Pocola (the town is not shown on contemporary maps). On October 5, 1959, the highway was straightened between Cameron and US-271. By this time, the highway was entirely paved. Further straightening between Cameron and Rock Island occurred on June 1, 1970. The most major change in SH-112's history came on February 5, 1973, when the highway was extended to Arkoma. One further straightening occurred in the Cameron vicinity on June 27, 1982. No further changes have occurred since then. Oklahoma State Highway 112 State Highway 112 is a 24.6