Oklahoma State Highway 270 1979, US-270 ran through Oklahoma City on surface streets. It left the city and ran through Choctaw concurrent with US-62. US-270 split away from US-62 in Harrah, and continued on to Shawnee on what is now SH-270. On March 5, 1979, US-270 was rerouted to run concurrent with Interstate 40 from south of Calumet in Canadian County through the Oklahoma City metro, exiting the Interstate onto a surface alignment in Shawnee. Presumably, SH-270 was commissioned the same date. The realignment of US-270, with SH-270 on the old alignment between Harrah and Shawnee, appears on the 1979 state map. SH-270 followed
Oklahoma State Highway 43 of the lake. At the southwest corner of the lake, SH-43 runs across the top of the lake's dam. Northeast of the dam, the highway intersects SH-2. This intersection is the highway's eastern terminus. Oklahoma State Highway 43 State Highway 43 (SH-43 or OK-43) is a state highway in Oklahoma, United States. It runs 65.3 miles west-to-east through Coal, Atoka, Pushmataha and Pittsburg counties. SH-43 begins at US-75/SH-3 in Coalgate, the seat of Coal County. It runs east from Coalgate for toward US-69. Before meeting US-69, it crosses into Atoka County and over Atoka Reservoir. Two boat ramps on the