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 83 Oklahoma State Highway 83 Oklahoma State Highway 83 (abbreviated SH-83) is a state highway in the U.S. state of Oklahoma. The route, which lies entirely within Le Flore County, connects US-59 between Howe and Poteau to the Arkansas state line. Along the way, SH-83 serves the town of Monroe. Its total length is . The highway has no lettered spur routes. SH-83 begins at US-59 north of Howe. The route heads due east of this point, continuing until it reaches an abandoned rail line, where it curves north. SH-83 follows the rail line as the highway turns back east, paralleling