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 11 Oklahoma State Highway 11 State Highway 11 (abbreviated SH-11) is a state highway in Oklahoma. It runs in an irregular west-to-east path across the northern part of the state, from U.S. Highway 281 (US-281) north of Alva to Interstate 244 (I-244) / US-412 in Tulsa. There is one letter-suffixed spur highway branching from SH-11, SH-11A. From its beginning at US-281, SH-11 travels east through the town of Capron. later, it reaches SH-8. SH-11 and SH-8 overlap for , passing through the town of Burlington along the way. SH-8 / SH-11 meet SH-58 three miles (5 km) east of Burlington, and