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 28 Oklahoma State Highway 28 State Highway 28 (abbreviated SH-28) is a state highway in Oklahoma. It runs in an irregular west-to-east pattern through Nowata, Rogers, Mayes and Delaware counties. There is one letter-suffixed spur highway branching from SH-28, SH-28A. SH-28 begins at US-169 just south of Delaware. From there it travels east-to-south, passing the community of Childers, to a junction with US-60. Crossing US-60, SH-28 runs six miles (10 km) due south to New Alluwe, then eight miles (13 km) south and east to Chelsea, where it intersects SH-66. From Chelsea, it is six miles (10 km) straight south to