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 5 Oklahoma State Highway 5 State Highway 5 (SH-5 or OK-5) is the name assigned to two distinct state highways in the U.S state of Oklahoma. One runs for through extreme southwestern Oklahoma, passing through Harmon and Jackson Counties. The other is long and runs through southwest Oklahoma, connecting US-283 south of Altus to US-70 at Waurika. The western SH-5 begins at U.S. Highway 62 in Gould, Oklahoma and runs south until just past Lincoln, where it turns east. It then ends at State Highway 6 in Eldorado, just seven miles (11 km) north of the Texas border. The western SH-5