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 14 Oklahoma State Highway 14 State Highway 14, abbreviated as SH-14, is a highway maintained by the U.S. state of Oklahoma. It is long, with its entire route falling in Woods County in the northwestern part of the state. It does not have any lettered spur routes. SH-14 was part of Oklahoma's original highway system, as designated on August 24, 1924, and ran from Frederick in southwestern Oklahoma to the Kansas state line. In the late 1930s, however, new U.S. routes were introduced to Oklahoma; U.S. Highway 281 (US-281) and US-183 overtook most of SH-14's route, reducing it to its present-day