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 87 the early 1960s, SH-87's length was at its zenith, as the highway stretched from Idabel to the Arkansas state line. However, on 1963-01-07, US-259 was established. The section of SH-87 from Idabel through Harris was turned over to the new U.S. route, setting the western terminus of the highway to its present-day location. Oklahoma State Highway 87 State Highway 87 is a highway in southeastern Oklahoma, running for . It passes through the extreme southeastern corner of the state, running entirely through McCurtain Co.. It has no lettered spur routes. SH-87 begins at an intersection with US-259 near the unincorporated