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 137 Oklahoma State Highway 137 State Highway 137 (SH-137) is a highway in Ottawa County, Oklahoma. It is a two-lane highway beginning at State Highway 10 east of Miami and ends at U.S. Highway 60 in Twin Bridges State Park on the north side of the Grand Lake o' the Cherokees. It has no lettered spur routes. SH-137 was established circa 1957. The highway's northern terminus was formerly US-69 Alternate in Quapaw, but the portion of highway from SH-10 to US-69 Alternate has since been removed from the state highway system. SH-137 begins at an intersection with US-60 in Twin Bridges