Interstate 240 (Oklahoma)
| I-240 highlighted in red | ||||
| Route information | ||||
| Auxiliary route of I-40 | ||||
| Maintained by ODOT | ||||
| Length | 26.8 mi (43.1 km) | |||
| Existed | 1965–present | |||
| NHS | Entire route | |||
| Major junctions | ||||
| West end | I-344 / Kilpatrick Turnpike / SH-152 in Oklahoma City | |||
| East end | I-40 / US 270 / SH-3 in Oklahoma City | |||
| Location | ||||
| Country | United States | |||
| State | Oklahoma | |||
| Counties | Oklahoma | |||
| Highway system | ||||
| 
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Interstate 240 (I-240) is an Interstate Highway in southern Oklahoma City, Oklahoma, United States, that runs 26.8 miles (43.1 km) from I-344 (John Kilpatrick Turnpike)/SH-152 to I-40. The Interstate overlaps State Highway 3 (SH-3), the longest Oklahoma state highway, for most of its length and functions as a southern bypass around the Downtown area and is the spur of I-40.
Major destinations along the route include Tinker Air Force Base and the heavily populated southside of Oklahoma City. With just under eight million square feet (0.74×106 m2) of commercial space, I-240 is a major corridor of retail, industrial, and office space. As of 2012, however, the corridor included some "pockets of shuttered stores and creeping shabbiness" and local planners were in the first stages of efforts to revitalize the corridor.