Interstate 35 in Oklahoma
| I-35 highlighted in red | ||||
| Route information | ||||
| Maintained by ODOT | ||||
| Length | 235.96 mi (379.74 km) | |||
| NHS | Entire route | |||
| Major junctions | ||||
| South end | I-35 / US 77 at the Texas state line | |||
| 
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| North end | I-35 / Kansas Turnpike at the Kansas state line | |||
| Location | ||||
| Country | United States | |||
| State | Oklahoma | |||
| Counties | Love, Carter, Murray, Garvin, McClain, Cleveland, Oklahoma, Logan, Payne, Noble, Kay | |||
| Highway system | ||||
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Interstate 35 (I-35), in the US State of Oklahoma, runs from the Red River at the Texas border to the Kansas state line near Braman for a length of 236 miles (380 km). I-35 has one auxiliary route in the state, I-235, in the inner city of Oklahoma City. A second auxiliary route, I-335, is the designation for the Kickapoo Turnpike, although it will not meet I-35 until the southern extension of the turnpike to a junction with I-35 in Purcell is built. Excluding the Panhandle, I-35 forms the informal bisector for central Oklahoma, and along with US 81/US 283 in western Oklahoma and US 69/US 75 in the eastern portion, it provides one of the main north-south corridors through the state.