Interstate 235 (Oklahoma)
I-235 highlighted in red
|Auxiliary route of I-35|
|Maintained by ODOT|
|Length||5.36 mi (8.63 km)|
|South end||I-35 / I-40 / US-62 / US-77 / US-270 in Oklahoma City|
|North end||I-44 / US-77 / SH-66 in Oklahoma City|
Interstate 235 (I-235) in Oklahoma is also known as the Centennial Expressway or the I-235 Central Expressway. The spur route of Interstate 35 is a 5.4-mile-long north–south alignment in central and north-central Oklahoma City. It connects northbound to U.S. Highway 77 to suburban Edmond and southbound at Interstate 44 on to Interstate 35 and the I-40 Crosstown Expressway near downtown Oklahoma City. U.S. Highway 77 is concurrent with I-235 for the entire route. South of its junction with I-40, I-235 becomes Interstate 35.
I-235's route forms the eastern edge of Automobile Alley, the Deep Deuce residential neighborhood, and the Bricktown Entertainment District, all of which are in the eastern section of downtown Oklahoma City.
The I-235 designation was approved by the American Association of State Highway and Transportation Officials (AASHTO) on July 13, 1976. Only 3.66 miles (5.89 km) were complete in 1978. It finally opened in 1989.
Interstate 235 in Oklahoma officially finished a major reconstruction in September 2008, which changed the section of I-235 between N.W. 50th Street, on the north end, and N.W. 23rd, on the south end. It added a third lane and an exit lane, changing the two-lane stretch into four lanes.
|0.00||0.00||I-35 south (US-62 west / US-77 south) – Dallas||Southern terminus; southern end of US-77 concurrency; I-35 exit 126, I-40 exit 151B|
|125C||Oklahoma City Boulevard||Exit number based on I-35 mileposts; northbound left exit only|
|1A||I-35 north / I-40 / US-62 east (US-270 east) – Wichita, Ft. Smith||Southbound left exit and northbound entrance|
|1B||I-40 west (US-270 west) – Amarillo|
|0.43||0.69||1C||Sheridan Avenue – Downtown||Northbound exit only|
|Oklahoma City Boulevard||Southbound exit only|
|0.65||1.05||1D||Lincoln Boulevard – Oklahoma Health Center, State Capitol||Northbound exit and southbound entrance|
|1.13||1.82||1E||Harrison Avenue / N. 10th Street||No southbound exit|
|1F||N. 6th Street / Walnut Avenue||No northbound exit|
|1.40||2.25||1G||N. 10th Street – Oklahoma Health Center||Southbound exit and northbound entrance|
|2.32||3.73||2A||N. 23rd Street / Santa Fe Avenue||Northbound exit and southbound entrance|
|2.64||4.25||2B||N. 23rd Street / Broadway Avenue – State Capitol||Southbound exit and northbound entrance|
|3.53||5.68||3||N. 36th Street|
|4.53||7.29||4A||NW 50th Street||Southbound entrance only; northbound exit and entrance closed, to be merged into I-44 exit (under construction)|
|5.05||8.13||—||I-44 (SH-66) / US-77 north (Broadway Extension)||Northern terminus; northern end of US-77 concurrency; I-44 west exit 127, east exits 127A-B; freeway continues as US-77 north (Broadway Extn.)|
|1.000 mi = 1.609 km; 1.000 km = 0.621 mi|
- "I-235". Interstate Guide. Retrieved 5 October 2014.
- "Route Log - Auxiliary Routes of the Eisenhower National System Of Interstate and Defense Highways - Table 2". Federal Highway Administration. Retrieved 5 October 2014.
- Google (2010-07-09). "Interstate 235 (Oklahoma)" (Map). Google Maps. Google. Retrieved 2010-07-09.
- Google (2008-06-07). "Interstate 235 (Oklahoma)" (Map). Google Maps. Google. Retrieved 2008-06-07.
- Stuve, Eric (2004-02-14). "OKHighways.com -- Interstate 235". Retrieved 2010-07-09.
- Rhodes, H. J. (July 15, 1976). "Letter to V. O. Bradley, Director of the Oklahoma State Highway Department" (PDF). American Association of State Highway and Transportation Officials. p. 8. Retrieved May 24, 2013.
- Interstate System Route Log and Finder List, FHWA, March 1978
- Oglesby, Scott. 3-digit Interstates from I-35. Kurumi. URL accessed 29 January 2005.
- "I-235/US-77 and I-44 (OFF Broadway 44)". Oklahoma Department of Transportation. The State of Oklahoma. April 8, 2018. Retrieved April 11, 2018.
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