Interstate 235 (Oklahoma)

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Interstate 235 marker

Interstate 235
Centennial Expressway
Route information
Maintained by ODOT
Length: 5.36 mi[2] (8.63 km)
Existed: 1989[1] – present
Major junctions
South end: I-35 / I-40 / US-62 / US-77 / US-270 in Oklahoma City[3]
North end: I-44 / US-77 / SH-66 in Oklahoma City[4]
Highway system
Oklahoma State Highway System
SH-209 I-240

Interstate 235 (abbreviated 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.[5] South of its junction with I-40, I-235 becomes Interstate 35.

Route description[edit]

I-235 in Oklahoma City, concurrent with US 77

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.[6] Only 3.66 miles (5.89 km) were complete in 1978.[7] It finally opened in 1989.[8]

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.

Exit list[edit]

The entire route is in Oklahoma City, Oklahoma County.

mi km Exit Destinations Notes
I-35 / US-77 / US-62 continues south toward Dallas,Texas and South Suburbs
1A I-35 north / I-40 east / US-62 east (US-270 east) – Wichita, Fort Smith Southbound exit and northbound entrance; I-35/40 exit 151C
1B I-40 west (US-270 west) — Amarillo Southbound exit and northbound entrance; I-35 exit 126
1C Oklahoma City Boulevard - Downtown Southbound exit only; Exit 1C for Southbound I-235
1C Sheridan Avenue west – Downtown Northbound exit and southbound entrance; Exit 1C for Northbound I-235
1D Lincoln Boulevard – Oklahoma Health Center, State Capitol Northbound exit and southbound entrance
1E Harrison Avenue – Downtown Northbound exit and southbound entrance
1F N. 6th Street west – Downtown Southbound exit and northbound entrance
1G N. 10th Street – Oklahoma Health Center Southbound exit and northbound entrance
2A N. 23rd Street, N. Santa Fe Avenue Northbound exit and southbound entrance
2B N. 23rd Street, Broadway Avenue – State Capitol Southbound exit and northbound entrance
3 N. 36th Street
Santa Fe Avenue, N. 50th Street No exit from southbound I-235
I-44 (SH-66) I-44 west exit 127, east exits 127A-B
US-77 north (Broadway Extension) Northbound continuation of mainline I-235, northern terminus of US-77 concurrency
US-77 continues north toward Edmond, Oklahoma and North Suburbs
1.000 mi = 1.609 km; 1.000 km = 0.621 mi


  1. ^ "I-235". Interstate Guide. Retrieved 5 October 2014. 
  2. ^ "Route Log - Auxiliary Routes of the Eisenhower National System Of Interstate and Defense Highways - Table 2". Federal Highway Administration. Retrieved 5 October 2014. 
  3. ^ Google (2010-07-09). "Interstate 235 (Oklahoma)" (Map). Google Maps. Google. Retrieved 2010-07-09. 
  4. ^ Google (2008-06-07). "Interstate 235 (Oklahoma)" (Map). Google Maps. Google. Retrieved 2008-06-07. 
  5. ^ Stuve, Eric (2004-02-14). " -- Interstate 235". Retrieved 2010-07-09. 
  6. ^ 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. 
  7. ^ Interstate System Route Log and Finder List, FHWA, March 1978
  8. ^ Oglesby, Scott. 3-digit Interstates from I-35. Kurumi. URL accessed 29 January 2005.

External links[edit]

Route map: Google

KML is from Wikidata