Interstate 235 (Oklahoma)

Interstate 235
Centennial Expressway
I-235 highlighted in red
Route information
Auxiliary route of I-35
Maintained by ODOT
Length	5.36 mi[1] (8.63 km)
Existed	1989[2]–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]
Location
Counties	Oklahoma
Highway system
Interstate Highway System Main Auxiliary Suffixed Business Future Oklahoma State Highway System Interstate US State Turnpikes ← SH-209 → I-240

Interstate 235 (I-235) in Oklahoma is also known as the Centennial Expressway or the I-235 Central Expressway. The spur route of I-35 is a 5.4-mile-long (8.7 km) north–south alignment in central and north-central Oklahoma City. It connects northbound to U.S. Highway 77 (US-77) to suburban Edmond and southbound at I-44 on to I-35 and the I-40 Crosstown Expressway near downtown Oklahoma City. US-77 is concurrent with I-235 for the entire route.^[5] South of its junction with I-40, I-235 becomes I-35.

Route description[]

I-235 in Oklahoma City, concurrent with US-77

The northern end of I-235 at its interchange with I-44; the freeway however continues north into Edmond, Oklahoma, as US-77, also known as the Broadway Extension

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.

History[]

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]

I-235 in Oklahoma officially finished a major reconstruction in September 2008, which changed the section of I-235 between Northwest 50th Street, on the north end, and Northwest 23rd Street, on the south end. It added a third lane and an exit lane in each direction, changing the four-lane stretch into eight lanes.

Exit list[]

The entire route is in Oklahoma City, Oklahoma County.

mi	km	Exit	Destinations	Notes
0.00	0.00		I-35 / US 77 south / US 62 west – 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; access to Downtown Oklahoma City
		1A	I-35 north / I-40 / US 62 east / US 270 east – Wichita, Ft. Smith	Southbound left exit and northbound entrance
		1B	I-40 / 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; access to Oklahoma City National Memorial
		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)[9]
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       Concurrency terminus       Incomplete access

References[]

External links[]

Wikimedia Commons has media related to Interstate 235 (Oklahoma).

• I-235 at OKHighways.com

Route map: