List of Oklahoma numbered highways
Oklahoma has a large network of numbered highways maintained by the state. These roads fall into one of three categories: Interstate highways, U.S. highways, and state highways. Interstate highways and U.S. highways are continuous with surrounding states, while state highways are not (though Oklahoma and another state's department of transportation may coordinate numbering).
The majority of the numbered highways within Oklahoma are maintained by the Oklahoma Department of Transportation. The only exceptions are sections of Interstate 44 and U.S. Highway 412, which run along turnpikes maintained by the Oklahoma Turnpike Authority. (I-44 runs along the H.E. Bailey, Turner, and Will Rogers Turnpikes; US-412 is signed along the Cimarron and Cherokee Turnpikes.)
Individual counties may establish a numbering system to apply to roads that they maintain. These highways are not listed here.
Interstate highways 
U.S. highways 
The U.S. Highway system is a nationwide network of roadways that happens to have part of the network passing through Oklahoma. U.S. Highways are the second-highest category of road classifications in the Oklahoma road system. They are marked with a number contained inside a white shield in a black box. The number is generally even if the highway runs east–west, and generally odd if it runs north–south, though there many substantial deviations from this plan.
|Number||South or west terminus||North or east terminus||Length (mi)||(km)||Formed|
|US-54||Texas state line in Texhoma||Kansas state line northeast of Tyrone||56.07||90.23||1926|
|US-56||New Mexico state line southwest of Felt||Kansas state line south of Elkhart, KS||71.17||114.53||1956|
|US-59||Arkansas state line southeast of Page||Kansas state line north of Welch||216.47||348.37||1935|
|US-60||Texas state line east of Higgins, TX||Missouri state line south of Seneca, MO||352.39||567.10||1930|
|US-62||Texas state line west of Hollis||Arkansas state line east of Westville||402.49||647.73||1931|
|US-64||New Mexico state line southwest of Felt||Arkansas state line east of Moffett||591.24||951.48||1926|
|US-69||Texas state line south of Colbert||Kansas state line north of Picher||260.82||419.74||1935|
|US-70||Texas state line south of Davidson||Arkansas state line west of DeQueen, AR||289.81||466.39||1926|
|US-75||Texas state line south of Colbert||Kansas state line north of Copan||249.42||401.40||1926|
|US-75/SH-16 east of Beggs||I-244/US-75 in Tulsa||33.77||54.35|
|US-77||Texas state line south of Thackerville||Kansas state line north of Newkirk||267.21||430.03||1926|
|US-81||Texas state line south of Terral||Kansas state line north of Renfrow||229.28||368.99||1926|
|US-83||Texas state line south of Gray||Kansas state line north of Turpin||36.32||58.45||1930|
|US-169||US-64/Creek Turnpike/Memorial Drive in Tulsa||Kansas state line north of Lenapah||73.67||118.56||1935|
|US-177||Madill||Kansas state line north of Braman||229.25||368.94||1928|
|US-183||Texas state line south of Davidson||Kansas state line north of Buffalo||219.94||353.96||1938|
|US-259||Texas state line south of Harris||US-59 west of Page||98.33||158.25||1963|
|US-266||US-62/US-75 north of Henryetta||US-64/SH-2 in Warner||43.09||69.35|
|US-270||Kansas state line north of Turpin||Arkansas state line east of Page||476.86||767.43||1931|
|US-271||Texas state line south of Hugo||Arkansas state line northeast of Pocola||158.32||254.79||1926|
|US-277||Texas state line southwest of Randlett||I-44/US-62 in Newcastle||124.47||200.32||1930|
|US-281||Texas state line southwest of Randlett||Kansas state line north of Alva||255.57||411.30||1938|
|US-283||Texas state line south of Altus||Kansas state line northeast of Rosston||203.31||327.20||1931|
|US-377||Texas state line south of Madill||SH-66 in Stroud||139.91||225.16||1988|
|US-385||Texas state line south of Boise City||Colorado state line north of Boise City||35.98||57.90||1958|
|US-412||New Mexico state line west of Boise City||Arkansas state line north of Watts||504.11||811.29||1988|
State highways 
Oklahoma's state highways serve as the second-lowest tier on the Oklahoma road system. They are marked with a number contained inside an outline of the state, having been formerly marked inside a white circle in a black box until January 2006. The number is generally even if the highway runs north-south, and odd if it runs east-west (this is the opposite of the numbering for Interstate and US Highways), though exceptions abound.
SH-60, SH-62, SH-75, and SH-81 have not been issued for state highways so that they are not confused with US Highways and Interstates bearing the same number designation. SH-35 has been issued, but it is only for a short spur, far from I-35, SH-69 was once assigned but this designation has since been revoked. Other two-digit highways that have yet to be assigned include: SH-12, SH-13, SH-21, SH-41, SH-57, SH-61, SH-68, and SH-90. SH-40 was once issued, but was absorbed into U.S. Highway 177; see SH-40A. SH-41, which was an east-west route across west-central Oklahoma that began at the intersection of S.W. 29th and May Avenue in Oklahoma City and veered southwest to Mustang, Union City and Minco before continuing west through Binger, Eakly, Cordell and Sayre and then crossing the Texas border near Sweetwater, was redesignated as SH-152 over its entire length in 1955. Across the Texas Panhandle, the highway continues as TX-152 to Dumas, Texas.
Many Oklahoma state highways have short spur routes connecting them to towns which lay off of the main route. Many times, these bear the same number as the parent highway, with a letter suffix. Highways with these spurs are marked in the chart below with a ¹. Some state highway spurs and loops from US highways have designations that are drawn from the parent US Highway designation.
As higher-level roads replaced sections of some routes, those sections sometimes had their designation revoked. This led to some highways being fragmented, missing one or more sections in the middle of the road. There are also a few unrelated highways that are designated in completely different parts of the state with the same name.
See also 
- Most of the years here are from the Oklahoma Department of Transportation's State Highway Map Archive, and reflect the first year that the highway appears on the map (or was removed, in the case of former highways). Thus the route may have been created during the previous year. Also note that there are no maps available from 1946 or 1949, and that maps after 1996 were published only every two years, so a year of 1947, 1950, 1999, 2001, 2003, 2005, or 2007 may reflect a creation as much as two years earlier.
- Oklahoma Department of Transportation. "State Highway System: Log of U.S. Highway 54". Retrieved 2008-01-01.
- Oklahoma Department of Transportation. "State Highway System: Log of U.S. Highway 56". Retrieved 2008-01-01.
- Oklahoma Department of Transportation. "State Highway System: Log of U.S. Highway 59". Retrieved 2008-01-01.
- Oklahoma Department of Transportation. "State Highway System: Log of U.S. Highway 60". Retrieved 2008-01-01.
- Oklahoma Department of Transportation. "State Highway System: Log of U.S. Highway 62". Retrieved 2008-01-01.
- Oklahoma Department of Transportation. "State Highway System: Log of U.S. Highway 64". Retrieved 2008-01-01.
- Oklahoma Department of Transportation. "State Highway System: Log of U.S. Highway 69". Retrieved 2008-01-01.
- Oklahoma Department of Transportation. "State Highway System: Log of U.S. Highway 70". Retrieved 2008-01-01.
- Oklahoma Department of Transportation. "State Highway System: Log of U.S. Highway 266". Retrieved 2008-01-01.
- Oklahoma Department of Highways. Oklahoma's Highways 1957 (Map). http://www.odot.org/hqdiv/p-r-div/maps/state-maps/pdfs/1957.pdf.
- SH-130 was removed from the state highway system in 1965 but restored in 1979.
- Oklahoma Department of Highways. Oklahoma Road Map (Map) (1959 ed.). http://www.odot.org/hqdiv/p-r-div/maps/state-maps/pdfs/1959.pdf. Retrieved 2007-11-01.
- Oklahoma Department of Transportation, Planning & Research Division. "Memorial Dedication & Revision History — SH 156". Retrieved 2007-05-07.
- State highway map from the Oklahoma Department of Transportation (~2 MB)
- Oklahoma Digital Maps: Digital Collections of Oklahoma and Indian Territory