Wikipedia:WikiProject U.S. Roads/Arizona/Arizona history notes
Information is mainly from ADOT resolutions. Some early information is from old maps and is the year the route first appeared on the map. Early resolutions seem kind of off in places. Other information comes from a report made by the Arizona State Highway Department (ASHD) in 1939. Although some highway numbers and dates of commissioning are placed down incorrectly in the report. Obvious errors will be corrected or ignored accordingly on this page.
"Establish as state route" means assign a number; "establish as state highway" means take over maintenance.
- 1931 map (1930): California to New Mexico
- 1934 map: US 260 St. Johns to New Mexico
- 1933: US 60 east of Show Low to US 260 Concho
- 1934: New Mexico to St. Johns
- 1934 map: US 260 Headquarters to US 66 north of Adamana
- 1932: Petrified Forest to US 66
- 1951: deleted
- 1931 map: Grand Canyon to US 89 Cameron
- 1934 map: added US 66 east of Williams to Grand Canyon
- 1932: US 66 to Grand Canyon
- 1935: Grand Canyon to US 89
- 1961: US 89 northeast 47 miles
- by 1924: Topock-Kingman-Ash Fork, Ash Fork-Flagstaff-Winslow-Holbrook, Holbrook-Lupton
- 1927 map: California to New Mexico (was US 60 in 1926)
- 1934 map: US 66 Kingman to Nevada
- 1934: Kingman to Nevada
- by 1924: Holbrook-Springerville-State Line
- 1927 map: US 66 Holbrook to New Mexico
- 1932 map: renumbered US 260, US 60
- 1935: renumbered from US 180; added California to Florence Junction
- 1969: deleted California to US 60 Globe
- 1927 map: US 180 east of Buena Vista to Clifton (was SR 76 in 1926)
- 1929 map: added Clifton to US 70 Springerville
- 1934: US 60 to Springerville
- 1931 map: California to US 60 west of Salome
- by 1924: Rice-White River-Springerville (only a state highway to White River)
- 1927 map: US 180 Cutter to McNary
- 1929 map (1929): added McNary to US 70 Springerville
- 1927 map: California to US 89 Wickenburg
- 1931 map: renumbered US 60
- by 1924: part of an alternate route of Rice-Safford-Duncan
- 1934 map: US 80 Duncan to SR 71 Clifton
- 1931 map: SR 73 McNary to US 66 Holbrook
- by 1924: Clifton-Mule Creek
- by 1924: Prescott-Jerome
- 1927 map: US 89 north of Prescott to US 66 Flagstaff (was SR 89 in 1926)
- by 1924: Yuma-Phoenix, Phoenix-Globe-Rice, Florence Junction-Tucson, Tucson-Benson-Bisbee, Bisbee-Douglas-Rodeo
- 1927 map: California to New Mexico
- 1977: deleted California to I-10 Benson
- 1989: deleted
- 1989: I-10 BL Benson to New Mexico
- by 1924: Douglas-Pearce
- 1927 map: US 80 Douglas to US 180 Safford
- 1934: Safford to Douglas
- by 1924: Nogales-Fairbank-Tombstone
- 1927 map: US 89 Nogales to US 80 west of Tombstone
- 1927 map: SR 82 Sonoita to US 80 Mountain View
- 1927 map: SR 187 Casa Grande to US 80 Tucson
- 1928 map: added US 80 Gila Bend to SR 187 Casa Grande
- by 1924: Mesa-Chandler-Casa Grande
- 1927 map: SR 84 Picacho to US 80 Mesa
- by 1924: Apache Trail (alternate route of Phoenix-Globe-Rice)
- 1927 map: US 80 Apache Junction to US 180 Globe (was SR 66 in 1926)
- by 1924: Tucson-Nogales, Phoenix-Wickenburg-Prescott-Ash Fork
- 1927 map: Nogales to Utah (was US 380, US 280, US 89 in 1926)
- 1959: SR 82 to US 80
- 1927 map: Nevada to Utah
- 1936: Lowell to SR 82?
- 1960: renumbered from SR 95; added US 60/US 70 Quartzsite to California
- 1936: San Luis to US 80 Yuma
- 1938: added US 80 Yuma to SR 72 Bouse
- 1960: San Luis to US 60/US 70 Quartzsite renumbered US 95
- 1962: added SR 72 Bouse to US 66 Topock
- 1970: added California to SR 68 Bullhead City
- 1962: Hillside to Bagdad
- 1962: US 93 to SR 96
- 1974: Page to US 160
- 1978: Kolb-Grant Loop Corridor
- 1962: Indian Bend Freeway, SE corner NE 1/4 S36 T1N R4E (SR 360 at Price Road) to NE corner S1 T1N R4E (McDowell Road and Pima Road)
- ?: Northeast Outer Loop, McDowell Road to I-17
- 1987: renumbered SR 101
- 1957: 52nd Street, Broadway Road to Van Buren Street
- 1960: US 66 Flagstaff to SR 64
- 1958: US 66 to Walnut Canyon
- 1970: deleted
- 1955: San Carlos to US 70 Peridot
- 1960: SR 79 to Sedona
- by 1924: Phoenix-Globe-Rice, Rice-Safford-Duncan
- 1927 map: US 80 Florence Junction to New Mexico
- 1935: renumbered US 70
- by 1924: Mesa-Chandler-Casa Grande
- 1927 map: SR 84 Casa Grande to SR 87 Sacaton
- 1957: SR 88 Roosevelt Dam to SR 87?
- 1955: SR 90 Fort Huachaca to US 80 Tombstone via Lewis Springs
- 1977: deleted
- 1985: Red Mountain Freeway
- 1987: renumbered SR 202
- 1962: Papago Freeway, Black Canyon Freeway south of McDowell Road to NE corner S1 T1N R4E (McDowell Road and Pima Road)
- 1987: renumbered SR 202
- 1985: Southwest Outer Loop, I-10 to I-10
- 1987: renumbered SR 101
- 1985: Southeast Outer Loop, I-10 to ?
- 1987: renumbered SR 101 (west of Price Road) and SR 202
- 1932 map: US 66 Holbrook to US 60 Springerville
- 1932 map: SR 87 Coolidge to US 80 Florence
- 1959: SR 88 west of Globe to SR 260
- 1968: Paradise Parkway, Squaw Peak to Agua Fria River
- 1987: renumbered SR 50
- 1983: deleted?
- 1970: "North Roosevelt Lake", east from SR 188
- 1978: Northwest Outer Loop, I-10 to I-17
- 1985: Outer Loop Extension, SR 85 to I-10
- 1987: renumbered SR 101
- 1983: deleted?
- 1986: Alvernon Way from Valencia Road to Grant Road
- 1968: Squaw Peak Freeway, McDowell Road to Indian Bend Freeway
- 1987: renumbered SR 51
- 1985: Cotton Lane, SR 85 to US 60
- 1985: Northwest Outer Loop (not the same one as SR 417), US 60 to I-17
- 1987: renumbered SR 303
- 1986: Campbell Avenue and Kino Parkway, Valencia Road to Grant Road
- 1968: Tucson Penetration Route
- 1982: deleted
- 1966: Butterfield Freeway, I-10 near Clark Street to Cherry Avenue (connection to I-710)
- 1982: deleted