Unconstructed state routes in Arizona

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Below is a list and summary of the unconstructed state highways in the U.S. state of Arizona. Some are currently proposed while the others have been since cancelled prior to being constructed.

State Route 30[edit]

State Route 30

State Route 30 (formerly State Route 801), also known as the I-10 Reliever, is a planned state highway in the southwest parts of Phoenix, Arizona and nearby suburbs. It will connect the southern terminus of Loop 303 with the South Mountain leg of Loop 202. It is planned as a controlled-access freeway to relieve heavy traffic congestion experienced along Interstate 10 in the area.

State Route 50[edit]

State Route 50
LocationPhoenix to Glendale

State Route 50, also known as the Paradise Parkway, was a proposed urban freeway through Glendale and Phoenix. Originally proposed in 1968 as SR 317,[1] the freeway would have run east to west, connecting the future State Route 51 and Loop 101, while running roughly parallel to, and 4 miles (6.4 km) north of, I-10 in the vicinity of Camelback Road. The proposed freeway was reassigned as SR 50 in 1987.[2] As the proposed freeway would have crossed through largely developed land and densely populated neighborhoods, it proved to be both extremely expensive and highly unpopular. The route was eventually struck from state planning maps[3] and all land acquired for right-of-way was subsequently sold, the funds being used to pay for other transportation projects.

State Route 76[edit]

State Route 76
LocationSan Manuel to SR 77

State Route 76 was a proposed state highway in eastern central Arizona, United States that would have connected State Route 77 and San Manuel. There was a planned extension to Benson which would have been State Route 176. It was designated in 1962 but was never built, and was cancelled in 1988. It would have followed the San Pedro River on its entire length.

Browse numbered routes
SR 75SR 76SR 77

U.S. Route 93T[edit]

U.S. Route 93T
LocationKingman to Wickenburg

U.S. Route 93T was a proposed temporary extension of US 93 following US 66 and US 89 from Kingman to Wickenburg while the final route of US 93 was to be constructed through Wikieup. The idea was abandoned in 1937, the same year it was proposed. The proposal for US 93 to be extended past Kingman towards Phoenix was denied by the AASHO also in 1937. It wouldn't be until 1965 that US 93 would exist south of Kingman.[4]

Browse numbered routes
US 93AUS 93TUS 95

State Route 176[edit]

State Route 176
LocationSan Manuel to Benson

State Route 176 was a proposed state highway in eastern central Arizona, that would have connected Benson and San Manuel before reaching State Route 77. It was designated in 1967 but was never built, and was cancelled in 1988. It would have followed the San Pedro River on its entire length.

Browse numbered routes
SR 173SR 176SR 177

U.S. Route 193[edit]

U.S. Route 193
LocationSacaton to Picacho

U.S. Route 193 was a proposed U.S. Highway highway that would have taken over the route of SR 87, SR 187 and SR 84 between Sacaton and Picacho, via Casa Grande. It was proposed by the Arizona Highway Department as a branch of a proposed extension of US 93 at the time. By 1937, the route was briefly redesignated US 93A before the proposal was subsequently dropped. The proposed extension of mainline US 93 was denied by the AASHO the same year.[4]

Browse numbered routes
SR 93US 93AUS 93T
US 191US 193SR 195

State Route 380[edit]

State Route 380
LocationSt. Johns to New Mexico

State Route 380 was a proposed state route that was never constructed in the eastern part of the state of Arizona. It was proposed, starting in the town of St. Johns and would have ended at the New Mexico state line. It shows up on some state maps starting in 1970, but was never built. The road proposed is currently a dirt ranch road. In St. John's, it would have begun at a junction with U.S. Route 180, a child of U.S. Route 80. It would have connected with the recently cancelled NM 191.

Browse numbered routes
SR 377SR 380SR 386

State Route 487[edit]

State Route 487
LocationFlagstaff to SR 87

State Route 487 was a state route that was never constructed in the north-central part of Arizona. Arizona Department of Transportation was added to the state highway system in 1967 between Flagstaff and State Route 87 near Happy Jack. It did show on state maps during the early 1970s, but the route disappeared in the mid to late '70s. The road currently exists today as Coconino County Road 3.

Browse numbered routes
SR 473SR 487SR 504

Interstate 710[edit]

Interstate 710

Interstate 710 (I-710) was proposed to follow the current alignment of the Kino Parkway, an at-grade parkway, between Broadway Road and I-10 in Tucson, Arizona, but it was never built. This freeway, if built, would have served the downtown area, the University of Arizona campus, and the industrial area between the railroad and I-10; an extension to Tucson International Airport.[5] It first appeared on a Tucson map in 1971.[citation needed] Strong community opposition to freeways in Tucson was a major reason for cancellation of the project on April 16, 1982; the Tucson area has long been opposed to the rapid urban sprawl since.[6]

US Bicycle Route System[edit]

Future US Bicycle Routes in Arizona include USBR 66, 70, 79, and 90.[7]


  1. ^ Breyer, Joe. "ADOT Right-of-Way Resolution 1968-070". Arizona Highway Data. Works Consulting LLC. Retrieved March 2, 2016.
  2. ^ Breyer, Joe. "ADOT Right-of-Way Resolution 1987-11-A-105". Arizona Highway Data. Works Consulting LLC. Retrieved March 2, 2016.
  3. ^ Breyer, Joe. "ADOT Right-of-Way Resolution 1996-08-A-041". Arizona Highway Data. Works Consulting LLC. Retrieved March 2, 2016.
  4. ^ a b Weingroff, Richard (17 October 2013). "U.S. 93 Reaching For The Border". General Highway History. Federal Highway Administration. Retrieved 4 June 2015.
  5. ^ "I-710". Arizona Roads. Retrieved October 5, 2014.[self-published source]
  6. ^ Tucson Area Transportation Planning Agency (c. 1971). Major New Transportation Corridors (Map). Scale not given. Tucson: Tucson Area Transportation Planning Agency. Retrieved October 5, 2014 – via Arizona Roads.
  7. ^ Adventure Cycling Association, U.S. Bicycle Route System National Corridor Plan, Adventure Cycling Association, retrieved May 7, 2015

External links[edit]