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East of Tucson, I‑10 parallels and, in some cases, overlies old US 80 to Benson, and was originally cosigned as US 80 and SR 86. The section of I-10 from Valencia Road to Rita Road was the first construction project in the state of Arizona funded by the Federal Aid Highway Act of 1956. Construction began in 1957 and was completed in 1960.
Interstate 10 (I-10) is the southernmost transcontinental highway in the Interstate Highway System of the United States. It is the fourth-longest Interstate in the country at 2,460.34 miles (3,959.53 km), following I-90, I-80, and I-40. It was part of the originally planned Interstate Highway network that was laid out in 1956, and its last ...
It later became part of I-10 as I-10 was rerouted and the old route became part of I-17. The longest Interstate in Arizona is I-10, which spans 392.33 miles (631.39 km) [ 1 ] across southern and central Arizona, and the shortest Interstate is I-15, which only traverses the northwestern corner of the state, running from Nevada to Utah , spanning ...
The present-day interchange with Interstate 10 was for 48th Street, completed in 1967 as part of the original I-10 freeway construction through the southeast sections of the valley such as the Tempe and Chandler suburbs. [3] The final design was released in 1974, when SR 143 was not yet a freeway, but a parkway with traffic signals and ...
The same principle applies with business routes for all other Interstates in Arizona. [3] Designations listed under Highway Logs and GIS data however, use the Arizona Transportation Information System (ATIS) nomenclature. The ATIS designation for a non-suffixed state route is "S (Number)". The number at the end is always three digits long.
SR 87 begins 0.95 miles (1.53 km) to the north of I-10 at a junction with an unsigned orphan segment of SR 84, which serves as a direct connection to I-10 at Exit 211. [1] SR 87 travels north for 16 miles (26 km) toward Coolidge, passing by the town of Eloy. In Coolidge, State Route 87 is known as Arizona Boulevard.
U.S. Route 191 (US 191) is a north–south U.S. Highway in eastern Arizona.The highway runs for 516.50 miles (831.23 km), making it Arizona's longest numbered highway. The highway begins at State Route 80 near Douglas and crosses over the Utah state line near Mexican Water in the Navajo Nat
In 2011, ADOT started a study to connect SR 210 to I-10 at Alvernon Way in southeast Tucson. [10] The new roadway would be built to freeway standards from I-10 to the current terminus at Golf Links Road. [11] In December 2020, ADOT released final design concept report on the extension as part of the I-10 widening project.