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Ever wonder how the names of highways and freeways are chosen?
The Arizona State Transportation Board and the Arizona State Board on Geographic and Historic Names participate in a collaborative process to determine the names of highways. As part of the development and planning for the Regional Freeway System in the 1980s, a process was undertaken by the Arizona State Transportation Board, Maricopa Association of Governments and ADOT to identify names and numbers for freeways in the Valley.
Names for freeways and highways have been derived from geographic features and historical names identified with the regional location of the freeway or highway, such as Red Mountain and the Red Mountain Freeway in the East Valley or the Agua Fria River and Agua Fria Freeway in the West Valley.
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| Central |
Interstate 10 (Maricopa Freeway) |
Interstate 17 (Black Canyon Freeway) South of Loop 101 |
State Route 51 (Piestewa Freeway) |
State Route 143 (Hohokam Expressway) |
| US 60 (Superstition Freeway) |
| East Valley |
Loop 101 (Pima Freeway) |
| Loop 101 (Price Freeway) |
| Loop 202 (Red Mountain Freeway) |
| Loop 202 (Santan Freeway) |
| State Route 87 (Duthie-Martin Highway) |
| State Route 24 (Williams Gateway Freeway) |
| Northwest |
Interstate 17 (Black Canyon Freeway) North of Loop 101 |
| Loop 101 (Agua Fria Freeway) |
| Loop 303 North of I-10 |
| State Route 74 (Carefree Highway) |
| US 60 (Grand Avenue) |
| Southwest |
Interstate 10 (Papago Freeway) |
| Loop 202 (South Mountain Freeway) |
| Loop 303 South of I-10 |
| State Route 85 |
| State Route 801 |
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Our Valley Freeway System is part of the 2004 voter-approved Regional Transportation Plan. We are working hard with our transit partners to implement the voters’ vision and are committed to quality, safety, open communication with our neighbors, and minimal inconvenience to the traveling public. |
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