A South Mountain Freeway was included in the Regional Freeway
System plan that was approved by Maricopa County voters in 1985.
A conceptual design and state-level Environmental Assessment
were completed in 1988. As presented in the Environmental
Assessment, the freeway would connect Interstate 10 south of
Phoenix with Interstate 10 west of the city, following an east-west
alignment along Pecos Road, through the western tip of South
Mountain Park, then north to Interstate 10 between 55th and 63rd
The north-south leg of the freeway would pass near the
community of Laveen and through agricultural lands within the
city of Phoenix. After it passed South Mountain Park and turned
to the east, the freeway would pass through the Ahwatukee/
Foothills community, following an alignment along Pecos Road.
The Arizona Department of Transportation (ADOT) and the
Federal Highway Administration are conducting a new engineering
and environmental study kno
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