Welcome to the South Mountain Freeway information site!
The Loop 202 (South Mountain Freeway) adds 22 miles of freeway to the existing Phoenix metropolitan transportation system. The freeway connects the east and west valley while providing much needed relief to existing freeway corridors and
The Arizona Department of Transportation, in association with the Maricopa Association of Governments, and in coordination with the Federal Highway Administration and the cities of Phoenix and Peoria, has initiated a study to consider an additional general-purpose lane on Loop 303 between Lake Pleasant Parkway and Interstate 17, as well as possible future traffic interchanges on Loop 303 at 67th, 51st and 43rd avenues. The study will also determine the approximate timing of the implementation of the I-17/Loop 303 system interchange ramps. The project seeks to address growing traffic demands on Loop 303.
The Arizona Department of Transportation made improvements to the interchange at State Route 347 and Old Maricopa Road, north of the city of Maricopa. The $1.3 million project included installation of new traffic signals and construction of north- and southbound acceleration lanes for traffic entering SR 347 at Old Maricopa Road.
ADOT has several planned improvement projects on the State Route 347 corridor between Interstate 10 and State Route 238 in the city of Maricopa. This segment of SR 347 is located primarily within the Gila River Indian Community (GRIC). Therefore, all studies and projects are being coordinated with GRIC, in accordance with federal and state regulations.
The Arizona Department of Transportation, in partnership with the Gila River Indian Community and Maricopa Association of Governments, is proposing to construct improvements along SR 347, between Interstate 10 (I-10) and the northern limits of the city of Maricopa.
The Arizona Department of Transportation, in conjunction with the Federal Highway Administration, completed construction of the Interim Phase II section of State Route 24 (SR 24) also referred to as Gateway Freeway, in August 2022. This section includes approximately five miles of new freeway extending from Ellsworth Road in Maricopa County to Ironwood Drive in Pinal County.
The Arizona Department of Transportation (ADOT) will be conducting a pavement improvement project on northbound State Route 51 at Camelback Road. The approximately $1.5 million project will improve the ride quality of the freeway beneath the Camelback Road bridge by replacing a 400-foot section of the northbound SR 51 pavement.
The Arizona Department of Transportation has completed improvements to the drainage system along SR 88 between Tomahawk and Buffalo roads. The improvements included installing new pipe culverts for the intersection at SR 88 and Tomahawk Road and modifying three existing culverts in the project area.
Beginning early January 2023 through mid-2023, ADOT will be conducting pavement rehabilitation along a 14-mile section of US 60 between Loop 101 and Loop 202.
