Central District Projects

Central District Projects

South Mountain Freeway

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

L303 Lake Pleasane
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.
Loop 303
ADOT has initiated a project to construct a new segment of Loop 303 between Maricopa County Road 85 (MC 85) and Van Buren Street in Goodyear.
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. 
SR 347 Projects Map

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.

SR 347 Corridor Widening Intersections Map


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.



SR24 Ellsworth to Ironwood pipe

This project is complete

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. 

SR51 at Camelback Rd
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.
Project map

This project is complete

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.

Map US 60 L101 to L202 Pavement Preservation
Diamond Grinding with card on the road
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.