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Peoria, Arizona El Mirage Road Extension project from Loop 303 to Jomax Road. Project partners include the City of Peoria, Arizona Department of Transportation (ADOT), Maricopa Association of Governments (MAG), and Maricopa County.

El Mirage Road Extension
Loop 303 to Jomax Road Final Design

The image shows El Mirage Road, a two-lane paved road stretching into the distance under a bright blue sky with scattered clouds. The road has double yellow lines in the center and white lines on the edges. On both sides of the road, there is a desert landscape with sparse vegetation, including bushes and small plants. In the background, there are low-lying mountains and hills. A 35-mile per hour speed limit sign is visible on the right side of the road.

Overview

The City of Peoria, in cooperation with the Arizona Department of Transportation (ADOT), Maricopa Association of Governments (MAG), Maricopa County and other agencies, began the final design phase of the El Mirage Road: Loop 303 to Jomax Road project in spring 2026. Final design is anticipated for completion in fall 2027 and construction of the four-lane roadway could begin as early as 2028. 

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The improved roadway corridor will help meet current and future traffic needs in this rapidly growing area, create another connection to and from Loop 303 in north Peoria and improve regional connectivity. It will also provide active transportation amenities, including a bicycle path and sidewalks and maintain access to the Maricopa Trail.

Project improvements include:

  • Extending and widening El Mirage Road between Loop 303 and Jomax Road to provide two travel lanes in each direction separated by a median with a six-foot-wide bicycle lane and eight-foot-wide sidewalk in both directions.

  • Restriping 2,000 feet of El Mirage Road between Corte Bella Drive and Loop 303 (no new roadway reconstruction will occur south of Loop 303).

  • Constructing crossings over the McMicken Dam Outlet Channel and the Beardsley Canal. Both crossings will include bicycle lanes, sidewalks and safety railing. A reinforced concrete box culvert is planned at the McMicken Dam Outlet Channel and a single-span concrete bridge is planned over the Beardsley Canal. 

  • Signalizing the El Mirage Road intersections at the Loop 303 traffic interchange and Happy Valley Road.

  • Constructing roundabouts at the El Mirage Road intersections with Mariposa Grande Lane, Coldwater Ranch Drive and Jomax Road. 

A gray concrete box culvert with 10 openings and surrounded by rocks that was recently constructed over a wash on Mariposa Grande Lane, about 1,000 feet east of its intersection with El Mirage Road.

A concrete box culvert similar to this one will be constructed at McMicken Wash. This box culvert was recently constructed at Marioposa Grande Lane about 1,000 feet east of its intersection with El Mirage Road.

An aerial photograph of the gray-colored, single-span bridge over the Beardsley Canal at Happy Valley Road. The bridge that will be constructed over the Beardsley Canal just south of Jomax Road will be similar to this one.
A ground-level photograph of the gray-colored, single-span bridge over the Beardsley Canal at Happy Valley Road. The bridge that will be constructed over the Beardsley Canal just south of Jomax Road will be similar to this one.

The single-span bridge that will be constructed over the Beardsley Canal south of Jomax Road will be similar to this one at Happy Valley Road.

An illustration of the El Mirage Roadway corridor cross section. It shows the 130-foot-wide roadway corridor featuring two travel lanes in each direction with vehicles driving on them, eight-foot sidewalks in each direction being used by pedestrians and runners, six-foot bicycle lanes in each direction being used by cyclists, areas of proposed right-of-way and a 38-foot-wide median.

This rendering illustrates the four-lane interim roadway corridor cross-section being refined during final design. The roadway corridor will slope to the outside for drainage. The 38-foot median would accommodate future widening to the ultimate, six-lane configuration. However, the four-lane interim roadway corridor is expected to accommodate traffic through 2050.  

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The environmental review, consultation and other actions required by applicable Federal environmental laws for this project are being or have been carried out by ADOT pursuant to 23 USC 327 and a Memorandum of Understanding dated 06/25/2024 and executed by the Federal Highway Administration (FHWA) and ADOT. 

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