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59th Avenue frontage road construction starts on South Mountain Freeway

Drivers should consider 51st/67th avenues as alternates during construction
September 19, 2018

PHOENIX – Changes are in store for motorists traveling along 59th Avenue south of Interstate 10 with work starting on frontage roads between Roosevelt Street and Lower Buckeye Road in west Phoenix as part of Loop 202 South Mountain Freeway construction.
SMF Mainline-Frontage Road Construction Photo

The Arizona Department of Transportation project is creating 2.5-mile frontage roads to maintain northbound and southbound access to businesses and residences adjacent to the freeway.

With various traffic shifts and lane restrictions planned along 59th Avenue for this construction, motorists should consider alternate routes such as 51st and 67th avenues. While business access will be maintained at all times during freeway and frontage road construction, delays are likely.

Currently, crews are relocating various underground utilities (cable, water, power, sewer, gas) along the 59th Avenue alignment prior to construction of the frontage roads.
59th Avenue Construction Photo

To complete the freeway and frontage roads from Roosevelt Street to Lower Buckeye Road, more than 1 million cubic yards of dirt needs to be moved, compacted and graded. The one-way frontage roads will include two travel lanes in each direction and will have traffic signals at each major intersection.

During construction, motorists should slow down, obey the speed limit and allow extra travel time.

The South Mountain Freeway will provide a long-planned direct link between the East Valley and West Valley and a much-needed alternative to I-10 through downtown Phoenix. Approved by Maricopa County voters in 1985 and again in 2004 as part of a comprehensive regional transportation plan, the South Mountain Freeway will complete the Loop 202 and Loop 101 freeway system in the Valley.
59th Avenue SMF-Frontage Rd Map

You can stay informed about the South Mountain Freeway project and sign up for updates and weekly traffic alerts at

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De acuerdo con el Título VI de la Ley de Derechos Civiles de 1964, la Ley de Estadounidenses con Discapacidades (ADA por sus siglas en inglés) y otras normas y leyes antidiscriminatorias, el Departamento de Transporte de Arizona (ADOT) no discrimina por motivos de raza, color, origen nacional, sexo, edad o discapacidad. Las personas que requieran asistencia (dentro de lo razonable) ya sea por el idioma o discapacidad deben ponerse en contacto con la Oficina de Derechos Civiles de ADOT en Las solicitudes deben hacerse lo más antes posible para asegurar que el Estado tenga la oportunidad de hacer los arreglos necesarios.