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South Mountain Freeway construction in early 2017 will lay a foundation

Developer, ADOT detail plans for start of mainline construction
December 21, 2016

SMF Construction Phasing Map with Title 12 22 2016_1PHOENIX – Construction scheduled to start early next year on the Loop 202 South Mountain Freeway may not be as visual as the 22 miles of uninterrupted asphalt to come, but each task lays a foundation for completing this link between the West Valley and East Valley by the end of 2019.

Along the freeway corridor in the first half of 2017, you may see crews setting foundations for some of the 40 bridges that will be built, including two 2,700-foot-long spans across the Salt River. Or widening eastbound lanes of Pecos Road to maintain two-way traffic flow during construction. Or creating access roads at the freeway’s future interchange with Interstate 10 in west Phoenix.

Other construction scheduled for early 2017 by Connect202 Partners, the developer responsible for designing and building the $1.77 billion freeway, includes creating drainage structures and roadway embankments, relocating utilities and continuing to extend HOV lanes west from the Loop 202 Santan Freeway.

As mainline work starts on the Arizona Department of Transportation’s largest-ever highway project, detailed information on these and other construction plans, as well as traffic impacts, is available at You can also sign up there to receive project alerts.

Freeway construction is divided into four segments: I-10 Papago, between the I-10 Papago Freeway interchange at 59th Avenue and Lower Buckeye Road; Salt River, from Lower Buckeye Road to 51st Avenue near Estrella Drive; Center, from 51st Avenue to 32nd Lane; and Pecos Road, from 32nd Lane to the I-10/Loop 202 Santan Freeway interchange. Click on the map above to see it at full size.

In the first half of 2017, construction will occur in all but the Center segment, where work isn’t scheduled to begin until mid-2018. For more information on construction planned in particular segment, visit (click Construction Info).

Preliminary construction began in September with improvements to the I-10/Loop 202 Santan Freeway interchange, including extending Loop 202 HOV lanes and widening the Pecos Road shoulders to near 48th Street. On the west side of the project, utility work has included relocating large Salt River Project siphons carrying water under I-10.

The 22-mile freeway, expected to open late 2019, will provide a long-planned direct link between the East Valley and West Valley and a much-needed alternative to Interstate 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.


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Civil RightsTitle VI of the Civil Rights Act of 1964, and the Americans with Disabilities Act (ADA)

Pursuant to Title VI of the Civil Rights Act of 1964, and the Americans with Disabilities Act (ADA), ADOT does not discriminate on the basis of race, color, national origin, age, sex or disability. Persons that require a reasonable accommodation based on language or disability should contact ADOT’s Civil Rights Office at Requests should be made as early as possible to ensure the State has an opportunity to address the accommodation.

De acuerdo con el título VI de la Ley de Derechos Civiles de 1964 y la Ley de Estadounidenses con Discapacidades (ADA por sus siglas en inglés), el Departamento de Transporte de Arizona (ADOT por sus siglas en inglés) no discrimina por raza, color, nacionalidad, edad, género o discapacidad.  Personas que requieren asistencia (dentro de lo razonable) ya sea por el idioma o por discapacidad deben ponerse en contacto con la Oficina de Derechos Civiles en Las solicitudes deben hacerse lo más pronto posible para asegurar que el equipo encargado del proyecto tenga la oportunidad de hacer los arreglos necesarios.