Loop 101 (Agua Fria Freeway), 75th Avenue to I-17 Improvements

Loop 101 (Agua Fria Freeway), 75th Avenue to I-17 Improvements



The Arizona Department of Transportation, in cooperation with the cities of Glendale, Phoenix and Peoria, the Federal Highway Administration and the Maricopa Association of Governments, has initiated a project to widen and make other improvements to the Loop 101 (Agua Fria Freeway) between 75th Avenue in Glendale and Interstate 17 in Phoenix. The project seeks to address growing traffic demands in the northwest Valley and relieve traffic congestion on the Loop 101 during the morning and evening peak travel periods. The project will connect with the Loop 101 Pima Freeway widening project east of I-17, completed in 2022.

Fact Sheets



Project Elements

  • Adding one general purpose lane to the outside of Loop 101  in each direction between 75th Avenue and I-17 within the existing freeway right-of-way.
  • Widening bridges at 51st, 35th and 31st avenues and constructing new retaining walls to accommodate the freeway expansion.
  • Modifying interchange ramps and frontage roads in some locations.
  • Interchange improvements at 75th Avenue to add a third southbound left turn lane onto eastbound Loop 101 within the existing roadway.  
  • Adding or modifying noise walls in some locations where warranted.
  • Converting existing freeway lighting to efficient LED lights.
  • Modifying the existing freeway drainage system.
  • Replacing impacted landscaping


  • The project is currently in the design phase
  • Per current program funding, project construction is anticipated to begin in late summer or early fall of 2024
  • PUBLIC MEETING - The project team presented information and answered questions about the design plans for the Loop 101 widening project at a virtual public meeting held the evening of Thursday, Feb. 24, 2022. A video recording of the meeting and other project information can be found here


Noise Reports

Final Noise Report - Aug. 3, 2021

Addendum 1 to Final Noise Report - Feb. 2, 2022


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Submit questions and comments or request information in any of the following ways:

  • By Phone: ADOT Project Information Line: 855.712.8530
    Línea de Información del Proyecto ADOT: 855.712.8530
  • Online: Visit azdot.gov/contact and select Projects from the drop-down menu
  • By Mail: ADOT Communications, 1655 W. Jackson St., MD 126F, Phoenix, AZ 85007