Proposition 479

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Proposition 479 (formerly Prop 400) is a measure on the ballot for the November 5, 2024 General Election in Maricopa County, Arizona. Voters will decide whether to extend the existing half-cent sales tax dedicated to transportation for an additional 20 years. An extension would fund ongoing and future transportation projects.

The half-cent sales tax for transportation was first approved by Maricopa County voters in 1985 with Proposition 300. The tax was then extended by Maricopa County voters for another 20 years in 2004 through Proposition 400. The extension is set to expire at the end of 2025.

Expected Outcomes if it Passes

  1. Continuation of Funding: Another extension of the half-cent sales tax would provide $24 billion in funding for transportation projects in Maricopa County over 20 years.
  2. Comprehensive Transportation Enhancements: The generated tax revenue would support certain transportation improvements throughout the region, including:
    1. Building new freeways.
    2. Expanding existing freeways.
    3. Improving streets and intersections.
    4. Continuation of existing transit services and new system enhancements.

Prop 479’s Funding Allocation

  • Freeways and State Highway System: 40.5% for the development and expansion, including new freeways and improvements to existing routes.
  • Public Transportation: 37% dedicated to public transit options across the county.
  • Arterial Streets and Regional Transportation Infrastructure: 22.5% allocated for street improvements, intersection upgrades, and other critical infrastructure projects

Prop 479 Estimated 20-Year Direct Investment in Chandler in 2021 $’s

  • Freeways: $123 million
  • Arterial Streets: $115 million
  • High-Capacity Transit: $136 million
  • Bus Transit: $301 million
  • Regional Programs: $197 million

In total Prop 479 is estimated to bring a direct transportation investment of roughly $872 Million into Chandler over the next 20 years. 
These figures are in 2021 dollars.

Completed Prop 400 Funded Projects in Chandler 

Completed Prop 400 Funded Projects in Chandler

This map summarizes Proposition 400-funded projects in Chandler across its various modes. 

Future Projects in Chandler Proposed Under Prop 479 

Future Projects in Chandler Proposed Under Prop 479

This map outlines proposed projects in the City of Chandler that are planned to proceed with the approval of Proposition 479. These projects encompass freeway and arterial widening, the establishment of new freeway interchanges, and upgrades to transit systems.

Additional Information

Regional Transportation Plan
Maricopa Association of Governments: Prop 479