Metro Creative Connection
Submitted by Maricopa Association of Governments
Dec. 31, 2025, will mark the end of half-cent sales tax collections authorized under Proposition 400 that helped build transportation infrastructure throughout Maricopa County.
Looking back at the last 20 years, Prop 400 funded construction of Loop 202 (South Mountain Freeway), Loop 303 in the West Valley and the interim State Route 24 (Gateway Freeway) in the Southeast Valley.
To date, the Proposition 400 tax revenue has helped fund more than 440 corridor miles of freeway and highway projects in the region, 315 corridor miles of street improvements, as well as the extension of the light rail and increased bus service throughout the region.
In November 2024, Maricopa County voters passed Proposition 479, ensuring 20 more years of transportation investment, with collections beginning on Jan. 1, 2026.
To learn more about how Prop 479 will continue to strengthen the region’s infrastructure and what projects are planned Valleywide, visit azmag.gov/Prop479.
Please submit comments at yourvalley.net/letters or email them to AzOpinions@iniusa.org. We are committed to publishing a wide variety of reader opinions, as long as they meet our Civility Guidelines.
Keywords
Proposition 400,
Prop 400,
Proposition 479,
Prop 479,
transportation,
infrastructure,
Maricopa Association of Governments