State Route 30: Loop 303 to Loop 202 Study

State Route 30, Loop 303 to Loop 202

Project Background

In 2019 the Arizona Department of Transportation (ADOT) completed an environmental and engineering study that identified the selected route for the future State Route 30 (SR 30) freeway corridor between Loop 202 at approximately 59th Avenue and the future Loop 303 at approximately Sarival Avenue , which would serve as an alternate route to Interstate 10. Additional segments of SR 30 are planned to the east between Loop 202 and I-17 and to the west between Loop 303 and MC 85.

Selected Alternative Map

Design and construction of SR 30 between Loop 202 and Loop 303 - as well as other future segments of SR 30 - will occur in phases, as identified in the Regional Strategic Transportation Infrastructure Investment Plan(RSTIIP). Future SR 30 improvements are funded in part through Proposition 479, a dedicated half-cent sales tax for transportation approved by Maricopa County voters in 2024.

SR 30, 97th Avenue to Loop 202

Overview

This project will create a new 4.5-mile segment of SR 30 between 97th Avenue and Loop 202. In addition to constructing SR 30, the project includes improvements to Loop 202 to accommodate the new system interchange with SR 30.

The project includes:

A new freeway with three general-purpose lanes in each direction
A new system-to-system interchange at SR 30 and Loop 202 (South Mountain Freeway)
Traffic interchanges at 91st, 83rd and 67th avenues
New bridges at 91st, 83rd, 75th and 67th avenues
Widening existing bridges at Loop 202 and Baseline Road, Southern Avenue, Broadway and Lower Buckeye roads, the Roosevelt Irrigation Canal and Buckeye Road, to accommodate new SR 30/Loop 202 system ramps
Drainage improvements and new lighting throughout the project area
Noise walls where warranted

Project Map, 97th Ave to Loop 202

The initial SR 30 freeway is being designed to accommodate anticipated growth and future traffic volumes through 2050, with the ability to expand to the ultimate planned roadway configuration consisting of four general purpose lanes and one HOV lane in each direction, and direct connecting HOV ramps between SR 30 and Loop 202.

Project Timeline*, SR 30, 97th Ave to Loop 202:

This project is currently in the design phase.
Fall 2026: Anticipated design completion
Spring 2027: Construction anticipated to begin
- Construction is expected to take approximately two years