Loop 101 and Interstate 10 System Interchange Improvements

Overview

The Arizona Department of Transportation completed a study in 2023 that evaluated improvements to the Loop 101 (Agua Fria Freeway) and Interstate 10 system interchange in the West Valley, producing a Design Concept Report.

This project is in partnership with the Maricopa Association of Governments, and in cooperation with the cities of Phoenix, Tolleson, Avondale, Goodyear and Glendale. This project is included in the Regional Transportation Plan for Maricopa County and is funded through Prop 400, a countywide dedicated half-cent sales tax for transportation improvements approved by voters in 2004.

The purpose of the project is to:

• Mitigate weaving movements for HOV traffic
• Improve safety and traffic operations
• Improve movement at traffic interchanges and surface streets
• Accommodate future widening projects

Project Area

Project Elements

• A new Direct High-Occupancy Vehicle (DHOV) ramp within the existing interchange that will accommodate travel to/from the north along Loop 101 and to/from the east along I-10.
• Widening of Loop 101 and I-10 to accommodate the new DHOV ramp
• A new connection from the south to east freeway system ramp and 91st Avenue, called a ‘slip ramp.’
• An extension of the southbound Loop 101 off-ramp at McDowell Road
• Noise walls, where warranted
• Possible minor right-of-way impacts

Schedule

The project concluded the Final Design phase in early 2025. It is advertising for construction in fall 2025, and is expected to begin construction in early January 2026.

Stay Informed

Please Subscribe to receive project updates by email.

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

• Phone: ADOT Bilingual Project Information Line: 855.712.8530
• Email: [email protected]
• Mail: ADOT Communications, 1655 W. Jackson St., MD 126F, Phoenix, AZ 85007