Loop 101 and Interstate 10 System Interchange Improvements

The Arizona Department of Transportation, in partnership with the Maricopa Association of Governments, and in cooperation with the cities of Phoenix, Tolleson, Avondale, Goodyear and Glendale, will be constructing improvements to the Loop 101/Interstate 10 system interchange. 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

Fact Sheet

Fact Sheet (English)

Fact Sheet (Spanish)

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

Construction began mid-May 2026 and is expected to take approximately three years to complete.

Stay Informed

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

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

Current and upcoming Loop 101 and I-10 closures and restrictions

UPCOMING CLOSURES

ON-GOING RESTRICTIONS

Eastbound I-10 between 99th and 75th avenues will have a lane width restriction of 11 feet and a reduced speed of 55 mph from Aug. 10 to Dec. 31.

East- and westbound Thomas Road at Loop 101 will be narrowed to one lane in each direction from 9 p.m. to 5 a.m., Monday through Friday nights while the long-term turn lane restrictions are in place beginning Monday, June 8. NOTE: Left turns will still be allowed.