I-17 101 traffic interchange

ADOT invites input on Riggs Road Traffic Interchange at SR 347

ADOT invites input on Riggs Road Traffic Interchange at SR 347

June 5, 2023

Study is looking at options to reduce congestion, enhance safety

PHOENIX – The Arizona Department of Transportation has launched a study to improve traffic flow and safety at State Route 347 and Riggs Road and is seeking the public’s input on possible options for a new interchange at this location.    

ADOT is evaluating a range of interchange alternatives to separate traffic on the two roadways on a new bridge. Options are detailed on the study website at tinyurl.com/riggsrdsr347. ADOT is conducting the study in partnership with the Gila River Indian Community and the Maricopa Association of Governments, and in coordination with the Bureau of Indian Affairs. 

You can provide input through June 30 in one of the following ways:

The study is expected to continue through summer of 2025. It will identify the preferred alternative in a Design Concept Report and environmental document. If a new build alternative is selected, the project is anticipated to advertise for construction in late 2026.

There will be additional opportunities to provide input, including public meetings, as the project progresses. 

This study follows a scoping study conducted by MAG on the SR 347 Corridor that identified the need for a grade-separated interchange at Riggs Road. 

More information on the current study is available at tinyurl.com/riggsrdsr347.