Interstate 10/Koli Road Traffic Interchange Study

*Previously known as the Interstate 10 (I-10) Germann Road Traffic Interchange Study

The Arizona Department of Transportation (ADOT), as the lead agency and project sponsor, in collaboration with the Gila River Indian Community (Community), the Bureau of Indian Affairs (BIA), the Federal Highway Administration (FHWA) and the Maricopa Association of Governments, has initiated an Environmental Assessment (EA) and Design Memo (DM) for the proposed Interstate 10 (I-10)/Koli Road Traffic Interchange.

The proposed I-10/Koli Road Traffic Interchange would be located on I-10 between the existing Wild Horse Pass Boulevard and State Route 347/Queen Creek Road traffic interchanges.

The study area limits extend approximately a half mile from each side of the I-10 center line to Maricopa Road and approximately three-quarters of a mile north of milepost 163 and 1.8 miles south of milepost 163 along I-10. The project is located in Maricopa County and entirely within the Gila River Indian Community.

The draft EA will consider and assess alternatives for the proposed traffic interchange, including a no-build alternative. Some considerations analyzed in-depth in the draft EA include the proposed project’s impacts on cultural resources, biological resources, water quality, recreational resources, noise impacts and air quality, as well as other social, economic, and environmental impacts.

Public scoping was the first step of the National Environmental Policy Act (NEPA) environmental study process. The public scoping and alternatives process provided the opportunity for the community and public to educate the study team about the I-10/Koli Road Traffic Interchange study area, as well as share concerns about modifying I-10 to incorporate a proposed traffic interchange at approximately Koli Road.

This input helped ADOT, the Community, and MAG select a Recommended Build Alternative for this section of I-10 and Koli Road.

The next step in the process will be the I-10/Koli Road Traffic Interchange Study Public Hearing. 

I-10/Koli Road Traffic Interchange Study Public Hearing

Your input is important!

Draft EA and DM available for public review and comment  

The draft EA and DM evaluate the Recommended Build Alternative as compared to the No-Build Alternative. Select technical reports associated with the draft EA will be available upon request. Please email [email protected] or call 602.522.7777 to make a request. 

The draft EA and DM can be reviewed at the following repository locations and online from July 14, 2025, to Aug. 13, 2025.

• Chandler Public Library – Downtown
  22 S. Delaware St., Chandler, AZ 85225 | 480.782.2800
• Ironwood Library
  4333 E. Chandler Blvd., Phoenix, AZ 85048 | 602.262.4636
• Maricopa Association of Governments
  302 N. 1st Ave, Suite 200, Phoenix, AZ 85003

Comment on the Draft EA and DM 

Submit your comments on the I-10/Koli Road Traffic Interchange Study draft EA and DM from July 14, 2025, through Aug. 13, 2025. All comments received during the public comment period will be documented and responded to in the I-10 Koli Road Traffic Interchange Study Final EA and DM. All comment methods are considered equal. 

Provide written/verbal comments at the virtual public hearing. 

• Online through our comment form (Coming Soon)
• Call: 602.522.7777 
• Email: [email protected] 
• Mail:
  I-10/Koli Road Traffic Interchange Study Office 
  7130 W. Fairview St.,
  Chandler, AZ 85226

Virtual Public Hearing

A virtual public hearing will be held to provide an overview of the draft EA and DM, share ADOT’s preliminary recommendation and accept public comment. The public hearing presentation and materials will also be available on the website. 

Wednesday, July 30, 2025 | 5:30 – 7 p.m.
Call-in/Online through Zoom

English
Online: bit.ly/3GHOrf5 | Phone: +1 646.876.9923 
Webinar ID: 928 4590 2660
Passcode: KoliRoad or 70876696 

Español
Enlace (Inglés): bit.ly/3GHOrf5 | Teléfono: +1 646.876.9923 
Número de Reunión (Código de acceso): 928 4590 2660
Clave: KoliRoad o 70876696

I-10/Koli Road Traffic Interchange Study Scoping and Alternative Public Meeting Presentation Documents

I-10 Koli Road Fact Sheet

I-10 Koli Road Display Boards

I-10 Koli Road Study Alternatives and Scoping Meetings Summary

We want to hear from you.

Contact the I-10/Koli Road Traffic Interchange Study Team.

• Call the toll-free bilingual project information line: 855-712-8530
• Email: [email protected]
• Mail:
  I-10/Koli Road Traffic Interchange Study Office
  7130 W. Fairview St.,
  Chandler, AZ 85226