Transportation Studies

Interstate 10 / Houghton Traffic Interchange Study

Meetings and Events

The Arizona Department of Transportation and the Federal Highway Administration hosted an open house about the proposed replacement of the traffic interchange at Interstate 10 and Houghton Road. The meeting was held Thursday, Feb. 8, 2018.

Meeting Documents
About the Project

ADOT is beginning the design process for a project to replace the traffic interchange at I-10 and Houghton Road, a primary roadway that serves north-south traffic in the southeastern part of Tucson and Pima County. The interchange was included in a prior Design Concept Report for a larger section of Interstate 10 in the Tucson area and has been scheduled for replacement in 2020. The project team is proposing a Diverging Diamond Interchange (DDI) to provide relief for motorists accessing existing and planned residential and business developments in the surrounding areas.

Questions and Comments

Your input is important and will be considered during the design process. If you are unable to attend the open house, you can provide comments or ask questions in these ways:

  • Call the ADOT Project Information Line at: 855.712.8530
  • Email:
  • Mail written comments to ADOT Communications: 1655 W. Jackson Street, MD 126F, Phoenix, AZ 85007
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