I-10 Marana to Cortaro Roads Traffic Circulation Study
I-10 Marana to Cortaro Roads Traffic Circulation Study
Overview
The Arizona Department of Transportation is conducting a traffic circulation study along Interstate 10 within Pima County. The objective of this study will determine the best and most cost-effective options for reducing traffic delays and congestion on Interstate 10 at Marana Road and Cortaro Road including all intersections in between.
Study Process
- Review findings from previous studies
- Collecting data on current conditions
- Conducting data analysis on existing traffic conditions
- Developing potential solutions
- Conducting public outreach and obtaining input
- Developing an environmental overview and other documentation
- Defining a preferred alternative considering the projected inflation costs and expenditure
- Drafting and finalizing a final report
Study Area Map
Study Schedule
- Fall 2025 - Current Conditions Review and Environmental Analysis completed
- Spring 2026 - Conduct Data Analysis and Potential Solutions Development in progress.
- Summer 2026 - Distribute Community-Wide Traffic Study Comment Survey
- Fall 2026 - Draft Preferred Alternative & Planning Level Scoping documents
- Winter 2026 - Begin Draft Traffic Circulation Report
- Winter 2026 - Begin Final Report & 15% plans for construction
The study schedule is subject to change.
Stay Informed
ADOT welcomes your questions and comments. Please contact us in any of these ways:
- By email: Subscribe to receive study updates.
- By phone: Call the ADOT Project Information Line at 855.712.8530.
- Online: Submit a question or comment via email to Dulce Maria Rojo at [email protected]
- By Mail: Kimley-Horn,3300 East Sunrise Drive, Suite 130, Tucson, AZ 85718
For real-time highway conditions statewide, follow ADOT on Twitter (@ArizonaDOT), visit az511.gov or call 511, except while driving.