South Central Projects

Interstate 10: Ina Road Traffic Interchange Final Design

I-10 currently passes over Ina Road, and with this project, Ina Road will become elevated and pass over I-10 and Union Pacific Railroad. The existing frontage roads and ramps will require reconstruction to intersect with the crossroad in its reconstructed (elevated) position.

The project includes two-lane, one-way frontage roads along each side of I-10 and necessary crossroad widening at the frontage road intersections and eliminate the existing at-grade railroad crossings of the Union Pacific Railroad tracks at Ina Road. The proposed improvements shown for I-10 meet the long-range planning objectives of ADOT, the town of Marana, Pima County, Pima Association of Governments and the RTA and improve the capacity, public safety and operational characteristics of the Ina Road TI. This project will also remain sensitive to environmental concerns and cultural resources.


Project Timeline
I-10 Ina Rd TI Timeline
Project schedule is subject to change.


Draft Environmental Assessment Re-Evaluation

The Arizona Department of Transportation (ADOT) and the Federal Highway Administration (FHWA) are proposing to reconstruct the Interstate 10 / Ina Road traffic interchange and make improvements to Ina Road between Silverbell Road and Camino de la Cruz. The project will enhance safety by eliminating the existing at grade crossing of Ina Road and the Union Pacific Railroad (UPRR) and building an overpass taking Ina Road over I-10. I-10 will be lowered as part of the new Ina Road overpass construction. The project will also construct two structures over the Santa Cruz River. The eastbound and westbound frontage roads will be elevated to intersect with the new vertical alignment of Ina Road. The Loop Trail would be closed at Ina Road for extended periods during the project construction period.

Civil RightsTitle VI of the Civil Rights Act of 1964, and the Americans with Disabilities Act (ADA)