The Arizona Department of Transportation reports that Ina Road has opened over Interstate 10 in Marana, a major step toward completing a modern traffic interchange that is one of the Tucson area’s largest road projects in years.
Traffic began taking Ina Road over I-10 and the Union Pacific Railroad tracks. While work continues in other areas of the project, one lane of Ina Road will be available in each direction and the speed limit will be 25 mph.
Ramps connecting Ina Road with I-10 are expected to open in the next few weeks. The final pieces of the project – widening Ina Road from I-10 west to the Santa Cruz River and connecting with a new bridge over the river – will be completed later this spring. Ina Road is open throughout that area of the project.
Before this $128 million project, Ina Road offered just two lanes under I-10, and drivers regularly had to wait for trains to pass. The new overpass will offer four lanes while eliminating the need to wait for trains, enhancing mobility and safety.
Improvements also include replacing a single two-lane Ina Road bridge over the Santa Cruz River with two bridges, doubling the road’s capacity west of I-10, and creating a bicycle path that connects with The Loop, a system of trails and bike routes in the Tucson area. Meanwhile, new technology will monitor traffic and allow ADOT engineers to adjust signal timing based on need.
Ina Road is the third major I-10 interchange replacement in Pima County. Projects at Prince Road and Twin Peaks have created overpasses that eliminated the need for drivers to wait for trains. A similar project at Ruthrauff Road is expected to begin this summer.
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