Source: Arizona Department of Transportation
The Arizona Department of Transportation is moving toward the next phase of creating a modern Ina Road interchange with Interstate 10 in the town of Marana northwest of Tucson.
The project, with a total construction cost of $148M, will relieve traffic congestion by widening I-10 and by carrying a widened Ina Road over Union Pacific tracks that carry between 40 and 60 trains a day.
Ina Road will close at I-10 on Feb. 15 and remain closed for more than two years. Access to businesses will be maintained throughout.
The project is funded by the Regional Transportation Authority, managed by the Pima Association of Governments. In addition, the Town of Marana is providing $25M for work that will widen Ina Road and reconstruct Ina Road bridges over the Santa Cruz River west of I-10.
ADOT is managing the project.
Preliminary construction began last summer with utility work, improvements to frontage roads and construction of a ramp from Ina Road to the westbound frontage road. Ina Road has remained open at I-10 but has been restricted to a single lane in each direction.
In addition to an Ina Road overpass that will be approximately 25 feet above ground level, other major improvements include:
- Widening I-10 to eventually accommodate four lanes of traffic in each direction
- Expanding Ina Road to two lanes in each direction
- Reconstructing and updating frontage roads and entrance and exit ramps to meet the new profile of Ina Road.
- Landscaping along the project area that will draw inspiration from the Sonoran Desert
The project includes reconstructing the Ina Road bridges over the Santa Cruz River. This work will close the Pima County Loop Trail, south of Ina Road at Ted Walker Road and north of Ina Road at the Crossroads at Silverbell District Park, for approximately two years beginning in mid-January. When the trail reopens, there will be underpasses on each side of the Santa Cruz River, new access ramps to Ina Road and new bike lanes and sidewalks along Ina Road.