Travelers in and around Tucson can expect big changes on the region’s freeways in 2026 as the Arizona Department of Transportation finishes a major I-10 widening project, continues work on a multi-year I-10 reconstruction southeast of downtown, and launches a complete rebuild of the I-19/Irvington Road interchange.
On the northwest side of Tucson, ADOT is moving into the final months of a $171 million project that reconstructed and widened four miles of I-10 between Ina and Ruthrauff roads. Traffic is already using the rebuilt lanes, and ADOT says the last major milestone — opening the reconstructed Sunset Road interchange — is scheduled for spring 2026. The new interchange will include an I-10 connection east to River Road via new bridges funded by Pima County that will cross the railroad tracks and the Rillito River.
Southeast of downtown, construction continues on a separate, much larger I-10 project between Kino Parkway and Country Club Road. The $600 million program will expand I-10 from two to three lanes each way (with an additional auxiliary lane between ramps), reconstruct the Kino Parkway interchange, remove the existing Palo Verde and Irvington interchanges, and build a new Country Club Road interchange to improve safety and traffic movements. The project also includes an I-10 undercrossing to connect the North and South Kino Sports Complexes. Work began in mid-2025 and is expected to run through 2028; one completed element already open to drivers is a new westbound on-ramp at Alvernon Way…