The Arizona Department of Transportation announced on May 5 that it is nearing completion on the Interstate 10 widening and reconstruction project between Ina and Ruthrauff roads in northwest Tucson, with all sections expected to open to traffic by mid-May.
The $171 million project aims to improve traffic flow and safety for drivers traveling through this busy corridor. The improvements are part of a broader plan managed by the Pima Association of Governments under the Regional Transportation Authority’s roadway improvement initiative.
Crews are finishing lane striping for a fourth lane in both directions on I-10, which will soon bring an end to overnight lane restrictions. Work continues on the new Sunset Road interchange and an extension connecting Sunset Road between I-10 and River Road. This $35 million segment, funded by Pima County, includes new bridges over the Union Pacific railroad tracks and Rillito River, creating additional connections for motorists. Final touches such as landscaping, painting the Sunset Road overpass, and installing traffic signals are underway.
Other features include reconstructing the Orange Grove Road interchange—opened in February 2025—with higher bridges for greater clearance; redesigned interchanges at Orange Grove and Sunset roads with more entrance and exit lanes; replacement of all nine bridges within the project area; construction of an access path from Sunset Road to Chuck Huckelberry Loop; as well as updates related to lighting, landscaping, drainage, and improved connectivity throughout this stretch.
Arizona Department of Transportation manages various facilities across Arizona—including rest areas, snowplow operations with specialized equipment, highway cameras for monitoring—and offers services such as traveler updates via AZ 511 system according to the official website. The department also works alongside regional partners on projects like corridor studies while supporting sites ranging from Grand Canyon National Airport to southern border ports.
Jennifer Toth serves as director overseeing planning, design, construction, maintenance and operation of state transportation systems according to the official website.
