UNDERPASS AT THE UNION PACIFIC RAILROAD PROJECT TO REOPEN TO TRAVEL
Beginning at 4 a.m. on Saturday, August 1, 2026, Grant Road, between the I-10 westbound Frontage Road and Flowing Wells Road, will reopen to for travel following major improvements associated with the Grant Road Underpass at the Union Pacific Railroad Project.
Although Grant Road will reopen, crews with KE&G will remain in the area through the end of August completing minor work. Roadway construction work unrelated to the Grant Road Underpass at the Union Pacific Railroad project will continue in the area as part of the Pascua Yaqui Tribe's Casino Del Sol, Vahi Taaʼam.
Grant Road at the Union Pacific Railroad has been fully closed since May 22, 2026, allowing crews with KE&G Construction, under contract with the City of Tucson Department of Transportation and Mobility (DTM), to expand the roadway to six total lanes of travel, update traffic signals and crosswalks, extend sidewalks, and upgrade ADA access and stormwater drainage. A mural is also planned for the area east of the existing railroad bridge in December.
This voter-approved Regional Transportation Authority (RTA) project aims to reduce traffic congestion on Grant Road between Fairview Avenue and the eastbound I-10 frontage road and highlights the continued collaboration with the Arizona Department of Transportation (ADOT), the Union Pacific Railroad, City of Tucson, and KE&G.
We ask the community to please to use caution when approaching a work zone; reduce your speed, watch for roadwork signs and crews working, leave extra space between you and the vehicle ahead, and avoid distractions.
More information about the Grant Road Underpass at the Union Pacific Railroad project, visit: https://dtmprojects.tucsonaz.gov/pages/grantuprr
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