The Arizona Department of Transportation is continuing improvements to Loop 303. Several projects, stretching from I-10 to Happy Valley Parkway will help improve traffic conditions. During construction, closures and restrictions may occur. Drivers are reminded to slowdown and be alert when traveling in the work zones. DPS officers will periodically patrol the area to enforce the reduced speed limit.
Loop 303 south: Interstate 10 to Van Buren Street
Construction of Loop 303 south, between I-10 and Van Buren Street is anticipated to start in fall 2015 and conclude in late 2017.
Loop 303 / US 60 (Grand Avenue) Traffic Interchange
Construction on the interchange connection will be complete sometime in summer 2016. As part of this project, a new bridge will be constructed on the south side of the existing Loop 303 bridge (serving as the new eastbound travel lanes), sound walls will be constructed north of Mountain View Boulevard along the Loop 303 corridor, and the roadway will receive a layer of rubberized asphalt paving.
Loop 303/US 60 (Grand Avenue) Traffic Interchange Presentation
Loop 303 / El Mirage Traffic Interchange
Construction is underway and is anticipated to be complete in summer 2016.
Loop 303: Happy Valley Parkway to El Mirage Road
Construction is currently underway to widen Loop 303 to three lanes in each direction with a rubberized asphalt paved surface. It is anticipated that this section of roadwork will be complete in summer 2015.