Updated: Northbound Loop 303 closed at times this weekend in northwest Valley; expect delays, use detours

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Northbound Loop 303 closed at times this weekend in northwest Valley; expect delays, use detours

Updated to correct direction in second bulleted item.

Northwest Valley drivers should plan for closures of northbound Loop 303 (Bob Stump Memorial Highway) beginning Friday night, Feb. 7, as work continues on a technology improvement project. The Arizona Department of Transportation advises drivers to expect delays and use detours while the following closures are in place as crews install traffic flow sensors:

  • Northbound Loop 303 will be closed between El Mirage Road and Happy Valley Parkway from 10 p.m. Friday to noon Saturday, Feb. 8, for installation of traffic flow sensors. Detour: Traffic can exit to southbound El Mirage Road, travel to eastbound Bell Road, then go northbound on 99th Avenue/Lake Pleasant Parkway to reach Loop 303 beyond the closure.
  • Northbound Loop 303 will be closed between Happy Valley and Lone Mountain parkways from 10 p.m. Saturday to noon Sunday, Feb. 9, for installation of traffic-flow sensors. Detour: Traffic can exit to westbound eastbound Happy Valley Parkway and use northbound Lake Pleasant Parkway to reach Loop 303 beyond the closure.
  • The southbound Loop 303 on-ramp at El Mirage Road will be closed overnight from 9 p.m. Sunday to 5 a.m. Monday, Feb. 10. Detour: Alternate routes include using southbound El Mirage Road to westbound Bell Road to access southbound Loop 303.

Learn more about technology improvements that will enhance traffic flow and safety on Loop 303 on the project webpage.