Traffic Alerts - Loop 303: Technology Improvement Project

Please slow down and use caution around construction personnel and equipment.

  • The northbound Loop 303 will be closed between Bell Road and the US 60 (Grand Avenue) from 10 p.m. Friday, Jan. 24, to noon Saturday, Jan. 25.
    • Detour: Use northbound Reems Road to northwest Grand Avenue to access northbound Loop 303.
  • The southbound Loop 303 will be closed between the US 60 (Grand Avenue) and Bell Road from 10 p.m. on Saturday, Jan. 25, to noon Sunday, Jan. 26.
    • Detour: Use southeast US 60 (Grand Avenue) to westbound Bell Road to access southbound Loop 303.

Upcoming Closures

The following closures are scheduled to occur between Friday, Jan. 31, and Monday, Feb. 3:  

  • Southbound Loop 303 is scheduled to be closed between Lake Pleasant Parkway and Lone Mountain Parkway from 10 p.m. Friday, Jan. 31, to noon Saturday, Feb. 1.
    • Detour: Alternate routes include exiting southbound Loop 303 to southbound Lake Pleasant Parkway to westbound Happy Valley Parkway. 
  • Southbound Loop 303 is scheduled to be closed between Lake Pleasant and Happy Valley parkways from 10 p.m. on Saturday, Feb. 1, to noon Sunday, Feb. 2, and the southbound Lone Mountain Parkway on-ramp will be closed at the same time.
    • Detour: Drivers can exit southbound Loop 303 to southbound Lake Pleasant Parkway to westbound Happy Valley Parkway. 
  • The Northbound Loop 303 on-ramp at Lake Pleasant Parkway is scheduled to be closed from 9 p.m. Sunday, Feb. 2, to 5 a.m. Monday, Feb. 3.
    • Detour: Drivers can use eastbound Happy Valley Parkway or State Route 74 to travel east to access Interstate 17.

The following closures are scheduled to occur between Friday, Feb. 7, and Monday, Feb. 10:  

  • Northbound Loop 303 is scheduled to be closed between El Mirage Road and Happy Valley Parkway from 10 p.m. Friday, Feb. 7, to noon Saturday, Feb. 8, for installation of traffic-flow sensors.
    • Detour: Alternate routes include exiting northbound Loop 303 to eastbound Bell Road and using northbound 99th Avenue to westbound Happy Valley Parkway.
  • Northbound Loop 303 is scheduled to be closed between Happy Valley and Lone Mountain parkways from 10 p.m. on Saturday, Feb. 8, to noon Sunday, Feb. 9, for installation of traffic-flow sensors.
    • Detour: Consider using eastbound Happy Valley Parkway to northbound Lake Pleasant Parkway to reconnect with Loop 303.
  • The Southbound Loop 303 on-ramp at El Mirage Road is scheduled to be closed from 9 p.m. Sunday, Feb. 9, 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.  

Stay Informed

Schedules are subject to change based on weather and other unforeseen factors.  Subscribe to receive project updates and traffic alerts by email. For more information, please call the ADOT Bilingual Project Information Line at 855.712.8530 or submit a question or comment by email.  For real-time highway conditions statewide, visit ADOT’s Traveler Information Site at www.az511.gov, follow ADOT on Twitter (@ArizonaDOT) or call 511, except while driving.