Phoenix Metro Area Projects

Loop 303 Improvement Project: North of Interstate 10

Traffic Alerts

Delays are expected on Loop 303 and US 60 (Grand Avenue) in the northwest Valley until construction ends in summer 2016. Please allow extra travel time and consider alternate routes.

Upcoming Restrictions/Closures
  • Loop 303 in both directions, between Happy Valley and US 60 (Grand Avenue), may be narrowed to one lane, and multiple flaggers may be present to direct traffic through summer 2015.
  • US 60 (Grand Avenue) near Loop 303 may be narrowed to one lane in both directions, and multiple flaggers may be present to direct traffic through summer 2015.