Residents are advised to expect construction-related noise from around-the-clock jackhammering as crews begin excavation work April 1.
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FLAGSTAFF — The Arizona Department of Transportation, Federal Highway Administration and the city of Flagstaff are beginning a project to widen the Fourth Street bridges over Interstate 40 in Flagstaff. The project will provide additional capacity for vehicles, bicycles and pedestrians.
Work will occur in three construction time windows with the primary traffic restrictions occurring between April 1, and Oct. 1.
In preparation of the work starting, one lane will be closed in each direction on I-40 under the Fourth Street bridges from 5 a.m. Saturday, March 28 to 5 p.m. Sunday, March 29. The weekend traffic restrictions are needed to pave the shoulders, which will be used by motorists during construction.
The demolition and removal of the existing Fourth Street bridges and construction of the new bridges will require numerous traffic restrictions. Emergency vehicle, bicycle and pedestrian access will remain open during the following restrictions and closures:
- Fourth Street will be narrowed to one lane at I-40 during overnight hours with flaggers directing traffic through the work zone from April 1 to Oct. 1.
- Fourth Street will be CLOSED at I-40 around-the-clock in mid-July for 17 consecutive days.
- Two weekend FULL CLOSURES of Fourth Street at I-40 are also scheduled for mid-summer.
- Single-lane closures in one direction at a time on I-40 during nights and weekends.
For more information, please visit the project page.
Schedules are subject to change based on weather and other unforeseen factors. For more information, please call the ADOT Bilingual Project Information Line at 855.712.8530 or go to azdot.gov/contact and select Projects from the drop-down menu. 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.