Traffic Alert: Plan for ramp closure at Interstate 17 and Interstate 40 beginning in April

Full closure of northbound Interstate 17 to westbound Interstate 40 ramp through December

Drivers in the Flagstaff area who want to access westbound Interstate 40 from northbound Interstate 17 are advised to allow extra travel time as the interchange ramp will be closed from Monday, April 9 through December 2018. The detour route takes northbound I-17 drivers to eastbound 40 to exit at Butler Road and then access westbound Interstate 40.

This ramp closure is necessary for crews to begin bridge deck replacement and repair work at the I-17 and I-40 interchange in Flagstaff. This project will replace three bridge decks and approach slabs, increase the bridge cross slopes and retrofit one bridge deck with an overlay. The project will also include guardrail and paving work.

Construction began in February 2018 and the majority of the work is scheduled to be complete by the end of the year.

What to Expect:

Construction seven days a week with both day and night work, according to project phasing

Overnight, one-direction closures on Beulah Boulevard beneath I-40

Rolling night closures of I-17, according to phasing

Ramp closures

The southbound I-17 to eastbound I-40 ramp is scheduled to be closed in two-week increments at the end of June, end of July and end of October

Schedules are subject to change based on weather and other unforeseen factors. For more project information, please visit For questions or comments, please contact Mackenzie Kirby, ADOT North central District Community Relations Project Manager at 928-525-6494 or For more information, please call the ADOT Project Information Line at 855.712.8530 or email For real-time highway conditions statewide, visit ADOT's Traveler Information Site at, follow ADOT on Twitter (@ArizonaDOT) or call 511, except when driving.


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