ADOT project is upgrading I-40/I-17 interchange in Flagstaff

Freeways, ramps, local road will have restrictions during improvements

PHOENIX – The Interstate 40/Interstate 17 interchange that for many is the gateway to Flagstaff is getting a $10 million update.

The Arizona Department of Transportation is starting a project that includes replacing the I-40 bridge decks in each direction over Beulah Boulevard, immediately west of I-17, as well as the westbound bridge deck over I-17. The eastbound I-40 bridge over I-17 will get a new concrete surface.

“This work is needed to keep the I-40 bridges in top shape for commercial traffic and passenger vehicles using this key northern Arizona corridor,” said Audra Merrick, district engineer for ADOT’s North Central District.

Crews will spend the next several weeks doing preliminary work. Then construction will occur seven days a week during both day and night hours. Most of the work is expected to be completed by the end of the year.

Among the restrictions required for this work will be multiple overnight, one-direction closures of Beulah Boulevard as it passes under I-40. The I-17 northbound to I-40 westbound ramp will close from mid-April to December, and the I-17 southbound to I-40 eastbound ramp will close for a couple of weeks in mid-June. Other restrictions will be required as work progresses.

Once major work begins later this spring, those traveling to or through the Flagstaff area along I-40 will need to plan for extra travel time. Detour routes will be shared in advance of closures and clearly marked by signs.

The project will also increase the cross slope of the roadway over the renovated bridges, helping drain water off of the road surface. It also includes guardrail and paving work.

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