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ADOT representatives accept award
11/11/2026

ADOT shines for supporting dark skies

ADOT’s efforts to brighten Flagstaff's night sky has earned stellar recognition. The Flagstaff Dark Skies Coalition recently presented ADOT and the Arizona State Transportation Board with the Dark Sky Champion Award. As seen pictured below...
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AAH SR 87 Starlighters Sept 11 cleanup
11/10/2026

Honoring the commitment: Veterans and volunteers

Thank you, military veterans and supporters, for making the commitment to serve our country and for going above and beyond to preserve the beauty of Arizona.
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Black and white photo of Route 66 roadway with shops on either side and cars parked on the road.
11/09/2026

Route 66 celebrates 100 years of travel

Start your engines, put the Nat King Cole Trio on the radio, and get ready to celebrate the centennial of Route 66!
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03/20/2014

The Science of Transportation: Sieve Analysis

You might think that highway construction is all about big machinery, heavy-duty vehicles, massive structures and materials by the ton – but it’s not.
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03/13/2014

Look at the progress: Loop 303/I-10 traffic interchange

Check out the progress on the Loop 303/I-10 traffic interchange project.
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03/12/2014

Much effort needed to move I-11 from concept to reality

ADOT Director John Halikowski discusses I-11, along with the effort and cooperation needed to move forward.
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03/11/2014

Tentative Five-Year Construction Program ready for public comment

ADOT is asking for your thoughts regarding the 2015-2019 tentative five-year program.
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03/07/2014

A new milestone for Loop 303 project

West Valley drivers are going to notice a change at Loop 303/McDowell Road and Loop 303/Thomas Road come Sunday morning.
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Poster promoting public input for Arizonas Tucson-Phoenix rail study, with train images and comment deadline.
03/06/2014

Get your opinion heard, public comment period begins this week for ADOT's passenger rail study

As ADOT continues to study the feasibility of a passenger rail line between Phoenix and Tucson, the agency is looking to the public to provide input on the three alternatives that have been selected for further study.
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Black-and-white map showing Arizona’s state highway system, including Route 66 and Route 89, labeled by county.
03/05/2014

Numbering Arizona's highways

"Arizona's Transportation History" provides us with a look at how and why our state's highways were numbered.
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02/28/2014

I-17 climbing lane project moves to next phase

One of the most visible projects on Interstate 17 is moving onto the final phase of construction.
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Cars driving on a highway next to an overpass under construction, with a stadium in the background.
02/27/2014

Progress can be seen on Loop 101 ramps in Glendale

The future Loop 101 HOV-lane ramps at the Maryland Avenue Bridge have truly taken shape near the Westgate City Center, Jobing.com Arena and University of Phoenix Stadium.
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National Transportation Week Display from 1980
02/26/2014

From the ADOT Archives: Communicating with the Public

Back in May of 1980, ADOT marked National Transportation Week with this outstanding exhibit that was displayed inside Phoenix's Central Library.
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