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Quarterly volunteer adoptions background
03/07/2026

Meet the volunteers beautifying Arizona roadsides

These are just a few examples of the efforts made by our growing team of volunteers. See who's volunteering in your community and the accomplishments already being made to reduce litter.
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Website poster for ways to tour Route 66
03/06/2026

Route 66 centennial: Ways you can join a year of celebration

While Route 66 was officially decommissioned in the 1980s and replaced in Arizona by I-40, its centennial is a big deal for those of us in the highway business. In this post, we're pointing you to some of the ways Arizona cities and towns are celebrating:
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Map of Loop 303 project in North Valley
03/01/2026

PODCAST: Big Loop 303 improvements underway in the North Valley

Joe Heller, our resident engineer on a big project getting underway in the North Valley, joins On the Road With ADOT this week to explain what's coming over the next two and a half years, including a flyover ramp connecting northbound I-17 with Loop 303.
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Popular blog articles

Black and white photo of rocky hill
08/06/2020

Throwback Thursday: The rocky road to Prescott

Going uphill has always been part of driving north in Arizona. And that means steep hills and occasionally rocks, like in this photo from the 1930s.
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08/05/2020

Everything now in place for the Fourth Street bridge project

Our project on the Fourth Street bridge over Interstate 40 is one of those times when things just seem to slide into place.
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Old and new Pinto Creek Bridges
08/04/2020

Catching up on our US 60 at Pinto Creek project

See for yourself how things are progressing on US 60 at Pinto Creek.
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08/03/2020

Why are US 93 mileposts in backward order?

US 93 has a surprising quirk: Its milepost numbers get higher as you head south. Why the highway is like that is a tricky question to answer.
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A man guides a team of six mules pulling a plow across a sandy field, with another team and workers visible in the background under a bright sky.
07/31/2020

Flashback Friday: Mule crews

Here's a photo that reminds us why we are happy working in these mechanized times.
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Large equipment being used to construct overpass
07/30/2020

Throwback Thursday: A balanced approach

More than 20 years ago, ADOT did a careful balancing act of widening State Route 87.
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07/29/2020

Turning back the pages on Carefree Highway's top 10 hit

Did you know there's a connection between an Arizona highway and Canadian folk singer Gordon Lightfoot?
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Photo of pedestrian hybrid beacon and cars
07/28/2020

ADOT's pedestrian hybrid beacon study wins national award

An ADOT study on traffic control devices to help pedestrians cross a street or highway has received a national award.
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Map showing mileposts in the Gila Bend area
07/27/2020

Why mileposts on State Route 85 are both coming and going

State Route can't seem to decide whether its coming or going. We dive into while the route from Phoenix to Lukeville is numbered in two contrary ways.
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An excavator demolishes the top of a concrete bridge.
07/24/2020

Creative destruction in process on I-17 at Central Avenue

See the demolition that will lead to a better bridge on I-17 over Central Avenue.
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