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Loop 303 project
08/07/2026

Big freeway construction project is in its early stages south of I-10 in Goodyear

The opening of a well-known travel center featuring a beaver mascot in Goodyear made a lot more news this summer than the start of ADOT’s latest freeway construction project, also in that West Valley city. The project to extend Loop 303...
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Close-up view of textured grooves on a concrete road surface, with blurred vehicles and highway scenery in the background under a partly cloudy sky.
08/05/2026

What is diamond grinding?

You may have heard that diamond grinding is currently being used on the SR 51, I-10 to Shea Blvd pavement project and the pavement improvement projects on the Loop 101 Agua Fria and Pima freeways. But what does that actually mean? Diamond...
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AAH volunteer group
08/05/2026

Route 66 Centennial cleanup

Join us for a special cleanup along a stretch of Arizona’s legendary Route 66 also known as the Mother Road, Main Street of America and the Will Rogers Highway.
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Popular blog articles

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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Mule Pass Tunnel
07/23/2020

Throwback Thursday: Hollywood magic at Mule Pass Tunnel

Did you know that Mule Pass Tunnel near Bisbee had a cameo in a major Hollywood motion picture? It's true, and let us tell you about it.
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Indian Gardens historical marker
07/22/2020

Stop to smell the roses and read this SR 89A historic marker

It isn't exactly news that history abounds along Arizona highways. A casual driver can learn about historical figures ranging from Hi Jolly to Tom Mix by visiting various historical markers and monuments. But what might be news to you, as...
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