ADOT Blog

Latest blog articles

A concrete bridge with large support beams spans a deep red rock canyon under a cloudy sky.

02/10/2026

Waterhole Canyon Bridge is out-of-this-world

An odd-looking bridge in Northern Arizona is a gateway to some of Arizona's most spectacular scenery.

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02/09/2026

All the Way to the Border cleanup sees 100 volunteers

Hospitality and community support fuel Melissa Owen's 11th annual cleanup to reduce trash along State Route 286.

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02/06/2026

PODCAST: Loop 101 Pima improvements complete; pavement upgrade coming

Joe Heller, ADOT's resident engineer in charge of the recently completed Loop 101 (Pima Freeway) project, visits On the Road With ADOT to discuss this $108 million improvement and a coming project there to use diamond grinding to provide a smooth, durable driving surface.

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From the Director: 45 years and counting

Since 1974, ADOT has combined functions once handled by the Arizona Highway Department, the motor vehicle services agency and the Arizona Aeronautics Department.

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Installation of Arizona Department of Transportation building sign

07/01/2019

Becoming ADOT 45 years ago today broadened our focus beyond highways

The big reorganization brought with it many new responsibilities for the department, including the addition of several new divisions.On July 1, 1974, the Arizona Highway Department officially became the Arizona Department of Transportation...

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06/30/2019

Where in AZ??

A holiday is coming up, but we have last "Where in AZ??" before you go on vacation this week!

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A black pickup truck drives down a two-lane road entering a yellow and blue-painted underpass with a clearance sign of 14 ft 6 in.

06/28/2019

Flashback Friday: Party planning for the Winslow Underpass dedication

Listing who received invitations and even how officials would obtain lumber to build a speaker stand made for page-one news back in 1936.

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Historic photo from opening of bridge crossing Marble Canyon

06/27/2019

Throwback Thursday: 90 years and a bottle of ginger ale

It was 90 years ago that Arizona dedicated Navajo Bridge spanning the Colorado River at Marble Canyon.

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06/26/2019

Training helps Grand Canyon airport fire crews prepare for anything

The firefighters at Grand Canyon National Park Airport train hard to make sure they are ready for any emergency.

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06/25/2019

Adopt a Highway: Inspiration led to 20 years of keeping Chinle area clean

We love our longtime Adopt a Highway volunteers and hope others will find inspiration in what motivates them, like this group from the Chinle Navajo Land Department.

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