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Construction occurs on a highway.
09/17/2025

Bridge girder placement another sign of progress on US 93 widening project

Two bridges under construction on US 93 north of Wikieup didn’t look much like bridges until recently, as they were little more than concrete piers jutting up from a dry wash. That all changed rapidly in the past few weeks, as crews lifted...
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A digital message board on the highway encourages motorists to drive with care
09/16/2025

ADOT’s Safety Message Contest returns for the ninth year

It’s back! I’m excited to announce that ADOT’s Safety Message Contest is now open and accepting submissions. Arizonans can submit their engaging traffic safety messages through Sept. 22 at azdot.gov/SignContest. This contest, now in its...
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Navajo Bridge viewed from the Colorado River
09/14/2025

PODCAST: We're looking back 30 years to the dedication of (new) Navajo Bridge

This week's guest and host on ADOT's podcast were at the Sept. 14, 1995, dedication of a new Navajo Bridge spanning Marble Canyon on US 89A. Thirty years later, they share their memories.
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Popular blog articles

09/29/2015

ADOT nationally recognized for environmental leadership

ADOT has received a new accolade for its leadership in developing wildlife crossing structures in Arizona.
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09/25/2015

ADOT YouTube channel nears milestone

We’re about to hit a big milestone over on the ADOT YouTube channel!
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09/24/2015

Work continues on Hell Canyon Bridge replacement

We have an update for you on the Hell Canyon Bridge replacement project that isn’t infernal at all!
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09/23/2015

Your top vehicle registration questions (and the answers)

Vehicle registration is a topic that matters to just about every vehicle-owner in this state. Today, we're sharing some frequently asked questions on the subject (along with the answers!).
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09/16/2015

I-17/SR 89A intersection improvements wrap up near Flagstaff

It’s been a while since we last checked in up north on the I-17/JW Powell traffic interchange improvement project.
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09/15/2015

Why we build roundabouts

Learn about the benefits that modern roundabouts offer traffic planners and engineers.
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09/10/2015

Transportation Defined: Rustication

Rustication and graphic elements are used to help create visual interest and a sense of place.
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09/09/2015

From the Rearview Mirror: Loop 303

Originally published one year ago, this blog post highlights a very big milestone.
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Passenger-Rail-Study-Tier1-cover
09/03/2015

Give us your feedback on the Passenger Rail Corridor Study

ADOT, in partnership with the Federal Railroad Admin., has released the Draft Tier 1 Environmental Impact Statement for Passenger Rail Corridor Study.
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09/02/2015

History is re-created in Tombstone as part of ADOT project on SR 80

Improvements to SR 80 through Tombstone include the replacement of water-damaged adobe at the base of Schieffelin Hall, one of the most significant historic buildings in “The Town Too Tough to Die.”
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