South Mountain Freeway crews are wasting no time moving onto the final phase of construction for the 40th Street traffic interchange in Ahwatukee.

Here's a look at the simple engineering behind the ubiquitous work zone concrete barrier.

When a pier needed to support a ramp would otherwise need to be in the middle of travel lanes below, ADOT engineers call on this support structure that straddles traffic.

The entries are reminders that the best way to make roads safer is changing our own driving habits and encouraging those around us to change theirs.

ADOT Director John Halikowski explains why everyone needs to realize the importance of infrastructure and protect its value by making investments for the future.

As summer starts again, its now warm enough for work on several road improvement projects in northern Arizona.

This summer we are rolling out new highway signs to both promote the 511 phone line, attract business sponsorship and generate funds to maintain roads.

Our ArizonaDOT Spotify playlist of transportation-related songs has continued growing over the past year. We hope you'll check it out.

A celebration this week in 1915 included a parade of decorated automobiles, a concert and horse races.

Piers and bridge abutments for the new interchanges at Pinnacle Peak and Happy Valley roads are currently going up, so take a look at some of the work happening right now.

We may not have solved this mystery, but we have a pretty good guess as to why numbers on mile markers jump suddenly between Bylas and Safford.

More than 60 years ago, Frances Walker became the first female engineer with the Arizona Highway Department. Here is what highway engineering looked like back then.

Early in the morning on Sunday, May 19, ADOT Maintenance Supervisor Brett Rupp was driving west on SR 260 along the Mogollon Rim east of Payson when he spotted something out of the ordinary. A Shetland sheepdog, more commonly referred to as...

Water conservation is something all of us should practice. Here is what ADOT is doing to use less water.

What became of a plaque installed to commemorate the 1922 opening of a highway that's no longer in use?

Mary Currie decided early on that it was important to walk the walk, so she organized employees in her part of ADOT to adopt a mile of US 60 northwest of the Valley.

We handle all sorts of questions on social media, but there's one subject where you should call 911 instead of @ us.

Following up on Arizona Secure Your Load Day, a driver's jaw-dropping experience at an intersection prompts a reminder that a little common sense can help keep everyone safer.

Adopting a highway can be a great way to honor a special person while also beautifying our state.

It's almost monsoon season, which also means dust storms. Our director shares his thoughts about safe driving during this time of year.