This is a big step forward for a $120 million project creating a modern traffic interchange in a busy area northwest of Tucson.

Messages on ADOT electronic message boards may be fun but they're always focused on safety.

Time to challenge yourself with this week's "Where in AZ??" Join us on Facebook and let us know where this photo was taken.

The Art of Transportation takes you above I-10 for a one-of-a-kind view of freeway ramp construction.

Grand Canyon State Logo Signs are cost effective tool for local businesses to gain exposure along busy highways.

Work dismantling portions of I-10 ahead of building a new Ina Road interchange have begun.

A Throwback Friday photo shows how much progress we've made in 50 years at the Bell and Grand interchange.

Did your safety slogan make it to the next round? Find out and vote for your favorites through March 15.

How well do you know Arizona? Join our Facebook challenge and tell us "Where in AZ??" this photo was taken.

Survey says...expansion and preservation are important Arizona transportation priorities. Find out what else we found out from a recent online survey.

A popular app is helping truckers on both sides of the U.S.-Mexico border as well as ADOT inspectors.

Spring usually brings out motorcyclists and bicyclists, making this a good time for safety reminders.

Fading photos from ADOT's archive show how the Arizona Highway Department built and maintained roadways not long after statehood.

We don’t need an Academy or selfie-taking accountants to tell us who has the best safety message.

New message reminds drivers of an Arizona practice and safety.

Join us for our latest "Where in AZ??" challenge on Facebook!

A slideshow allows you to review photos from work on our Ina Road/Interstate 10 project from this part of the work going on in Marana.

Find out how ADOT installs a new bridge in just 96 hours.

MVD implements strategies to improve customer experience and reduce overtime costs.

While it will won't be until late 2019 before South Mountain Freeway opens, a new video allows you to visualize the drive today.