Take a look at signs that will grace state highways celebrating a park that draws millions each year from around the world.

For this Throwback Thursday, we look back to a 1973, when safety standards were a little different than they are today.

This week's challenge could be easy if you searched the Internet for the answer, but we know you'll play fair!

It's a common question - why isn't all construction done at night? There are actually a number of factors weighing into what work can be done at night and what needs to be done during daylight.

Take an interactive before-after look at a bridge demolition that's part of a project building a wider I-10 between Eloy and Picacho in central Arizona.

ADOT is updating the Strategic Highway Safety Plan with a renewed emphasis. You can read more about it.

Recently ADOT switched to using Google for our email services. While a big switch, it has nothing on two phone projects the agency took on in the late 70s and early 80s.

Work zones go hand-in-hand with freeways. We want everyone - including our crews - to get home safely, so here are a few tips on how to navigate construction zones.

A swirl of cloud and some mountains are the clues to help you located this week's "Where in AZ??" challenge.

Thanks to the work of our photographers, ADOT's Flickr page has more than 9,000 pictures of highway projects from the last six years, which have been viewed more than 6 million times.

An easy-to-use interactive map now available on our Adopt a Highway website shows which stretches are in need of volunteers.

We've launched a redesigned az511 website and phone line to better give individual drivers the information they need for the routes they drive.

We are throwing back to a reconstruction project in the 1970s of one of the state's lesser-used highways.

Crews are out putting up new signs celebrating 100 years of Grand Canyon National Park.

This creek may help you identify this week's "Where in AZ??" location.

The new az511 website may be overwhelming at first. Here are some tips.

ADOT has issued a Request For Proposals for a design concept report and environmental study of I-10 between Phoenix and Casa Grande.

The Meath Wash Bridge on State Route 89 south of Ash Fork is being replaced soon.

Our photography caught this moment of calm during the construction of the new State Route 87 and Interstate 10 interchange near Eloy.

A deck pour scheduled for late next week represents a major step toward completing an overpass spanning the railroad tracks in the heart of a growing city.