A glimpse of I-17 under construction in 1974.

A truck having to use a runaway truck ramp is a frightening thing to see. But truck ramps are very effective at stopping trucks that have lost use of their brakes.

Driving in hot Arizona temps? We have some tips for you.

It's Heat Awareness Week and we have a few suggestions for Adopt a Highway volunteers -- and, really, anyone planning to be outside during summer -- to consider before heading out to collect litter,

We understand that sometimes the going on Interstate 40 can get rough. But, setting aside the rest of that old adage, ADOT continues to invest in the 360-mile northern Arizona corridor. Last week, maintenance crews began smoothing out some...

Known as Arizona's longest open-spandrel bridge, the Cienega Creek Bridge ws constructed in 1921.

Let's go back 52 years to a familiar scene.

Recently, we had a chance to commemorate “Secure Your Load Day,” with some of ADOT’s fellow safety partners who are all committed to excellent, long-term collaboration to keep our roads safe.

Take it from a kangaroo who knows: Pool it!

Are you #AheadOfTheCurve? Let’s find out!

Summer means our monsoon season has arrived. According to the National Weather Service, Arizona’s summer monsoon season starts mid-June and lasts through the end of September. We can anticipate storms that bring lightning, rain and walls of dust. Driving through a dust storm can be dangerous and ill-advised, no matter where you are.

Burn scars can pose a problem during monsoon season.

We’re thankful for our Enforcement and Compliance Division officers making key traffic stops in addition to their primary duties of enforcing commercial vehicle regulations to help keep motorists safe.

Sometimes the work we do, such as setting girders for a new bridge, requires fully closing the highway to keep everyone safe. This 150-long girder weighs more than 70 tons. It was recently set over I-10 near 48th Street.

June 21 is the official first day of summer and with that brings an added layer of safety for Adopt a Highway volunteers to consider.

This monsoon season marks the third year ADOT is working to make the drive safer with our dust detection and warning system spanning 10 miles of the highway that’s most prone to wind-blown dust.

A much-needed project on southbound I-17 south of Flagstaff will repair years of damage from winter weather.

Shreds of tire treads have gained the nickname “gators” because many of them look like an alligator's back floating on the water’s surface. During National Tire Safety Awareness Week, we have tips for staying gator-free.

Hey, ADOT Kids! There is a birthday coming up on July 1! Do you want to guess who will be celebrating? It’s ADOT’s 48th birthday! On July 1, 1974, the Arizona Highway Department officially became the Arizona Department of Transportation...

Celebrate ADOT's birthday with a trip through the years, recounting the agency’s history through our instantly-recognizable logos.