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On the Road With ADOT logo
07/05/2026

PODCAST: I-10 widening project keeps advancing south of the Valley

In this episode of On the Road With ADOT, Marcy McMacken, our lead communicator on the project, talks with guest host Laura Douglas about what drivers will see as we continue creating a wider Interstate 10 between the Valley and Casa Grande.
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A digital message board on the highway encourages motorists to drive sober.
07/02/2026

Sparklers, not drivers, should be lit over July 4 weekend

Independence Day is just around the corner, and we want to take a moment and remind Arizonans that sparklers, not drivers, should be “lit” during the holiday celebrations. If you’re driving on state highways this holiday weekend, you may...
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4 years of MVD Community Connections
07/01/2026

MVD Community Connections enters year 5 of giving back

The Arizona Department of Transportation Motor Vehicle Division charitable team known as MVD Community Connections began the fifth year of giving back to Arizona communities.
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A white semi-truck drives under a concrete overpass under construction, with cranes and unfinished sections visible; blue sky with scattered clouds above.
05/15/2019

Infrastructure Week: Keeping traffic flowing is a straddle bent's job

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.
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Construction workers and machinery lay concrete barriers on a multi-lane highway with traffic signs and equipment visible along the road.
05/14/2019

Infrastructure Week: Consider the Jersey barrier

Here's a look at the simple engineering behind the ubiquitous work zone concrete barrier.
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05/13/2019

40th Street improvements begin immediately for South Mountain Freeway

South Mountain Freeway crews are wasting no time moving onto the final phase of construction for the 40th Street traffic interchange in Ahwatukee.
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Queen Creek Tunnel
05/13/2019

Infrastructure Week: Let us count the ways

What does infrastructure mean when it comes to Arizona's highway system? Here are some numbers.
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State Route 67 with snow off to the sides
05/10/2019

Highway History: State Route 67

State Route 67, also known as the Jacob Lake to Grand Canyon Highway, is one of Arizona's most scenic summer drives.
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Black Canyon Highway ribbon cutting
05/09/2019

Throwback Thursday: How I-17 came to be

Interstate 17, the Black Canyon Highway, was dedicated 55 years ago. Here's the story behind this important north-south link.
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Loaded timber truck is moving across a highway
05/08/2019

ADOT, partners helping reduce risk of catastrophic wildfires

Five years ago, ADOT helped launch the Health Forest Initiative to help prevent large wildfires and protect infrastructure. Now we're expanding that effort.
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05/07/2019

Retiring ADOT engineer leaves big legacy of 'little things'

Beyond his work as a civil engineer with ADOT's operation serving northeastern Arizona, Kee Yazzie was a key contact with Native American communities.
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05/06/2019

Counting down to the final tasks at I-10 and Ina Road

Check out a slideshow and get an update on our progress finishing the final touches on a project that's improving mobility and safety in fast-growing Marana.
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Students watch ADOT workers test materials on a table.
05/04/2019

Students get hands-on look at science behind highways

A visit to the ADOT Materials Lab in Phoenix demonstrated how what taught in science, technology, engineering and mathematics helps those who build and maintain state highways.
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