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Joe Heller, our resident engineer on a big project getting underway in the North Valley, joins On the Road With ADOT this week to explain what's coming over the next two and a half years, including a flyover ramp connecting northbound I-17 with Loop 303.
A major component of the work will be building the direct ramps to create the freeway-to-freeway interchange. When completed over the next two-and-a-half years, drivers will skip the traffic signals at the current Loop 303/I-17 diamond interchange.
Engineers at ADOT play a vital role in building and maintaining Arizona’s roads. During National Engineers Week, Feb. 22-28, we’re celebrating engineers and the work they do to keep Arizona moving.

Popular blog articles

Interstate 40 and former US Route 66 can take you to some odd places across the state. Today's example is the lone gravesite of Hermann Wolfe.
It was 40 years ago that the Hattie B., aka the Puddle Jumper and the Sardine Express, helped saved the day when Salt River flooding knocked out most crossings.
When ADOT constructs a new road or bridge, you can thank somebody like Patrice Brun for being one of the first engineers to turn over the soil or move the rock. But Brun isn’t putting down asphalt or building bridge piers. As a geotechnical...
Depending on the job, ADOT’s team of engineers has different responsibilities and experiences. Delivering the state’s massive highway infrastructure system involves a variety of roles for engineers. During National Engineers Week, we bring...
While the most visible aspect of engineering at ADOT is building, maintaining and operating state highways, there’s a lot of prep work that goes into projects. One area of ADOT that does a lot of preparation work to help keep important...
It has been said that engineers solve problems you didn’t know you had in ways you don’t understand. At the Arizona Department of Transportation, our engineers do work that is technical and often complicated, and we depend on them to solve...
We have a great way for you to celebrate Arizona on Statehood Day.
Technology is everywhere when it comes to transportation these days, but, as this photo reminds us, at the end of the day we'll always need gearheads, tinkerers and handymen.
There's a magic that happens between small children and big trucks. That's what makes ADOT's participation in the Touch a Truck event even more special.
Connecting the Mariposa Port of Entry with I-19 in Nogales, State Route 189 is about to get an upgrade that will ease congestion, aid commercial travel and support Arizona's economy.