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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.
As we mark National Engineers Week, let’s introduce you to where the action happens: ADOT’s State Engineer’s Office, led by State Engineer and Deputy Director Audra Merrick.

Popular blog articles

Check out this video. Not only does it give an up-close look of what’s happening at the US 89 site, it also provides us with a few new, interesting geotechnical terms, including inclinometers, extensometers, LiDAR and DTM ...
Wow … we’ve certainly received a big response to all of the videos, Tweets, blog posts and news releases related to the closure of US 89 south of Page. A huge thank-you goes out to everyone who has helped us spread the word!
When engineers suspect a slope or embankment might be moving, they can use an inclinometer to see if their hunch is correct …
Guardrails. You see them all the time, right? But, how often do you really think about the important job they’re performing?
By now, many of you have probably already seen photos of US 89 … A 150-foot section of the road “buckled” yesterday morning (Feb. 20) in an area about 25 miles south of Page – the cause of the highway damage may have been a geologic event ...
Ever think about where we’d be without engineers? We know we certainly wouldn’t have most of the “stuff” that surrounds us in our everyday lives, or, if we did, it probably wouldn’t operate the way it does now ...
ADOT has been constructing roads in Arizona for a long time, but technology and methods sure have changed along the way. Want some proof? Just look at these photographs!
Did you know you can check your commute before you head out on the road? All you have to do is visit az511.gov and take a look at the view from our freeway cameras …
When developing a future route, ADOT planners don’t just guess where the road should go. Instead, they depend on detailed data and planning analysis tools to make their decisions …
When it comes to conducting business with ADOT’s Motor Vehicle Division, customers have more than one alternative ...