Driving in Arizona can be a blast – we’ve got some absolutely magnificent roads that make for wonderful road trips. However, it doesn’t take an engineer to realize all the twists and turns of Arizona highways can be frightening at times, but not everyone knows just how dangerous they are. According to TRIP, a national transportation research nonprofit, the Grand Canyon State has more interstate fatalities than anywhere else in the U.S. There are some really dangerous freeways in Arizona. Here’s everything you need to know:

Interested in learning more about highway safety standards and the most dangerous interstates in Arizona? Find out more on the TRIP website.

Did you know Arizona has some of the deadliest interstates in the country? Let us know your thoughts. U.S. Highway 93 is one of the most dangerous interstates in Arizona, though thankfully the conditions have improved over recent years.

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Deadliest Highways in Arizona

What are the most dangerous Arizona interstates?

The most dangerous interstates in Arizona are as follows:

  • I-17 northbound from Pheonix to Flagstaff
  • Interstate 19 from Nogales to Tucson
  • Highway 93 from Wickenburg to Las Vegas


Arizona is a gorgeous state, but unfortunately, it’s home to some of the most dangerous interstates in the country. One of those statistically riskier treks is the I-17 northbound from Phoenix to Flagstaff. It’s a very popularly traveled route that sees millions of drivers year in and year out, and unfortunately, many a soul has lost their lives along the way thanks to many different factors. The I-17 has an alarming .707 deaths per mile, which is much higher than the national average. Interstate 19, from Nogales to Tucson, is another highly dangerous stretch of road, with a harrowing .623 deaths per mile, also due to various factors. Highway 93 from Wickenburg up to Las Vegas is also one of the most dangerous interstates in the United States, thanks in part to its endless miles of highly remote landscape where it takes quite a while for help to arrive in the event of an emergency.

What are some dangerous things to avoid in Arizona?

Arizona is a state that’s as dangerous as it is beautiful; there are plenty of things here, natural and man-made, that can (and might) kill you. For example, the heat alone is enough. Every year, more than 250 people succumb to heat-related illnesses, and more than 3,000 people visit the emergency room for the same ailment. Many heat-related illnesses and death come from people who try to hike during the hottest days of the hottest months of the year; there are almost always at least a few desert rescues yearly. Some of Arizona’s cities and towns are fairly dangerous, too, and many of them tend to make the “most dangerous” lists year after year. For the most up-to-date list of Arizona’s most dangerous places after dark, check this article out! 

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