The proposed freeway would run from Wickenburg to Nogales and has been subject to lawsuit filed by a conservation group.

Conservation groups say the proposed Arizona routes for an Interstate 11 project failed to consider habitat for imperiled desert species.

The Petrified Forest and Painted Desert are uniquely Arizona road trip destinations. Here's why it's worth the drive and what ...

As Arizona’s Family reported, one of the threatened species is the cactus ferruginous pygmy owl, whose climate would be threatened as part of the highway’s construction.

Firefighters are battling a wildfire reported Tuesday afternoon on the Navajo Nation near the New Mexico-Arizona state line.