Interstate 10 appeared three times in a list of the top 10 most dangerous U.S. highways, with five Arizona freeway sections ...

Planning for a new interstate through southern Arizona has been put on hold. 280 miles of highway between Nogales and Wickenburg expanding Interstate 11 had been proposed by federal and state ...

Foes of a plan to construct a new interstate highway — including a segment that could go through environmentally sensitive ...

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

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