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 ...

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 ...

In the arid heart of the California desert lies Highway 80, a forgotten relic of America’s transportation history. Once a ...

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

In response to a lawsuit from conservation groups, the Federal Highway Administration and Arizona Department of ...

A stretch of State Route 87 north of Mesa was closed Wednesday while authorities searched for a suspect in a hit-and-run ...