Officials in Douglas — along the border between Arizona and the Mexican state of Sonora — have declared a state of emergency.

Trains crossed over the Salt River Bridge for the first time, marking a new milestone as testing expands south toward the ...

Navajo communities learn uranium dangers from comics while lacking emergency plans for new mining trucks crossing tribal ...

Navajo Nation and Energy Fuels reach agreement on uranium ore transport through tribal lands, adding new safety measures and ...

Arizona's longest bridge may not be it's most famous, but it is an architectural wonder. Here's what to know about the bridge ...

The improvement project along Interstate 10 near Sky Harbor International Airport continues to cause weekend road closures ...

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 ...