ADOT widens I-10, but will it be enough?
The number of cars traveling between Tucson and Casa Grande could quadruple in two decades.
State Seeks Public Comment on Proposed New Interstate
The Arizona Department of Transportation has released its preferred route for a new interstate from the Mexican border to north of Phoenix.
Proposed Arizona Highway I-11 Generates Support, Opposition
Some are calling a smart step toward boosting trade, while others say it's unnecessary and warn of its environmental impact.
