Uncertainty reigned as state and local officials scrambled to determine the effects of President Trump's Tuesday directive ...

The Arizona Department of Transportation (ADOT) and The Federal Highway Administration have agreed to halt planning plans ...

Arizona Gov. Katie Hobbs proposed an extra $15.8 million as part of the executive budget to go to the Arizona Department of ...

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

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

Funding for Arizona projects to widen Interstate 10 and improve Sky Harbor Airport are in question after Trump terminated the ...

Foes of a plan to construct a new interstate highway — including a segment that could go through environmentally sensitive portions near Tucson — have won a temporary reprieve.

The Arizona Department of Transportation will decide the route through Pima County. Initially the Federal Highway Administration recommended that the interstate go through undeveloped desert in Avra ...

PHOENIX — Arizona’s transportation ... according to the U.S. Department of Transportation’s Federal Highway Administration (FHWA). In addition to costing the U.S. its wild animals, it ...

The Federal Highway Administration will, beginning later this year, require that manufactured products used on federal-aid ...

Federal and state transportation agencies will halt planning activities for a proposed 280-mile highway between Nogales and Wickenburg in response to a lawsuit brought by conservationists.