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 ...

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 ...

The proposed freeway would run from Wickenburg to Nogales and has been subject to lawsuit filed by a conservation group.

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 ...

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.

Arizona's Executive Budget boosts highway maintenance funding and aids rural areas in securing federal grants.

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 Arizona Department of Transportation (ADOT) and The Federal Highway Administration have agreed to halt planning plans amid concerns about threats to endangered species, public lands and water.