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

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

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

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

As Arizona’s Family reported, one of the threatened species is the cactus ferruginous pygmy owl, whose climate would be ...

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

The White House put a pause on some federal grants and loans. But late Tuesday a federal judge issued a stay on that finance ...

Federal funding for Arizona infrastructure projects is in question after President Donald Trump ordered the termination of the "Green New Deal" hours after his inauguration. Democratic leaders in ...

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

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 ...