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

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

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

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

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

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

TUCSON, Ariz.— Conservation groups sued the Federal Highway Administration today to challenge its approval of Interstate 11, a proposed north-south highway in Arizona that would destroy pristine ...

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.

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 ...