Uncertainty reigned as state and local officials scrambled to determine the effects of President Trump's Tuesday directive pausing federal grant funding, which a judge halted shortly before it was scheduled to go into effect.

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

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

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 interstate’s approval was based on a deeply flawed ...

In response to a lawsuit from conservation groups, the Federal Highway Administration and Arizona Department of Transportation have agreed to halt planning activities and reevaluate their approval of Interstate 11.

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

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

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.

Foes of a plan to construct a new interstate highway — including a segment that could go through environmentally sensitive portions of Pima County — have won a