The massive expansion of Interstate 17 from Black Canyon ... Work began last year, and travelers heading north from Phoenix on I-17 now see the first signs indicating they are in for 23 miles ...

FLAGSTAFF, AZ (3TV/CBS 5)-- Federal and state officials hope a $24 million grant will help reduce wildlife encounters along a heavily traveled portion of Interstate 17 in northern Arizona.

The Arizona Department of Transportation is opening a third travel lane for drivers as Memorial Day Weekend approaches.

PHOENIX — Traveling around Flagstaff streets will soon be safer ... of a new bridge carrying J.W. Powell Boulevard over Interstate 17. This bridge is part of a busy I-17 interchange.

No, it's not a repeat of this time last year when southbound I-17 in north Phoenix was closed for ... between SR 74/Carefree Highway and Loop 303, from 10 p.m. Friday to 5 a.m. Monday.

ADOT will open Arizona's first flex lanes in 2025 on an 8-mile stretch of freeway near Black Canyon City. The $522 million project has lasted 3 years.

Wildlife roaming south of Flagstaff will soon have access to safe passage across Interstate 17 as state ... underneath the highway. Essential environment and climate news: Sign up for AZ Climate ...

The Arizona Department of Transportation is set to introduce a new type of lane on Interstate 17 ... the system beyond the I-17 corridor between Phoenix and Flagstaff. How long has ADOT been ...