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.

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 ...

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 ...

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.