BLACK CANYON CITY, Ariz. — Authorities say a brush fire burning in the median of Interstate 17 near Sunset Point Rest Area north of Black Canyon City is causing serious delays for southbound traffic late Saturday afternoon.

The Arizona Department of Transportation says there’s a seven-mile (11-kilometer) backup from Bumble Bee Road to Badger Springs Road.

I-17 is the main route between Phoenix and Flagstaff.

The department advises drivers to consider taking an alternative route, such as State Route 260 through Camp Verde to State Route 87 through Payson.