Drivers on Interstate 80 were getting distracted by the flames and smoke.
The fire broke out just after 7:30 p.m., near Pleasants Valley and Cherry Glen roads. Pleasants Valley Road was closed between Cherry Glen and Foothill, but no homes were threatened.
Firefighters saythey had the fire fully contained by 11 p.m., but said they would keep crews on the scene all night.
There's no word on what caused the fire.