UPDATE: All lanes reopened on I-580 in Tracy after burning vehicle sparks brush fire

TRACY -- A vehicle fire along Interstate Highway 580 in Tracy spread to nearby vegetation Tuesday and the flames prompted a closure of both westbound lanes.

Cal Fire said the fire burned at least five acres in the area of Corral Hollow Road and I-580. 

KCBS Traffic said at one point, both westbound lanes were closed at Corral Hollow and traffic was being diverted off the highway. Drivers were advised to use I-5 to I-205 as an alternate. 

As of 12:23, Caltrans said the left lane and on-ramp at Corral Hollow were reopened, and the right lane remained closed.

Just before 2 p.m., Caltrans said the right lane had reopened.

There was no word on the cause of the vehicle and no reports of any injuries.