State Police say they have reopened the right lane and the breakdown lane on Interstate 495 southbound in Lowell, where traffic has been stalled due to a car fire.

The fire comes as drivers are headed home or to vacation spots at the beginning of a hot summer weekend.

State Police had reported just after 4 p.m. that they had closed the highway.

The boston.com traffic information service reported that the highway was closed between Exit 41 and Exit 37.