UPDATE, 4:50 P.M.:
All lanes of I-95 northbound have reopened, officials said.
Part of Interstate 95 North in Fairfax County is closed after a fuel leak from a vehicle, officials said.
It was not known if anyone was injured.
The incident happened near Backlick Road. Fairfax County Fire officials said about 100 gallons of fuel were leaking from a tank on a vehicle.
Crews were working to contain the leak. It is not known how long the roadway will be partially closed.