The girl ran into the road and was hit by an unknown vehicle eastbound near milepost 45.3 in Parsippany-Troy Hills just before 3:30 a.m., NJSP Trooper Alejandro Goez told Daily Voice.
The girl was pronounced dead at the scene, Goez said. Her name was not released.
The center and right lanes were closed for about three hours during the crash investigation.
Click here to follow Daily Voice Marlton-Evesham and receive free news updates.