State troopers are investigating a rollover crash that trapped the driver and shut down a ramp on Interstate 80 in Hubbard Township for nearly an hour early Friday.

A caller to 9-1-1 reported that the vehicle rolled over in the westbound lane of I-80 just west of the Route 62 interchange shortly after 2 a.m.

The driver, who was trapped in the wreckage, was freed by a rescue squad. The patrol describes her injuries as minor.

Police blocked the ramp from Route 62 to westbound 80 until 3 a.m. while the crash was being investigated.