LOWER MERION, Pa. (WPVI) --Two crashes shut down a stretch of the Blue Route for hours overnight in Montgomery County.
The violent crashes around 11:30 p.m. Thursday caused havoc in the northbound lanes of the highway near the County Line Road overpass in Lower Merion Township.
It began when, in a single vehicle accident, a Jeep crashed into a right shoulder guard rail. Then the drivers of two vehicles, including that of a tractor trailer, stopped to help.
Then, moments later, a box truck caused a chain reaction crash when it hit a Hyundai, pushing it into the two vehicles that were stopped.
The driver of the Hyundai , a 19-year-old woman , was trapped under the box truck. Emergency crews freed her from the wreckage and she was taken to the hospital by helicopter.
The northbound lanes of the Blue Route remained shut down until just after 5 a.m. Friday.
State police charged the driver of the truck that caused the second accident with a summary violation for failing to drive at a safe speed.
Troopers have not said if they believe alcohol or drugs were a factor.