Pennsylvania Turnpike officials say 35 vehicles piled up on 26 December, 2013.
Highways in eastern Pennsylvania have been reopened after being shut down for hours because of chain-reaction pileups that ensnared dozens of vehicles on snow-covered roads.
No deaths have been reported.
Pennsylvania Turnpike officials say 35 vehicles piled up on Thursday, blocking westbound lanes and causing a 4-mile backup about 50 miles west of Philadelphia, between the Morgantown and Reading exits.
Turnpike spokeswoman Renee Colborn says the highway reopened after 5 p.m. and about 10 people were taken to hospitals.
Meanwhile, state police say 25 to 30 vehicles piled up on Interstate 78 and shut down about 5 miles of westbound lanes, also in Berks County.
The lanes reopened after 3 p.m. Trooper David Beohm says 25 people were taken to hospitals and 44 were treated at the scene.