The accident, which occurred just before 5 p.m., has traffic backed up for miles.
It is unknown when the roadway will reopen.
Truck accident backs up traffic for miles on I-95
Source/www.penndot.com
A truck accident on I-95 between Exit 44 in Levittown and Exit 40 in Bristol in Bucks County has all southbound lanes closed, according to PennDOT.