A nasty crash this morning involving a tractor-trailer and a Philadelphia Fire Department tiller ladder truck shut down all lanes of I-95 for more than three hours. Five firefighters were hurt in the crash, which happened around 0320 hours in the southbound lanes of Interstate-95 just north of Washington Avenue. The firefighters were responding to a different crash when the driver of a tractor-trailer lost control. The big rig jackknifed and struck the rear section of the Philadelphia Fire Department’s Ladder 16. All Firefighters suffered NLT injuries.