Drivers are being asked to avoid the southbound lane of I83 for the next several hours due to an accident near the Strinestown/Zions View exit 28.
The incident occurred around 1:30PM just north of the southbound exit ramp.
York County 911 transmissions indicated a vehicle flipped over and ended up in the woods along the interstate.
All occupants were able to get out, according to a dispatcher.
Southbound traffic has been reduced to one lane at the site of the crash and is backed up more than a mile.
Northbound traffic also appears to be slowing at the crash site.