A crash on Interstate 81 northbound near Ravine is causing a backup of traffic Wednesday afternoon.
Just before 2:30pm, emergency personnel were called to northbound Interstate 81 for a motor vehicle accident.
The crash has narrowed traffic to one lane and is causing backup stretching to almost the Pine Grove Exit.
UPDATE: As of 4:10pm, Interstate 81 northbound is now closed at Exit 104 Ravine.
Avoid the area and look for an alternate route.