The I-95 northbound lanes reopened shortly before 2 p.m. Monday, after being closed to allow Maine State Police to recover a tractor trailer at mile marker 171.
The closure affected I-95 northbound from Exit 167 to Exit 173 starting at 9 a.m., the Maine Department of Transportation said. Detour Route C was used.
A tractor trailer carrying Bangor Daily News papers went over the guardrail and landed on its side down a steep hill on the interstate after being hit by a pick-up truck, according to Darrel Smith of Ryder System Inc., the company that owns the truck.
The driver of the tractor trailer carrying the BDN papers was not seriously injured.