LINCOLN — The southbound lane of Interstate 95 just north of the Lincoln exit was blocked for more than three hours early Wednesday morning after a tractor-trailer jackknifed and blocked the two-lane roadway.

Traffic was backed up for three to four miles, said Maine State Trooper Matthew Grant.

The trooper said the tractor-trailer operated by Frederick Hartenstien, 50, of North Chelmsford, Mass., was traveling south on the interstate about 5:10 a.m. Wednesday.

“The road was like a bottle,” Grant said in describing the icy conditions of the road in the early morning hours.

As the tractor-trailer driver began to cross the overpass on the interstate, Grant said, the wind came up and shifted the empty box trailer, the operator lost control and the vehicle jackknifed. “It wedged the truck between the guardrails [on each side of the roadway],” said Grant.

The trooper said the driver was not injured.