FRANCONIA - A section of Interstate 93 just north of Franconia Notch was closed more than two hours Thursday after a tractor-trailer jackknifed during a snowstorm.

Richard Dugas, 52, of Dewy Rose, Ga., lost control of the 2009 International truck, which was towing an empty trailer, as he was driving north about 6:15 p.m.

The unit jackknifed, hit a guardrail on the right side of the road and spun around, unhitching the trailer.

Dugas was ejected in the crash and was transported to Littleton Regional Hospital to be treated for lacerations, according to a news release issued by New Hampshire State Police.

Police said snow was falling heavily and roads were slippery at the time of the crash.

The accident remains under investigation but preliminary indications are that Dugas was traveling at excessive speed for existing conditions, state police said.

Northbound I-93 was closed more than two hours and traffic was diverted at Exit 34C while the tractor-trailer was removed.

State police were assisted at the scene by Franconia police and fire and the state Department of Transportation.

Anyone with information about the crash is asked to call Trooper Meredith Favreau at Troop F at 846-3333.