NEW GLOUCESTER — A Cape Elizabeth woman is in serious condition at Maine Medical Center tonight following a collision between her sedan and a tractor-trailer on the Maine Turnpike.

State Trooper Fern Cloutier said a Honda Civic driven by 59-year-old Barbara Pierce of Cape Elizabeth collided with a truck driven by 55-year-old Otis Rogers of Ruleville, Miss., near mlle marker 70 in New Gloucester. The accident was reported around 5 p.m.

Pierce suffered a head injury and was taken to Maine Medical Center in Portland where she was listed in serious condition tonight.

Rogers was not injured, but his trailer bed blocked the turnpike, which prompted police to shut down both southbound lanes until it could be removed.

Cloutier said police were eventually able to reopen one lane of southbound traffic. But the accident restricted traffic flow between Exit 75 in Auburn and Exit 63 in Gray for about three hours. The turnpike did not completely reopen until 8 p.m.

Cloutier said the cause of the crash remains under investigation.