A woman suffered serious injuries after she turned in front of an 18-wheeler Thursday afternoon at the intersection of U.S. 278 and Buck Island Road, Bluffton Police said.

The woman was making a left turn at about 4:40 p.m. from westbound U.S. 278 onto Buck Island Road when the tractor-trailer, which was traveling east on U.S. 278, crashed into the passenger side of her Cadillac.

The unidentified woman was extricated from the wreckage by firefighters from the Bluffton Township Fire District and flown by LifeStar helicopter to Memorial University Medical Center in Savannah. Hospital officials did not release her condition.

Eastbound traffic on U.S. 278 was re-routed for about an hour because of the crash.

Bluffton police continue to investigate the cause, a news release said.