Meghan L. Honeycutt of Thayer, was pronounced dead at the scene of the accident by Oregon County Coroner Robert Clary.
Her twin sister, Morgan D. Honeycutt, 16, was taken by Air Evac to St. Johns Hospital in Springfield, and then transfered to a Columbia, Mo., hospital in serious condition.
The driver and occupant in the other vehicle, Ely D. Dotson, 17, of Birch Tree, and William C. Heilman, 17, of Alton, where also taken by Air Evac to St. Johns Hospital in serious condition.
According to the crash report issued by Missouri Highway Patrol Trooper S.N. Foster, Trooper J.C. Howell and Sargeant J.S. Brumble, the accident occurred at approximately 10 p.m., March 5, on U.S. Highway 160, about two miles west of Alton.
The report said the crash occurred when Dotson, the driver of an eastbound 2001 Oldsmobile Alero, crossed the center line. When the driver of the westbound vehicle, a 1999 Toyota Celica, Meghan Honeycutt, attempted to avoid the collision, both vehicles struck head-on ejecting Honeycutt from her vehicle.
Meghan and Morgan Honeycutt both worked at the McDonald's in Thayer.
Manager of the Thayer McDonald's, Shirley Hollis, said Monday, Morgan had undergone surgery on her jawbone and one leg but still had other surgeries ahead of her.
"This has really torn us all up," Hollis said. "It's a tragedy and such a stunning loss. The girls are like family -- we all are here at McDonald's. They we're loved by everybody, the employees and the customers."
No current update on Dotson or Heilman's condition was available on Monday.
Funeral arrangements for Meghan Honeycutt were not complete as of press time but will be under the direction of the Carter Funeral Home in Thayer.