BOISE -- The only survivor in a fatal crash on the Sweet-Ola Highway is clinging to life in a Boise hospital.
That accident near Horseshoe Bend killed David Coburn, 38, of Emmett, and two of his daughters on Saturday.
Idaho State Police say 6-year-old Taylor Coburn is in critical condition at St. Luke’s Regional Medical Center.
Gem County Sheriff's deputies say 18-year-old Devin Morgan of Sweet was traveling northbound on the highway Saturday morning in a Ford truck when his trailer loaded with irrigation pipe disconnected from his truck.
David Coburn was traveling southbound on the highway in a Ford F-350 pickup when he hit the disconnected trailer.
Deputies say Coburn then lost control of his truck and went off the road down a 25-foot embankment and into a creek.
One witness to the crash jumped in the creek and tried to rescue the family.
"There were people there very quickly, and I know that there were attempts made, but the water is fairly deep and it's moving hard," said ISP Sgt. Gordon Dye.
The temperature of the water was between 30 and 40 degrees.
David Coburn was pronounced dead at the scene.
His three daughters were taken to area hospitals, but four-year-old Ellie Coburn and eight-year-old Kaitlyn Coburn were later pronounced dead.
Morgan and his young passenger were not hurt.
The accident is still under investigation
Once Idaho State Police are done with their investigation, it will be forwarded to the Gem County Prosecutor's Office for review and any decisions about criminal charges.
Police say there is no indication that alcohol or drugs were a factor in this crash.