Idaho State Police say Kimberly Hayes of Boise was driving Northbound when she failed to negotiate a turn and crossed the center line swiping a trailer on Highway 75.
Idaho State Police Dispatch says the accident involved at least three motorcycles.
The accident happened on Highway 75 near Galena Summit. The highway was closed from Galena Summit to Baker Creek for several hours.
Multiple people suffered injuries but details are unavailable on the extent of injuries or number of patients.