Sohn was a sophomore at Seattle Pacific University, school officials said, majoring in visual communication.
Nine people were killed and 38 injured when the tour bus crashed through a guardrail and 200 feet down an embankment along Interstate 84 east of Pendleton on Dec. 30. The bus was returning to Vancouver, British Columbia, after a nine-day trip.
Eight of the injured are still in various hospitals receiving treatment for their injuries. Investigators have yet to say what caused the crash, which was Oregon's deadliest since 1971.