The car hit a fence and a tree before flipping over and landing on its roof. Investigators say four people were inside the car. Two passengers died at the scene.
The driver survived and was flown to Community Regional Medical Center for treatment. Another passenger is recovering at a hospital in Hanford.
Grangeville Blvd. was back open Saturday morning after being closed for more than two hours Friday night. Authorities are investigating whether alcohol played a role in the crash.