A one-vehicle crash at Frog Hollow and Valley Chapel roads sent five people to the hospital Friday night, according to the Washington State Patrol.
The driver, Ashley O'Neil, 22, of Milton-Freewater, has been airlifted to Harborview Medical Center.
The wreck happened at 11:27 p.m. about five miles east of Walla Walla.
Driving a 1992 Volvo, O'Neil was eastbound on Frog Hollow Road when she failed to negotiate a curve and the car struck the guardrail, police said. The car came to rest on the eastbound shoulder.
Fire District 4 responded to the scene and found the guardrail entered the car through the windshield and exited through the rear window. Emergency responders extracted O'Neil, noted Brian Jones, assistant chief with the fire district.
There was no rain at the time, but the road and fields were wet, he added.
O'Neil had four passengers with her and three were taken to Providence St. Mary Medical Center by ambulance, the state patrol said.
Mari G. Swinnerton, 17, Walla Walla, was stabilized and transferred to Kadlec Medical Center, where she was being evaluated in the emergency department at 9 a.m. Tanner L. Homewood, 21, and Charles A. Buettner, 25, both of Walla Walla, were treated and released, noted the hospital's nursing supervisor, who added that no information was available about Chantal M. Brown, 22, Walla Walla, who was taken to the hospital by a private party, officials said. All five were reportedly using seat belts.
O'Neil was initially transferred to Kadlec, where she was stabilized and transferred to Harborview at about 3:15 a.m. today, a spokesman at Kadlec said.
The wreck is still under investigation.