The accident occurred around 6:30 a.m., the Washington State Patrol reported.
The 19-year-old driver of a Subaru was arrested for investigation of vehicular assault, trooper Mark Francis said. He was suspected of driving under the influence of alcohol.
A passenger, 21, suffered a possible skull fracture. He was sitting in the middle of the back seat when he was ejected from the car, Francis said.
He was taken to Providence Regional Medical Center Everett.
The Subaru hit a guardrail before rolling over, Francis said.
The accident left one lane for traffic, causing long backups while troopers allowed alternating groups of cars past the rollover.
More Local News Headlines
It's not easy to keep exotic animals as pets and many fall victim to their own popularity or become pests in an alien environment I-1366 forces state’s hand Details out on proposed vaping ban 6 vie for 3 seats on Snohomish City Council Granite Falls to choose between mayor, city manager Tim Eyman stays mum on probe 1 arrested in Bellevue for Sept. assault, burglary in Monroe Six seek three contested seats on Everett City Council
Our new comment system is not supported in IE 7. Please upgrade your browser here.