A 21-year-old Santa Rosa woman was arrested Sunday on suspicion of drunken driving after she crashed near a restaurant, sending debris flying through windows and injuring a customer, CHP officials said.

Witnesses said the 2005 Acura RL was speeding at about 90 mph on northbound Highway 101 when it careened onto the Baker Avenue offramp at about 8:44 a.m., Officer Marcus Hawkins said.

The driver, Jessica Ilene McDonagh, lost control, struck four traffic signs and a concrete culvert, crashed through a chain-link fence and hit a large landscaping rock, sending the rock and debris through windows at Denny's, Hawkins said.

As the glass shattered, diner Marjorie Diaz, 38, of Santa Rosa dove out of a booth, injuring a wrist, Hawkins said.

Paramedics treated Diaz at the scene and she later was treated by her family doctor.

McDonagh, who appeared to be very intoxicated and complained of pain, was taken to Santa Rosa Memorial Hospital, the CHP said.

Officers later arrested her on suspicion of drunken driving causing injuries and booked her into the Sonoma County Jail.

Three weeks ago, McDonagh was arrested on suspicion of drunken driving on the Baker Avenue overpass after she was seen speeding, Hawkins said. She was driving the same Acura, which is registered to a family member, he said.

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