A 32-year-old woman was arrested on suspicion of DUI after allegedly driving the wrong way on the Bay Bridge Saturday night and crashing into three vehicles, the California Highway Patrol said. Officers responded to reports of a wrong-way driver traveling west in the eastbound lanes of Interstate Highway 80 on the bridge around 8:30 p.m., police said. Vacaville resident Karrie Lyn Morgan allegedly entered the freeway from the toll plaza, collided head-on with a vehicle and sideswiped two other cars, according to police. Morgan and three others were transported to San Francisco General Hospital for treatment, CHP Officer Daniel Hill said. Morgan and two others suffered minor injuries, and one person suffered major injuries, CHP officials said.All eastbound lanes were closed for about 15 minutes for emergency crews to access the crash site. Lanes were reopened by 10:15 p.m. After being medically cleared at the hospital, Morgan was booked into San Francisco County Jail on suspicion of driving under the influence of certain drugs, driving under the influence of drugs that causes injury to another and being an unlicensed driver, CHP officials said.