Icy conditions on the Dee Highway caused four motor vehicle accidents on Thursday morning, including one which led to a young girl being taken by helicopter to a hospital.  Hood River County Sheriff’s spokesman Pete Hughes says the first accident occurred at about 5:45 a.m. at Dee Highway milepost 8.5, where snow melt from the side of a hill had frozen onto the road.  A vehicle was northbound when it hit the ice, spun out of control, went off the road, hit a tree, and caved in the passenger side of the vehicle, trapping a six-year-old girl.  Hughes said Parkdale fire crews cut into the vehicle and removed the girl, who was flown to a hospital with a suspected broken leg.  He added that her mother, who was driving the vehicle, was not hurt.  There were three more rollover accidents at that location this morning, but Hughes said there were no serious injuries.  He noted that area of Dee Highway is a historically bad spot during icy conditions, and deputies urge motorists to watch for slick conditions.