Kienen Wayrynen, the 15-year-old boy injured Thursday after hitting an SUV while riding his bicycle in Hazel Dell, was upgraded to satisfactory condition at PeaceHealth Southwest Medical Center on Friday morning, and was discharged from the hospital Friday evening.Kienen had been listed in critical condition late Thursday.He was riding downhill and against traffic on a sidewalk on the north side of Northwest 99th Street, in front of Columbia River High School, when he hit an SUV that was leaving a parking lot just before 4 p.m. The SUV’s driver, Dana Wilcox, 37, of Vancouver braked and may have been stopped before the bicycle hit her car. Kienen tried to avoid the SUV and crashed into the front passenger side near the headlights and bumper, said Sgt. Randon Walker with the Clark County Sheriff’s Office.Kienen is the son of The Columbian’s photo editor, Troy Wayrynen.Friday afternoon, sheriff’s Sgt. Steve Shea called The Columbian to correct information about state traffic laws that had been provided by the sheriff’s office earlier. Kienen did not violate traffic laws prior to the crash, as previously reported. Shea, a former traffic accident investigator, said Washington law allows bicyclists to ride on sidewalks, though they must yield the right of way to pedestrians, and that drivers of vehicles must yield the right of way to both bicyclists and pedestrians on sidewalks.