The Owen Sound Police Service has re-opened the intersection at 20 th Street West and 4 th Avenue West after a serious motor vehicle collision. Police are investigating a collision between a motor vehicle and a pedestrian. The pedestrian was initially transported to the Grey Bruce Health Services and was later air-lifted to a London Hospital in critical condition. The driver of the motor vehicle was not injured. Police are continuing their investigation into this collision and request that anyone with information contact the Owen Sound Police Services or Crimestoppers.