He was traveling eastbound on Highway 272 when he failed to negotiate a turn and skidded off the road. A passing motorist discovered the accident and called it in. Fire, police, and Med-star air ambulance personnel responded to the scene, but they were unable to save the victim.
Washington State Police have identified the victim as 81-year-old Bernard Biddle of Richland, Washington. The cause of the accident is still under investigation, but he was wearing a helmet.