On September 27, 2015 at about 2PM, OSP Troopers and emergency personnel responded to the report of a crash involving a motorcycle on Interstate 5 near milepost 6 (near Siskiyou Summit). Preliminary information indicates a 2004 Yamaha motorcycle was traveling northbound on Interstate 5 negotiating a right hand curve when the rider lost control. The motorcycle first struck four orange construction barrels and then a concrete barrier. The operator, William R LARSON, age 70, from Toledo, Washington was taken to Rogue Regional Medical Center by ambulance. LARSON was pronounced deceased upon his arrival at the hospital. One lane of northbound was closed for two hours while the investigation was conducted. It is believed speed is a contributing factor.