Troopers say a 1998 Harley Davidson driven by 78-year-old Keven Okinsella of Chelan was northbound on the highway when he lost control for an unknown reason.
Troopers say a 2007 Honda motorcycle driven by a 53-year-old man from Seaside, Oregon was northbound on SR 153 just north of Pateros when it hit a patch of oil.