A one vehicle accident in Platte County Friday, about 2:30pm, slightly injured the driver and her passenger. According to the patrol report, Grace Olson, 24, of Woodlands Texas was Southbound on Interstate 29 at Highway 152, when an unknown vehicle merged into traffic and forced Olson to swerve and loose control. Olson struck a concrete barrier before overturning. Olson and her passenger, Daniel Casey, 22, of Davidson, North Carolina, received minor injuries but refused treatment at the scene.