The State Patrol said 45-year old Juneau County Sheriff Brent Oleson was involved in a two-vehicle accident Friday morning in the City of Mauston.  Shortly before 10am…Oleson was traveling north on Hickory Street and struck a car being operated by 41-year old Rhonda Pollack-Helling.   Pollack-Helling was traveling west on La Crosse Street near the Justice Center.  She was transported to Hess Memorial Hospital with non-life threatening injuries.  Sheriff Oleson was uninjured.  The accident is still under investigation by the State Patrol.  Enforcement action is pending.