The Iowa State Patrol says one person died as the result of a single-vehicle rollover accident on Interstate 29 Thursday evening, in Pottawattamie County. 47-year old Eileen J. Walpus, of Glenwood, died after being flown from the scene of the crash near Council Bluffs, to the Creighton University Medical Center in Omaha. Officials says Walpus was traveling on I-29 at around 5:40-p.m. when her 2005 Dodge Neon left the road and entered a ditch before traveling through a fence and onto Beacon Lane. From there, the car entered another ditch and rolled over before finally coming to rest on its top. The Patrol says Walpus was wearing her seatbelt. The accident remains under investigation.