One person was killed another injured during a single-vehicle accident early Monday morning in Madison County. The Iowa State Patrol said the driver of a 2010 Chevy pickup, identified as 24-year old Shawn Lewis Bentall Goodrich, of Adel, was injured in the crash and flown by helicopter to Mercy Hospital in Des Moines, where he was reported to be in critical condition today (Tuesday). He was not wearing a seat belt.

His passenger, 29-year old Ashley Nicole Nehls, of West Des Moines, died at the scene of the accident near Bevington off Interstate 35 southbound, at the 55.5-mile marker. The crash happened at around 2-a.m., Monday, but it wasn’t discovered until 9-a.m. Monday, when transportation officials were inspecting a sign that had been damaged following a semitrailer crash which occurred on Saturday.

The Iowa State Patrol says the pickup was traveling south on I-35 when for reasons unknown, it left the road and hit a sign for the Middle River, before it vaulted off the edge of the ditch north of a creek just north of the Middle River. The pickup came to rest wedged in the creek facing south, where the front of the vehicle had impacted.