(Menlo, Iowa) – An accident involving a semi-tractor trailer rollover had eastbound Interstate 80 in Adair County blocked in both lanes, and traffic being re-routed, Friday afternoon. According to the Iowa State Patrol, the accident happened near Greenfield exit (Exit 86).  Eastbound traffic was diverted to an alternate exit and around the crash scene. Additional information is not available as of the time of this report.