Officials with the Cass County Engineer’s office in Atlantic, say Iowa Interstate Railroad will be upgrading the railroad crossing on Olive Street approximately 1½ miles north of the Atlantic City Limits by the ADM Elevator (formerly known as Farm Service Coop).  Olive Street will be closed to thru traffic for approximately five (5) working days starting Monday, September 12^th at 9:00 A.M.  People wanting to go to the interstate should use Hwy 71 until Olive Street is open.