The highway continues north out of Tekamah, still following the edge of the rolling hills and Missouri River plain passing through rich agricultural fields, for 15 miles before coming to an intersection with N-51 on the south edge of Decatur just west of the Onawa Materials Yard and Middle Decatur Bend State Wildlife Areas, both enclaves of Nebraska that are situated on the eastern side of the Missouri River and are only accessible via roads in Iowa.