North of the stoplight at 19th Avenue, it became an elevated highway in order to avoid level crossings with the multiple railroad tracks that passed beneath. Immediately after crossing 9th Street, the elevated highway returned to the surface and the two directions of traffic split into a one-way couplet – S. 6th Street northbound and S. 7th Street southbound. The division of the two directions also marked the end of the South Expressway. As Iowa 192 approached the west side downtown Council Bluffs, it passed the historic Pottawattamie County Jail, a three-story rotary jail used from 1885 to 1969.