(Argosy #1, 121', 1999, 13-60-(a) across part of Mississippi River in Alton, Madison County, IL. Where US67 turns from S. to E. in Alton, the bridge is just S. of that corner on the riverfront at 1 Front St. The entrance to the Argosy Casino. (N38 53.325 W90 11.183) Photos by Jack Schmidt 2-23-06.