June 24, 2002: The Avenue of the Saints joins/leaves US 218 near George Wyth State Park in Black Hawk County. Notice the multiple varieties of state route markers on the BGSs, the different letter sizes, and the retrofit of the far-right sign. These have been replaced (Google Street View); IA 27 now comes before IA 58 on the middle sign and the UNI destinations are underneath.
(This also serves as a 57/58 sequential intersection, but the Chicago comparison was too good to pass up.)