Illinois has less historic bridges than many of the states which
surround it, except for Cook County and Chicago. HistoricBridges.org is
proud to offer the most extensive coverage of Cook County and Chicago
bridges available on the Internet. Cook County has one of the largest
numbers of historic bridges in the country.
Iroquois County once had one of the largest truss bridge populations in the state outside of Cook County, but has demolished many of its bridges. The remainder of of Illinois is noted for a variety of traditionally composed pin-connected truss bridges and also concrete through girders. However preservation of bridges outside of Chicagoland is nearly nonexistant in Illinois.
Select a location to view the available bridges for that location. Select from the interactive map available below, or select from the text list next to the map. On the map, names in blue denote locations that have bridges available to view.
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Jo Daviess County
La Salle County
Rock Island County
St. Clair County