| Special Bridge Conditions Legend |
| ! | Confirmed demolition date within one year or an especially historic bridge that is threatened with demolition at any level. |
| X | The bridge has been confirmed demolished or collapsed. |
| S | The bridge has been dismantled or moved to an offsite location and is not currently available for public viewing. |
| L | Most or all of the original bridge material has been demolished and replaced, including historically significant elements, but some original parts of the bridge remain. |
| Note: This website cannot guarantee the current condition of any bridge on this website. Bridges lacking these icons should not necessarily be considered condition-free. |
| Bridge Name | HSR Rating | Facility Carried / Feature Intersected | Location | Structure Type | Structure Dimensions | Construction Date / Builder or Contractor | Description | Thumbnail |
Aux Sable Creek Aqueduct
|
 | Illinois and Michigan Canal Over Aux Sable Creek | Rural: Grundy County, Illinois | Metal Through Girder, Fixed | Main Spans: 3 | 1927 By: Unknown | Carrying water over water, this is an extremely unusual surviving historic bridge in the United States. | 
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Dellos Road Bridge
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 | Dellos Road Over Aux Sable River | Rural: Grundy County, Illinois | Stone Semicircular Deck Arch, Fixed |
Total Length: 122 ft Main Span Length: 35 ft Roadway Width: 19 ft Main Spans: 3 |
1873 By: Unknown | This stone arch bridge has been encased in concrete. | 
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Grand Ridge Road Bridge
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| Grand Ridge Road (TR-109B, CR-3000 South) Over West Fork Mazon River | Rural: Grundy County, Illinois | Metal 5 Panel Pin-Connected Pratt Full-Slope Pony Truss, Fixed |
Total Length: 72 ft Main Span Length: 71 ft Roadway Width: 11.8 ft Main Spans: 1 |
By: Unknown | This bridge appears to be an early example of a pin-connected truss bridge and is unaltered. | 
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Illinois and Michigan Canal Bridge 1
|
 | Canal Walkway Over Illinois and Michigan Canal | Rural: Grundy County, Illinois | Metal 5 Panel Rivet-Connected Pratt Full-Slope Pony Truss, Fixed | Main Spans: 1 | By: Unknown | This attractive truss bridge, now converted for pedestrian use, appears to have been originally built to access canal related facilities. | 
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Illinois and Michigan Canal Bridge 2
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 | Canal Walkway Over Illinois and Michigan Canal | Rural: Grundy County, Illinois | Metal 5 Panel Rivet-Connected Pratt Pony Truss, Fixed | Main Spans: 1 | By: Unknown | This truss bridge is unusual because of its lightweight members and vertical end posts. | 
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