| 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 |
Iroquois 100 Bridge
TR-371 Bridge |
 | Iroquois 100 Over Fountain Creek | Rural: Iroquois County, Illinois | Metal 4 Panel Pin-Connected Pratt Half-Hip Pony Truss, Fixed |
Total Length: 62 ft Main Span Length: 59 ft Roadway Width: 15.7 ft Main Spans: 1 |
1899 By: Massillon Bridge Company of Massillon, Ohio | This pony truss is in decent shape yet has been abandoned. | 
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Iroquois 1250 Bridge
TR-247 Bridge |
 | Iroquois 1250 Over Spring Creek Tributary | Rural: Iroquois County, Illinois | Metal 4 Panel Pin-Connected Pratt Bedstead Truss, Fixed and Approach Spans: Metal 5 Panel Rivet-Connected Double-Intersection Warren Pony Truss, Fixed |
Total Length: 96.5 ft Main Span Length: 49.5 ft Roadway Width: 14 ft Main Spans: 1 |
1885 By: Smith Bridge Company of Toledo, Ohio | This is a extremely significant and rare example of a bedstead truss bridge, which also features a rare example of a lightweight double-Warren pony truss! | 
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Iroquois 1300 Bridge #1
TR-239A Bridge |
 | Iroquois 1300 Over Spring Creek Tributary | Rural: Iroquois County, Illinois | Metal 4 Panel Pin-Connected Pratt Half-Hip Pony Truss, Fixed |
Total Length: 60.7 ft Main Span Length: 58.7 ft Roadway Width: 16 ft Main Spans: 1 |
1901 By: Unknown | This is one of the more unusual pony truss bridges in Iroquois County. | 
| X |
Iroquois 1300 Bridge #2
TR-146 Bridge |
 | Iroquois 1300 Over Pigeon Creek | Rural (Near Cissna Park): Iroquois County, Illinois | Metal 6 Panel Pin-Connected Pratt Through Truss, Fixed |
Total Length: 100.7 ft Main Span Length: 98.8 ft Roadway Width: 15.7 ft Main Spans: 1 |
1904 By: Massillon Bridge Company of Massillon, Ohio, Darst and Hughes of Chicago, Illinois Agents | A very photogenic, historically intact example of a traditional pin connected Pratt through truss. | 
|
Iroquois 1400 Bridge
TR-156 Bridge |
| Iroquois 1400 Over Whiskey Creek | Rural: Iroquois County, Illinois | Metal 4 Panel Pin-Connected Pratt Half-Hip Pony Truss, Fixed |
Total Length: 55 ft Main Span Length: 52.8 ft Roadway Width: 15.7 ft Main Spans: 1 |
1895 By: Massillon Bridge Company of Massillon, Ohio | A classic half-hip pony truss continues to the present day to fulfill its task of serving traffic in the middle of nowhere. | 
|
Iroquois 1500 Bridge
TR-168 Bridge |
| Iroquois 1500 Over Whiskey Creek | Rural: Iroquois County, Illinois | Metal 4 Panel Rivet-Connected Pratt Full-Slope Pony Truss, Fixed |
Total Length: 77 ft Main Span Length: 70 ft Roadway Width: 16.7 ft Main Spans: 1 |
1929 By: Unknown | This unusual 1920s riveted pony truss has an enormous skew to it! | 
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Iroquois 1650 Bridge
TR-192 Bridge |
| Iroquois 1650 Over Whiskey Creek | Rural: Iroquois County, Illinois | Metal 4 Panel Pin-Connected Pratt Half-Hip Pony Truss, Fixed |
Total Length: 62 ft Main Span Length: 58.7 ft Roadway Width: 15.7 ft Main Spans: 1 |
1896 By: Massillon Bridge Company of Massillon, Ohio | An excellent example of small-scale work by the Massillon Bridge Company of Massillon, Ohio. | 
| X |
Iroquois 1700 Bridge
TR-189 Bridge |
| Iroquois 1700 Over Spring Creek | Rural: Iroquois County, Illinois | Metal 7 Panel Pin-Connected Pratt Through Truss, Fixed |
Total Length: 120.4 ft Main Span Length: 118.4 ft Roadway Width: 16 ft Main Spans: 1 |
1898 By: Unknown | This bridge was closed after someone hit the bridge sending an entire vertical member into the creek and severely damaging another vertical! | 
| ! |
Iroquois 1780 Bridge
TR-212 Bridge |
 | Iroquois 1780 Over Drainage Ditch | Rural: Iroquois County, Illinois | Metal 2 Panel Pin-Connected Pratt Half-Hip Pony Truss, Fixed |
Total Length: 27.2 ft Main Span Length: 26.2 ft Roadway Width: 14 ft Main Spans: 1 |
1910 By: Unknown | This is one of the smallest truss bridges to be found! | 
| X |
Iroquois 1850 Bridge
TR-224 Bridge |
 | Iroquois 1850 Over Pike Creek | Rural: Iroquois County, Illinois | Metal 6 Panel Rivet-Connected Pratt Through Truss, Fixed |
Total Length: 103.4 ft Main Span Length: 100 ft Roadway Width: 18.4 ft Main Spans: 1 |
1916 By: Unknown | One of the newer Iroquois County truss bridges, yet still picturesque. | 
| X |
Iroquois 1900 Bridge #1
TR-159 Bridge |
 | Iroquois 1900 Over Spring Creek | Rural: Iroquois County, Illinois | Metal 7 Panel Rivet-Connected Pratt Through Truss, Fixed |
Total Length: 121.7 ft Main Span Length: 120.4 ft Roadway Width: 17.1 ft Main Spans: 1 |
1916 By: Unknown | This riveted Pratt through truss sits scenically nestled partly in a small wooded area. | 
| X |
Iroquois 1900 Bridge #2
TR-228 Bridge |
| Iroquois 1900 Over Fountain Creek | Rural: Iroquois County, Illinois | Metal 6 Panel Pin-Connected Pratt Through Truss, Fixed |
Total Length: 102 ft Main Span Length: 99.4 ft Roadway Width: 15.7 ft Main Spans: 1 |
1903 By: Massillon Bridge Company of Massillon, Ohio | This was one of the few remaining of what was once many beautiful pin connected through truss bridges in Iroquois County. | 
| X |
Iroquois 200 Bridge
TR-14A Bridge |
| Iroquois 200 Over Louis Creek | Rural: Iroquois County, Illinois | Metal 3 Panel Pin-Connected Pratt Half-Hip Pony Truss, Fixed |
Total Length: 42.7 ft Main Span Length: 41.3 ft Roadway Width: 15.7 ft Main Spans: 1 |
1907 By: Unknown | This was a small Pratt pony truss that in 2006 had recently received a new deck, giving the false impression that it might be preserved. | 
|
Iroquois 2100 Bridge
TR-266 Bridge |
 | Iroquois 2100 Over Sugar Creek | Rural (Near Woodland): Iroquois County, Illinois | Metal 8 Panel Pin-Connected Pratt Through Truss, Fixed |
Total Length: 143 ft Main Span Length: 140 ft Roadway Width: 15.7 ft Main Spans: 1 |
1911 By: Unknown | This impressive Pratt through truss was for many years the longest remaining truss bridge in Iroquois County, and now it is also the last! | 
| X |
Iroquois 2470 Bridge
Wildman's Bridge / TR-324 Bridge |
| Iroquois 2470 Over Sugar Creek | Rural: Iroquois County, Illinois | Metal 6 Panel Pin-Connected Pratt Through Truss, Fixed |
Total Length: 101 ft Main Span Length: 99 ft Roadway Width: 15.7 ft Main Spans: 1 |
1907 By: Unknown | This truss bridge was buried in the trees unlike other Iroquois County truss bridges. | 
|
Iroquois 2800 Bridge
TR-49B Bridge |
| Iroquois 2800 Over Prairie Creek | Rural: Iroquois County, Illinois | Metal 3 Panel Pin-Connected Pratt Bedstead Pony Truss, Fixed |
Total Length: 50.5 ft Main Span Length: 50 ft Roadway Width: 15.7 ft Main Spans: 1 |
1904 By: Unknown | This extremely unusual bridge appears to be a bedstead truss bridge that had its legs removed. | 
| X |
Iroquois 3000 Bridge
TR-434 Bridge |
| Iroquois 3000 Over Mud Creek | Rural: Iroquois County, Illinois | Metal 5 Panel Pin-Connected Pratt Through Truss, Fixed |
Total Length: 71 ft Main Span Length: 69 ft Roadway Width: 13.5 ft Main Spans: 1 |
By: Unknown | This beautiful bridge was one of the most unusual and significant truss bridges in the county with its v-lacing on top of the end posts and cover plate. | 
|
Iroquois 400 Bridge
TR-26A Bridge |
| Iroquois 400 (TR-26A) Over Louis Creek | Rural: Iroquois County, Illinois | Concrete Through Girder, Fixed |
Total Length: 63 ft Main Span Length: 61.4 ft Roadway Width: 18 ft Main Spans: 1 |
1916 By: Joseph Klein of Freeburg, Illinois | One of several very early and long examples in Iroquois County of a standard plan concrete through girder span in Illinois. | 
|
Iroquois 500 Bridge
TR-345A Bridge |
| Iroquois 500 (TR-345A) Over Spring Creek Tributary | Rural: Iroquois County, Illinois | Concrete Through Girder, Fixed |
Total Length: 52.5 ft Main Span Length: 51 ft Roadway Width: 18 ft Main Spans: 3 |
1916 By: Joseph Klein of Freeburg, Illinois | One of several very early examples in Iroquois County of a standard plan concrete through girder span in Illinois. | 
|
Iroquois 600 Bridge
TR-565 Bridge |
| Iroquois 600 (TR-565) Over Spring Creek | Rural: Iroquois County, Illinois | Concrete Through Girder, Fixed |
Total Length: 64 ft Main Span Length: 61.4 ft Roadway Width: 16.4 ft Main Spans: 1 |
1915 By: Unknown | One of several very early and long examples in Iroquois County of a standard plan concrete through girder span in Illinois. | 
| X |
Iroquois 750 Bridge
TR-323 Bridge |
| Iroquois 750 Over Little Mud Creek Tributary | Rural: Iroquois County, Illinois | Metal 3 Panel Pin-Connected Pratt Half-Hip Pony Truss, Fixed |
Total Length: 41.3 ft Main Span Length: 40 ft Roadway Width: 15.7 ft Main Spans: 1 |
1908 By: Unknown | This was an attractive pony truss that could have been rehabilitated to continue to serve the 25 vehicles that crossed it daily. | 
|
Sugar Creek Chapel Bridge
CR-9 Bridge |
 | CR-9 Over Spring Creek Branch | Rural: Iroquois County, Illinois | Metal Braced Ribbed Through Arch, Fixed |
Total Length: 163 ft Main Span Length: 159 ft Roadway Width: 17.4 ft Main Spans: 1 |
1904 By: P. E. Lane of Chicago, Illinois | One of the most unusual bridges in the United States, while at the same time is one of the most visually appealing; built from 1890s roof trusses! | 
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