|
Key Facts |
Bridge Name | Type | Road | Location | City | Crossing |
| Iroquois 1780 Bridge |
Truss |
Iroquois 1780 |
Iroquois County, IL |
Rural |
Local Drain |
|
Technical Facts |
|
Construction Date |
Structure Length | Roadway Width |
| 1910 | 27 Feet | 14 Feet |
This is one of the smallest truss bridges I have ever seen, similar to the Bach Driveway Bridges in Michigan. This bridge is not even quite twice as long as its narrow one-lane width! The bridge is a two panel pin connected half-hip Pratt pony truss. There is lattice on the vertical member of the trusses. The end post appears to have been damaged. Likely some idiot driver or snowplow creamed it like the 1700 Bridge. Fortunately, the end posts was repaired and the bridge continues to be in service. 1910 is a given date for the construction of the bridge, which is plausible, although still I wonder if this date might be incorrect. Rivet-connected truss bridges were becoming more dominant by 1910, and actually I suspect the steel mills were rolling beams long enough for this crossing to be a steel stringer by 1910.
