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| Key Facts |
| Bridge Name | Facility Carried / Feature Intersected | Location | Structure Type | Construction Date and Builder/Engineer | |
|---|---|---|---|---|---|
| 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 | 1908 By Builder/Contractor: Unknown |
| Technical Facts |
| Main Span Length | Structure Length | Roadway Width | Main Spans | NBI Number |
| 40 Feet (12.2 Meters) | 41.3 Feet (12.6 Meters) | 15.7 Feet (4.8 Meters) | 1 | 38303809202 |
This was a small three panel pin connected half-hip Pratt pony truss. It featured v-lacing on the verticals. The eye bars were of the loop-forged variety. The deck was wood. The bridge was in decent condition, but it had one serious but easily fixed issue. One of the top chord pins lost the nut on the outside end of the pin, and the pin had slipped inside the top chord. The pin sat sticking partially out on the road side of the truss, while the other end rests on the inside of the top chord, barely continuing to hold its diagonal. This was a serious problem that compromised the bridge's ability to carry loads. However, the fix would have been extremely simple. All someone needed to do was to push the pin back through and put a nut back on it. Rather than buy a nut, and perhaps make a few more minor repairs to keep this bridge able to serve the 25-60 vehicles that crossed it each day, Iroquois County went overkill and spent considerable tax dollars to completely destroy and replace this beautiful historic bridge with an ugly slab of concrete.
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