US 51 (nb)(fap 322 over Coon Creek
De Witt County, Illinois · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- US 51 (nb)(fap 322 over Coon Creek in De Witt County, Illinois, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 6 (satisfactory condition) on the 0-9 scale.
- It was built in 1986, making it 39 years old at the 2025 inventory.
- It carries about 6,950 vehicles a day (traffic count year 2023).
- Its listed owner is the state highway agency.
- It is one of 74 of the 192 inventoried bridges in De Witt County rated fair (38.5%); 11 (5.7%) are rated poor.
- Its traffic status in the 2025 inventory is open, no restriction (NBI item 41).
- Its condition class and component ratings are unchanged from the 2024 inventory.
- Its most recent inspection on record is dated September 2024, on a 24-month routine inspection cycle.
- A fair rating means the lowest-rated major component scores 5 or 6 on FHWA's 0-9 scale: some deterioration or minor section loss, but the structure is sound. It is the middle class, not a warning.
View this bridge on a map → (40.13286, -88.9711)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 6 | 6 | Satisfactory condition |
| Superstructure | 7 | 7 | Good condition |
| Substructure | 6 | 6 | Satisfactory condition |
Bridge details
| Structure | Continuous prestressed concrete stringer or multi-beam girder |
| Length | about 243 ft |
| Location | .5 Mi S of Clinton |
| NBI structure number | 020005600000000 |
| Condition class | Fair |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | September 2024 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | 5: foundations stable, scour within the limits of the footing or piles |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Illinois department of transportation.
Busiest bridges in De Witt County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I-74 over Creek | 1970 | 21,200 | Good |
| I-74 (EB) over Salt Creek | 1970 | 10,750 | Fair |
| I-74 (WB) over Salt Creek | 1970 | 10,750 | Fair |
| I-74 (EB) over US 150 & NS RR(aband) | 1970 | 10,600 | Fair |
| I-74 (WB) over US 150 & NS RR(aband) | 1970 | 10,600 | Fair |
| I-74 (EB) over Fas 2495 | 1970 | 10,600 | Fair |
All bridges nearby: De Witt County, IL bridge conditions · every bridge in De Witt County · Illinois bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.