US 51 (fap 322) over Louse Creek
Marion County, Illinois · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- US 51 (fap 322) over Louse Creek in Marion County, Illinois, is rated in good condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the culvert, rated 7 (good condition) on the 0-9 scale.
- It was built in 1959, making it 66 years old at the 2025 inventory.
- It carries about 2,250 vehicles a day (traffic count year 2023).
- Its listed owner is the state highway agency.
- It is one of 182 of the 294 inventoried bridges in Marion County rated good (61.9%); 22 (7.5%) 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 January 2023, on a 24-month routine inspection cycle.
- A good rating means every major component - deck, superstructure, substructure, or culvert - is rated 7 or higher on FHWA's 0-9 scale: no more than minor problems.
View this bridge on a map → (38.74059, -89.09555)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Culvert | 7 | 7 | Good condition |
Bridge details
| Structure | Continuous concrete culvert |
| Length | about 26 ft |
| Location | 5.8 Mi S Fayette C L |
| NBI structure number | 061200200000000 |
| Condition class | Good |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | January 2023 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | 8: foundations stable, scour above the top of the footing |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Illinois department of transportation.
Busiest bridges in Marion County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Fai-57 over Raccoon Creek | 1966 | 21,000 | Good |
| Fai-57 over Br E Fork Kaskaskia | 1970 | 18,100 | Good |
| Fai-57 over S Trib E Br Kask Rvr | 1969 | 18,100 | Good |
| Fai-57 over N Trib E Br Kask Rvr | 1969 | 18,100 | Good |
| US 50 over Vermillion Creek | 1994 | 10,300 | Good |
| Fai-57 NB over Crooked Creek | 1968 | 9,650 | Poor |
All bridges nearby: Marion County, IL bridge conditions · every bridge in Marion County · Illinois bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.