Ky-525 over Grisby Creek
Trigg County, Kentucky · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Ky-525 over Grisby Creek in Trigg County, Kentucky, 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 1982, making it 43 years old at the 2025 inventory.
- It carries about 570 vehicles a day (traffic count year 2018).
- Its listed owner is the state highway agency.
- It is one of 54 of the 108 inventoried bridges in Trigg County rated fair (50.0%); 9 (8.3%) are rated poor.
- Its traffic status in the 2025 inventory is posted for load (NBI item 41).
- Its class is unchanged from 2024 (fair), but component ratings moved: superstructure 7 to 6.
- Its most recent inspection on record is dated June 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 → (36.79444, -87.77111)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 6 | 6 | Satisfactory condition |
| Superstructure | 7 | 6 | Satisfactory condition |
| Substructure | 6 | 6 | Satisfactory condition |
Bridge details
| Structure | Prestressed concrete multiple box beam |
| Length | about 44 ft |
| Location | 3.3 Mi. East-jct.ky 139 |
| NBI structure number | 111B00053N |
| Condition class | Fair |
| Traffic status (item 41) | Posted for load |
| Last inspection (item 90) | June 2024 |
| 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 Kentucky department of transportation.
Busiest bridges in Trigg County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I-24-10 Nc over Muddy Fork Creek | 1977 | 12,822 | Fair |
| I-24 over Muddy Fork Creek | 1977 | 12,822 | Fair |
| I-24-10 Nc over Trw Railroad | 1973 | 11,546 | Good |
| I-24 over Trw Railroad | 1973 | 11,546 | Good |
| I-24-10 Nc over US 68 | 1974 | 11,546 | Good |
| I-24 over US 68 | 1974 | 11,546 | Good |
All bridges nearby: Trigg County, KY bridge conditions · every bridge in Trigg County · Kentucky bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.