Powder Horn Branch over Mill Creek
Clay County, Kentucky · rated Poor in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Powder Horn Branch over Mill Creek in Clay County, Kentucky, is rated in poor condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 3 (serious condition) on the 0-9 scale.
- It was built in 1960, making it 65 years old at the 2025 inventory.
- It carries about 21 vehicles a day (traffic count year 2006).
- Its listed owner is the county highway agency.
- It is one of 23 of the 165 inventoried bridges in Clay County rated poor (13.9%); 23 (13.9%) are rated poor.
- Its traffic status in the 2025 inventory is posted for load (NBI item 41).
- Its class is unchanged from 2024 (poor), but component ratings moved: superstructure 6 to 5.
- Its most recent inspection on record is dated December 2024, on a 12-month routine inspection cycle.
- It has fracture-critical members (NBI item 92A): steel tension members without a redundant load path, which get their own scheduled inspections.
- A poor rating means at least one major component - deck, superstructure, or substructure - is rated 4 or lower on FHWA's 0-9 scale. It does not by itself mean the bridge is unsafe; bridges judged unsafe are closed or load-restricted by their owners.
View this bridge on a map → (37.00667, -83.65556)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 3 | 3 | Serious condition |
| Superstructure | 6 | 5 | Fair condition |
| Substructure | 5 | 5 | Fair condition |
Bridge details
| Structure | Continuous steel stringer or multi-beam girder |
| Length | about 41 ft |
| Location | .05 Mi SE of Jct CR 5154 |
| NBI structure number | 026C00029N |
| Condition class | Poor |
| Traffic status (item 41) | Posted for load |
| Last inspection (item 90) | December 2024 |
| Inspection interval (item 91) | 12 months |
| Scour (item 113) | 8: foundations stable, scour above the top of the footing |
| Fracture critical (item 92A) | Yes |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Kentucky department of transportation.
Busiest bridges in Clay County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| US-421 over Little Goose Creek | 1993 | 13,190 | Fair |
| Ky-80 over Hal Rogers Parkway | 1971 | 11,538 | Fair |
| US-421 over Goose Creek | 1983 | 8,691 | Fair |
| Hr-9006 over LITTLE GOOSE CRK & R | 1970 | 8,477 | Fair |
| Hr-9006 over Cheek Rd | 1970 | 8,477 | Fair |
| Hr-9006 over Urban Road | 1970 | 8,477 | Fair |
All bridges nearby: Clay County, KY bridge conditions · every bridge in Clay County · Kentucky bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.