Boone Road over Trib. to Ky. River
Carroll County, Kentucky · rated Poor in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Boone Road over Trib. to Ky. River in Carroll County, Kentucky, is rated in poor condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the substructure, rated 4 (poor condition) on the 0-9 scale.
- It was built in 1968, making it 57 years old at the 2025 inventory.
- It carries about 208 vehicles a day (traffic count year 2006).
- Its listed owner is the county highway agency.
- It is one of 8 of the 68 inventoried bridges in Carroll County rated poor (11.8%); 8 (11.8%) 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 February 2023, on a 24-month routine inspection cycle.
- 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 → (38.66611, -85.10972)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 6 | 6 | Satisfactory condition |
| Superstructure | 6 | 6 | Satisfactory condition |
| Substructure | 4 | 4 | Poor condition |
Bridge details
| Structure | Prestressed concrete multiple box beam |
| Length | about 25 ft |
| Location | 1MI SE of W-jct Ky 36 |
| NBI structure number | 021C00006N |
| Condition class | Poor |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | February 2023 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | 4: foundations stable, field review says exposed foundations need protection |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Kentucky department of transportation.
Busiest bridges in Carroll County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I-71 over Green Bottom Road | 1967 | 41,258 | Fair |
| I-71 over Kentucky River | 1967 | 20,629 | Fair |
| I-71 over Kentucky River | 1967 | 20,629 | Fair |
| I-71 over Ky 1112 & Whites Run Crk | 1967 | 17,812 | Poor |
| I-71 over Ky 1112 & Whites Run Crk | 1967 | 17,812 | Fair |
| I-71 over CSX RR & Ky 227 | 1967 | 17,812 | Fair |
All bridges nearby: Carroll County, KY bridge conditions · every bridge in Carroll County · Kentucky bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.