Rocky Knob Branch over Mudlick Creek
Johnson County, Kentucky · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Rocky Knob Branch over Mudlick Creek in Johnson 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 1986, making it 39 years old at the 2025 inventory.
- It carries about 257 vehicles a day (traffic count year 2011).
- Its listed owner is the county highway agency.
- It is one of 70 of the 99 inventoried bridges in Johnson County rated fair (70.7%); 3 (3.0%) are rated poor.
- 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 → (37.84694, -82.85889)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Deck | 6 | Satisfactory condition |
| Superstructure | 6 | Satisfactory condition |
| Substructure | 7 | Good condition |
Bridge details
| Structure | Prestressed concrete multiple box beam |
| Length | about 50 ft |
| Location | @ JCT of KY 172 |
| NBI structure number | 058C00029N |
| Condition class | Fair |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Kentucky department of transportation.
Busiest bridges in Johnson County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Ky-321 over Paint Creek | 1987 | 12,825 | Fair |
| US23N Ramp toUS460 over Paint Creek | 1996 | 8,436 | Fair |
| US460 toUS23S Ramp over Paint Creek | 1996 | 8,436 | Fair |
| Ky-40 over Mudlick Creek | 1983 | 7,801 | Fair |
| Ky-40 over Levisa Fork | 1958 | 7,395 | Fair |
| Ky-321 over Ky-1428 | 1960 | 5,797 | Fair |
All bridges nearby: Johnson County, KY bridge conditions · every bridge in Johnson County · Kentucky bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.