US-421 over Muncy Creek
Leslie County, Kentucky · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- US-421 over Muncy Creek in Leslie County, Kentucky, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the culvert, rated 5 (fair condition) on the 0-9 scale.
- It was built in 1938, making it 87 years old at the 2025 inventory.
- It carries about 2,823 vehicles a day (traffic count year 2022).
- Its listed owner is the state highway agency.
- It is one of 65 of the 112 inventoried bridges in Leslie County rated fair (58.0%); 13 (11.6%) 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 → (37.11278, -83.38056)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Culvert | 5 | Fair condition |
Bridge details
| Structure | Concrete culvert |
| Length | about 26 ft |
| Location | 2.0 Mi Nor. of Jct Ky 406 |
| NBI structure number | 066B00007N |
| Condition class | Fair |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Kentucky department of transportation.
Busiest bridges in Leslie County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Hr-9006 over Bull Creek | 1974 | 5,196 | Fair |
| Hr-9006 over Sugar Camp Br Rd | 1974 | 5,196 | Fair |
| Hr-9006 over Bull Creek | 1973 | 5,196 | Fair |
| Hr-9006 over Bull Creek | 1973 | 5,196 | Fair |
| Hr-9006 over Ky257-mdfk Ky Rvr-ky3425 | 1973 | 5,196 | Fair |
| Ky-118 over Rockhouse Creek | 1974 | 3,744 | Fair |
All bridges nearby: Leslie County, KY bridge conditions · every bridge in Leslie County · Kentucky bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.