Ky-378 over Negro Branch
Breathitt County, Kentucky · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Ky-378 over Negro Branch in Breathitt County, Kentucky, is rated in good condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the culvert, rated 7 (good condition) on the 0-9 scale.
- It was built in 1953, making it 72 years old at the 2025 inventory.
- It carries about 180 vehicles a day (traffic count year 2022).
- Its listed owner is the state highway agency.
- It is one of 58 of the 125 inventoried bridges in Breathitt County rated good (46.4%); 7 (5.6%) are rated poor.
- Its traffic status in the 2025 inventory is posted for load (NBI item 41).
- Its condition class and component ratings are unchanged from the 2024 inventory.
- Its most recent inspection on record is dated February 2024, on a 24-month routine inspection cycle.
- A good rating means every major component - deck, superstructure, substructure, or culvert - is rated 7 or higher on FHWA's 0-9 scale: no more than minor problems.
View this bridge on a map → (37.64361, -83.33083)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Culvert | 7 | 7 | Good condition |
Bridge details
| Structure | Concrete culvert |
| Length | about 26 ft |
| Location | 1.2 Mi East of Jct Ky 394 |
| NBI structure number | 013B00049N |
| Condition class | Good |
| Traffic status (item 41) | Posted for load |
| Last inspection (item 90) | February 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 Breathitt County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Ky-15 over Quicksand Creek | 1964 | 7,640 | Fair |
| Ky-15 over Lost Creek | 1966 | 5,200 | Good |
| Ky-15 over Lost Creek | 1966 | 5,200 | Good |
| Ky-15 over Cockrell Fork | 1966 | 5,200 | Good |
| Ky-15 over Lost Creek | 1966 | 5,200 | Good |
| Ky-30 over CSX RR - N Fork Ky River | 1977 | 4,950 | Fair |
All bridges nearby: Breathitt County, KY bridge conditions · every bridge in Breathitt County · Kentucky bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.