Nfa A378 over Salt Lick Creek
Macon County, Tennessee · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Nfa A378 over Salt Lick Creek in Macon County, Tennessee, 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 1983, making it 42 years old at the 2025 inventory.
- It carries about 50 vehicles a day (traffic count year 2020).
- Its listed owner is the county highway agency.
- It is one of 119 of the 169 inventoried bridges in Macon County rated good (70.4%); 8 (4.7%) are rated poor.
- 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 → (36.5024, -85.84707)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Culvert | 7 | Good condition |
Bridge details
| Structure | Continuous concrete culvert |
| Length | about 38 ft |
| Location | 2 M S Red Boiling Springs |
| NBI structure number | 560A3780001 |
| Condition class | Good |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Tennessee department of transportation.
Busiest bridges in Macon County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Fap 52 over Trammel Creek | 1992 | 8,950 | Good |
| Fap 52 over Long Hungry Creek | 1972 | 4,936 | Good |
| Fap 52 over Branch | 1970 | 4,936 | Good |
| Fap 52 over Long Fork Creek | 1995 | 4,936 | Good |
| Fap 52 over Branch | 1995 | 4,936 | Good |
| Fap 10 over Dry Branch | 1942 | 4,889 | Fair |
All bridges nearby: Macon County, TN bridge conditions · every bridge in Macon County · Tennessee bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.