Nfa A417 (sa 1101) over Rock Branch
Cheatham County, Tennessee · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Nfa A417 (sa 1101) over Rock Branch in Cheatham County, Tennessee, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the culvert, rated 6 (satisfactory condition) on the 0-9 scale.
- It was built in 1976, making it 49 years old at the 2025 inventory.
- It carries about 1,090 vehicles a day (traffic count year 2020).
- Its listed owner is the county highway agency.
- It is one of 65 of the 127 inventoried bridges in Cheatham County rated fair (51.2%); 4 (3.1%) 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 → (36.09583, -87.15157)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Culvert | 6 | Satisfactory condition |
Bridge details
| Structure | Continuous concrete culvert |
| Length | about 21 ft |
| Location | 2 Mi NW of I40 |
| NBI structure number | 11S61520007 |
| Condition class | Fair |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Tennessee department of transportation.
Busiest bridges in Cheatham County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I24 over 124 Rl/ Ridge Road | 1973 | 75,818 | Fair |
| I24 over I24 Ll/ Ridge Road | 1973 | 75,818 | Good |
| I40 over Harpeth River | 1960 | 53,557 | Fair |
| I40 over Harpeth River | 1960 | 53,557 | Fair |
| I40 over Harpeth River | 2016 | 53,557 | Good |
| Fap 12 over Marrow Bone Creek | 1996 | 15,685 | Good |
All bridges nearby: Cheatham County, TN bridge conditions · every bridge in Cheatham County · Tennessee bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.