Nfa 1224 (sa 7315) over I40
Roane County, Tennessee · rated Poor in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Nfa 1224 (sa 7315) over I40 in Roane County, Tennessee, is rated in poor condition in the 2025 National Bridge Inventory (as of ).
- It was built in 1969, making it 56 years old at the 2025 inventory.
- It carries about 1,788 vehicles a day (traffic count year 2021).
- Its listed owner is the state highway agency.
- A poor rating means at least one major component - deck, superstructure, or substructure - is rated 4 or lower on FHWA's 0-9 scale. It does not by itself mean the bridge is unsafe; bridges judged unsafe are closed or load-restricted by their owners.
View this bridge on a map → (35.873, -84.46201)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Deck | 7 | Good condition |
| Superstructure | 4 | Poor condition |
| Substructure | 5 | Fair condition |
Bridge details
| Structure | Continuous concrete tee beam |
| Length | about 213 ft |
| Location | E of Kingston- W of SR 58 |
| NBI structure number | 73I00400019 |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Tennessee department of transportation.
All bridges nearby: Roane County, TN bridge conditions · Tennessee bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.