I40 349207A over CSX RR & County Road
Smith County, Tennessee · rated Poor in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- I40 349207A over CSX RR & County Road in Smith County, Tennessee, is rated in poor condition in the 2025 National Bridge Inventory (as of ).
- It was built in 1962 and reconstructed in 1985, making it 63 years old at the 2025 inventory.
- It carries about 44,898 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 → (36.17725, -85.93585)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Deck | 7 | Good condition |
| Superstructure | 7 | Good condition |
| Substructure | 4 | Poor condition |
Bridge details
| Structure | Prestressed concrete multiple box beam |
| Length | about 224 ft |
| Location | In Smith Co |
| NBI structure number | 80I00400018 |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Tennessee department of transportation.
All bridges nearby: Smith County, TN bridge conditions · Tennessee bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.