I81 over Flat Creek
Hamblen County, Tennessee · rated Poor in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- I81 over Flat Creek in Hamblen County, Tennessee, is rated in poor condition in the 2025 National Bridge Inventory (as of ).
- It was built in 1970, making it 55 years old at the 2025 inventory.
- It carries about 45,697 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 → (36.1695, -83.21565)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Culvert | 3 | Serious condition |
Bridge details
| Structure | Continuous concrete culvert |
| Length | about 22 ft |
| Location | 4.70M.FROM Jefferson Co.l |
| NBI structure number | 32I00810019 |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Tennessee department of transportation.
All bridges nearby: Hamblen County, TN bridge conditions · Tennessee bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.