Nfa 815 (sa 9220) over North Fork Obion River
Weakley County, Tennessee · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Nfa 815 (sa 9220) over North Fork Obion River in Weakley County, Tennessee, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the substructure, rated 5 (fair condition) on the 0-9 scale.
- It was built in 1956, making it 69 years old at the 2025 inventory.
- It carries about 272 vehicles a day (traffic count year 2021).
- Its listed owner is the county highway agency.
- It is one of 221 of the 351 inventoried bridges in Weakley County rated fair (63.0%); 5 (1.4%) are rated poor.
- Its traffic status in the 2025 inventory is open, no restriction (NBI item 41).
- It was rated poor in the 2024 inventory and is now fair (substructure 4 to 5).
- Its most recent inspection on record is dated September 2024, on a 24-month routine inspection cycle.
- It is coded scour critical (NBI item 113 = 2): scour critical: extensive scour observed, foundations unstable.
- 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 → (36.40609, -88.79042)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 6 | 6 | Satisfactory condition |
| Superstructure | 6 | 6 | Satisfactory condition |
| Substructure | 4 | 5 | Fair condition |
Bridge details
| Structure | Concrete tee beam |
| Length | about 452 ft |
| Location | 4 Mi E of Obion Co Line |
| NBI structure number | 92S80110007 |
| Condition class | Fair |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | September 2024 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | 2: scour critical: extensive scour observed, foundations unstable |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Tennessee department of transportation.
Busiest bridges in Weakley County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Fau 5732 over Branch | 1979 | 11,958 | Fair |
| Fap 22 (rt Ln) over Mud Creek | 1961 | 11,265 | Fair |
| Fap 22 (lt Ln) over Mud Creek | 1984 | 11,265 | Good |
| Fap 22 (rt. Ln.) over Chestnut Branch | 1961 | 11,265 | Fair |
| Fap 22 (lt Ln) over Chestnut Branch | 1984 | 11,265 | Fair |
| Fau 5732 over Cane Creek | 1979 | 9,379 | Fair |
All bridges nearby: Weakley County, TN bridge conditions · every bridge in Weakley County · Tennessee bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.