Nfa 997 (sa 6004) over Bigby Creek
Maury County, Tennessee · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Nfa 997 (sa 6004) over Bigby Creek in Maury 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 1997, making it 28 years old at the 2025 inventory.
- It carries about 437 vehicles a day (traffic count year 2021).
- Its listed owner is the county highway agency.
- It is one of 230 of the 424 inventoried bridges in Maury County rated fair (54.2%); 25 (5.9%) are rated poor.
- Its traffic status in the 2025 inventory is open, no restriction (NBI item 41).
- Its class is unchanged from 2024 (fair), but component ratings moved: superstructure 5 to 7.
- Its most recent inspection on record is dated June 2024, on a 24-month routine inspection cycle.
- 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 → (35.57067, -87.21275)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 8 | 8 | Very good condition |
| Superstructure | 5 | 7 | Good condition |
| Substructure | 5 | 5 | Fair condition |
Bridge details
| Structure | Continuous prestressed concrete single box beam |
| Length | about 164 ft |
| Location | 10.5 M. SW. Columbia. |
| NBI structure number | 60009970003 |
| Condition class | Fair |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | June 2024 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | 4: foundations stable, field review says exposed foundations need protection |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Tennessee department of transportation.
Busiest bridges in Maury County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I65 over Pumpkin Creek | 1963 | 60,646 | Fair |
| I65 over Rutherford Creek | 1961 | 60,646 | Fair |
| I65 over Rutherford Creek | 1961 | 60,646 | Fair |
| I65 over I65 Rl / SR 99 | 2024 | 57,130 | Good |
| I65 over Duck River | 1962 | 52,122 | Fair |
| I65 over Duck River | 1962 | 52,122 | Fair |
All bridges nearby: Maury County, TN bridge conditions · every bridge in Maury County · Tennessee bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.