Nfa A609 over Big Rock Creek
Marshall County, Tennessee · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Nfa A609 over Big Rock Creek in Marshall County, Tennessee, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 5 (fair condition) on the 0-9 scale.
- It was built in 1965, making it 60 years old at the 2025 inventory.
- It carries about 2,370 vehicles a day (traffic count year 2020).
- Its listed owner is a city or municipal highway agency.
- It is one of 106 of the 240 inventoried bridges in Marshall County rated fair (44.2%); 0 (0.0%) are rated poor.
- Its traffic status in the 2025 inventory is posted for load (NBI item 41).
- Its condition class and component ratings are unchanged from the 2024 inventory.
- Its most recent inspection on record is dated August 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 → (35.44984, -86.78619)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 5 | 5 | Fair condition |
| Superstructure | 5 | 5 | Fair condition |
| Substructure | 7 | 7 | Good condition |
Bridge details
| Structure | Continuous concrete tee beam |
| Length | about 120 ft |
| Location | In Downtown Lewisburg |
| NBI structure number | 59M34450001 |
| Condition class | Fair |
| Traffic status (item 41) | Posted for load |
| Last inspection (item 90) | August 2024 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | 8: foundations stable, scour above the top of the footing |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Tennessee department of transportation.
Busiest bridges in Marshall County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I65 over SR373 & E. Fk. Globe CR. | 1964 | 32,079 | Fair |
| I65 over I65 Ll / SR 373 & Creek | 1964 | 32,079 | Fair |
| I65 over I65 NB Ramp / Branch | 1964 | 32,079 | Good |
| I65 over I65 SB Ramp / Branch | 1964 | 32,079 | Good |
| I65 over Richland Creek | 1964 | 30,471 | Good |
| I65 over Richland Creek | 1964 | 30,471 | Good |
All bridges nearby: Marshall County, TN bridge conditions · every bridge in Marshall County · Tennessee bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.