Nfa A106 over Collins River
Grundy County, Tennessee · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Nfa A106 over Collins River in Grundy 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 1994, making it 31 years old at the 2025 inventory.
- It carries about 50 vehicles a day (traffic count year 2020).
- Its listed owner is the county highway agency.
- It is one of 49 of the 82 inventoried bridges in Grundy County rated fair (59.8%); 0 (0.0%) 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: substructure 7 to 6.
- 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 → (35.39283, -85.56657)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 5 | 5 | Fair condition |
| Superstructure | 6 | 6 | Satisfactory condition |
| Substructure | 7 | 6 | Satisfactory condition |
Bridge details
| Structure | Continuous prestressed concrete single box beam |
| Length | about 89 ft |
| Location | 2.5 M N of Palmer |
| NBI structure number | 310A1060001 |
| 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) | 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 Grundy County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I24 over Patton Creek | 2007 | 43,653 | Fair |
| I24 over Patton Creek | 2007 | 43,653 | Fair |
| I24 over Elk River | 2007 | 43,653 | Fair |
| I24 over Elk River | 2007 | 43,653 | Fair |
| Fas 50 over SR-50 / I-24 | 1958 | 5,966 | Good |
| Fap 50 over Elk River | 1967 | 5,966 | Fair |
All bridges nearby: Grundy County, TN bridge conditions · every bridge in Grundy County · Tennessee bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.