Nfa A378 over Elk River
Grundy County, Tennessee · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Nfa A378 over Elk River in Grundy County, Tennessee, is rated in good condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 7 (good condition) on the 0-9 scale.
- It was built in 1989, making it 36 years old at the 2025 inventory.
- It carries about 150 vehicles a day (traffic count year 2020).
- Its listed owner is the county highway agency.
- It is one of 33 of the 82 inventoried bridges in Grundy County rated good (40.2%); 0 (0.0%) are rated poor.
- A good rating means every major component - deck, superstructure, substructure, or culvert - is rated 7 or higher on FHWA's 0-9 scale: no more than minor problems.
View this bridge on a map → (35.31324, -85.85201)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Deck | 7 | Good condition |
| Superstructure | 7 | Good condition |
| Substructure | 7 | Good condition |
Bridge details
| Structure | Continuous prestressed concrete stringer or multi-beam girder |
| Length | about 130 ft |
| Location | 3.5 M North of Mounteagle |
| NBI structure number | 310A3780001 |
| Condition class | Good |
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.