Nfa A633 over Doe River
Carter County, Tennessee · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Nfa A633 over Doe River in Carter 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 1987, making it 38 years old at the 2025 inventory.
- It carries about 140 vehicles a day (traffic count year 2020).
- Its listed owner is the county highway agency.
- It is one of 81 of the 194 inventoried bridges in Carter County rated good (41.8%); 27 (13.9%) are rated poor.
- Its traffic status in the 2025 inventory is open, no restriction (NBI item 41).
- Its condition class and component ratings are unchanged from the 2024 inventory.
- Its most recent inspection on record is dated July 2023, on a 24-month routine inspection cycle.
- 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 → (36.22328, -82.1371)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 7 | 7 | Good condition |
| Superstructure | 7 | 7 | Good condition |
| Substructure | 8 | 8 | Very good condition |
Bridge details
| Structure | Prestressed concrete stringer or multi-beam girder |
| Length | about 183 ft |
| Location | N of Sr37-e of SR173 Jct. |
| NBI structure number | 100A6330001 |
| Condition class | Good |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | July 2023 |
| 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 Carter County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Fau 67 841452G over Pedestrian Walkway | 1984 | 27,889 | Fair |
| Fau 67 over US-321 / Happy Valley Rd | 1986 | 24,080 | Fair |
| Fau 67 over US-321 / Happy Valley Rd | 1986 | 24,080 | Good |
| Fau 67 over US-321 / Sparks Rd | 1986 | 24,080 | Good |
| Fau 67 over US-321 / Sparks Rd | 1986 | 24,080 | Good |
| Fau 67 over SR-359 & Buffalo Creek | 1986 | 24,080 | Fair |
All bridges nearby: Carter County, TN bridge conditions · every bridge in Carter County · Tennessee bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.