Nfa 2599 over Muddy Creek
Sullivan County, Tennessee · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Nfa 2599 over Muddy Creek in Sullivan County, Tennessee, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the superstructure, 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 1,927 vehicles a day (traffic count year 2021).
- Its listed owner is the county highway agency.
- It is one of 193 of the 367 inventoried bridges in Sullivan County rated fair (52.6%); 10 (2.7%) 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 February 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 → (36.48117, -82.36472)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 6 | 6 | Satisfactory condition |
| Superstructure | 5 | 5 | Fair condition |
| Substructure | 5 | 5 | Fair condition |
Bridge details
| Structure | Concrete tee beam |
| Length | about 234 ft |
| Location | 2.5 M E of Airport |
| NBI structure number | 820A2210003 |
| Condition class | Fair |
| Traffic status (item 41) | Posted for load |
| Last inspection (item 90) | February 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 Sullivan County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I81 over Nfa B352 | 1968 | 53,763 | Good |
| I81 over Nfa B352 | 1968 | 53,763 | Fair |
| I26 Rt Ln over Nfa 2640 | 1969 | 49,932 | Fair |
| I26 Lt Ln over Nfa 2640 | 1969 | 49,932 | Fair |
| I26 Rt Ln over Rock Springs Rd. | 1968 | 41,117 | Good |
| I181 Rt Ln over Rock Springs Rd. | 1968 | 41,117 | Good |
All bridges nearby: Sullivan County, TN bridge conditions · every bridge in Sullivan County · Tennessee bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.