Fau 4794 over Mad Branch
Sullivan County, Tennessee · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Fau 4794 over Mad Branch in Sullivan County, Tennessee, is rated in good condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the culvert, rated 7 (good condition) on the 0-9 scale.
- It was built in 1988, making it 37 years old at the 2025 inventory.
- It carries about 1,654 vehicles a day (traffic count year 2022).
- Its listed owner is a city or municipal highway agency.
- It is one of 164 of the 367 inventoried bridges in Sullivan County rated good (44.7%); 10 (2.7%) 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 → (36.55587, -82.4898)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Culvert | 7 | Good condition |
Bridge details
| Structure | Concrete culvert |
| Length | about 34 ft |
| Location | Sussex Drive |
| NBI structure number | 82047940001 |
| Condition class | Good |
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.