Nfa A161 over West Blackburn Fork
Putnam County, Tennessee · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Nfa A161 over West Blackburn Fork in Putnam 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 1984, making it 41 years old at the 2025 inventory.
- It carries about 220 vehicles a day (traffic count year 2020).
- Its listed owner is the county highway agency.
- It is one of 15 of the 167 inventoried bridges in Putnam County rated good (9.0%); 3 (1.8%) 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 → (36.18928, -85.58501)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Culvert | 7 | Good condition |
Bridge details
| Structure | Continuous concrete culvert |
| Length | about 24 ft |
| Location | 3MI From SR 56 |
| NBI structure number | 710A1610001 |
| Condition class | Good |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Tennessee department of transportation.
Busiest bridges in Putnam County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I40 over SR 136 | 1960 | 56,102 | Fair |
| I40 over SR 136 | 1960 | 56,102 | Fair |
| I40 over Cane Creek | 1960 | 53,413 | Fair |
| I40 over Cane Creek | 1960 | 53,413 | Fair |
| I40 over Maxwell Branch | 1961 | 51,443 | Fair |
| I40 over I-40 EB / Elmore Town Rd | 1960 | 48,916 | Fair |
All bridges nearby: Putnam County, TN bridge conditions · every bridge in Putnam County · Tennessee bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.