Fas 145 over Mcknight Branch
Cannon County, Tennessee · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Fas 145 over Mcknight Branch in Cannon County, Tennessee, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the culvert, rated 6 (satisfactory condition) on the 0-9 scale.
- It was built in 1952, making it 73 years old at the 2025 inventory.
- It carries about 945 vehicles a day (traffic count year 2021).
- Its listed owner is the state highway agency.
- It is one of 72 of the 159 inventoried bridges in Cannon County rated fair (45.3%); 16 (10.1%) are rated poor.
- 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 → (35.91535, -86.10325)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Culvert | 6 | Satisfactory condition |
Bridge details
| Structure | Concrete culvert |
| Length | about 21 ft |
| Location | 2 Mi.s.of Auburntown |
| NBI structure number | 08SR1450009 |
| Condition class | Fair |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Tennessee department of transportation.
Busiest bridges in Cannon County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Fap 1 over East Fork Stones River | 1924 | 14,614 | Poor |
| Fap 1 over Carson Fork Creek | 1987 | 12,928 | Fair |
| Fap 1 over Carson Fork Creek | 1987 | 12,928 | Fair |
| Fap 1 over Hill Creek | 2013 | 12,903 | Good |
| Fap 1 over Small Branch | 1988 | 12,579 | Fair |
| Fap 1 over East Fork Stones River | 1987 | 12,579 | Good |
All bridges nearby: Cannon County, TN bridge conditions · every bridge in Cannon County · Tennessee bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.