Nfa A447 over Cosby Creek
PoorCocke County, Tennessee · 2 MI NW of Cosby · Structure no. 150A4470001
- Built
- 1983
- 42 years old
- Condition
- Poor
- inspected September 2024
- Type
- Box Beam or Girders - Single or Spread
- Prestressed Concrete Continuous
- Length
- 81 ft
- 3 main spans
- Daily traffic
- 180
- 2020 count
- Owner
- County
- County Highway Agency
About this bridge
Nfa A447 over Cosby Creek is a prestressed concrete continuous box beam or girders - single or spread carrying Nfa A447 over Cosby Creek in Cocke County, Tennessee. It was built in 1983, so it is 42 years old, younger than the Tennessee average of 47.4 years.
The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
It carries about 180 vehicles a day, roughly 2% of them trucks, projected to reach 288 by 2042. The structure is 81 ft (24.7 m) long and 24 ft wide. If it were closed, the detour would be 1.9 mi (3 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Channel and channel protection | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Nfa A447 over Cosby Creek built?
It was built in 1983, making it 42 years old in 2025.
What condition is Nfa A447 over Cosby Creek in?
The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in September 2024.
How much traffic does Nfa A447 over Cosby Creek carry?
About 180 vehicles per day (2020 count), of which roughly 2% are trucks.
How long is Nfa A447 over Cosby Creek?
The structure is 81 ft (24.7 m) long with a longest span of 27 ft (8.3 m) and a deck 24 ft wide.
Who owns Nfa A447 over Cosby Creek?
It is owned by the County Highway Agency.