Nfa A317 347891F over CSX Railroad
PoorClosed to trafficPolk County, Tennessee · 3.4 MI SW JCT SR30&SR33 · Structure no. 700A3170003
- Built
- 1913
- 112 years old, rebuilt 1988
- Condition
- Poor
- inspected June 2024
- Type
- Stringer/Multi-beam or Girder
- Wood or Timber
- Length
- 118 ft
- 6 main spans
- Daily traffic
- 40
- 2020 count
- Owner
- County
- County Highway Agency
About this bridge
Nfa A317 347891F over CSX Railroad is a wood or timber stringer/multi-beam or girder carrying Nfa A317 347891F over CSX Railroad in Polk County, Tennessee. It was built in 1913 and reconstructed in 1988, so it is 112 years old, older 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 2 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. Its operating status is: closed to all traffic.
It carries about 40 vehicles a day, roughly 2% of them trucks, projected to reach 64 by 2042. The structure is 118 ft (36 m) long and 17 ft wide. If it were closed, the detour would be 5 mi (8 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 | 2 Critical | Advanced deterioration of primary structural elements. Bridge may be closed until corrective action is taken. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Nfa A317 347891F over CSX Railroad built?
It was built in 1913, making it 112 years old in 2025. It was reconstructed in 1988.
What condition is Nfa A317 347891F over CSX Railroad 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 June 2024.
How much traffic does Nfa A317 347891F over CSX Railroad carry?
About 40 vehicles per day (2020 count), of which roughly 2% are trucks.
How long is Nfa A317 347891F over CSX Railroad?
The structure is 118 ft (36 m) long with a longest span of 31 ft (9.4 m) and a deck 17 ft wide.
Who owns Nfa A317 347891F over CSX Railroad?
It is owned by the County Highway Agency.