Nfa 821 (sa 4930) over Overflow
PoorLauderdale County, Tennessee · Near Halls · Structure no. 49F00110011
- Built
- 1960
- 65 years old
- Condition
- Poor
- inspected December 2023
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 121 ft
- 4 main spans
- Daily traffic
- 225
- 2021 count
- Owner
- County
- County Highway Agency
About this bridge
Nfa 821 (sa 4930) over Overflow is a steel continuous stringer/multi-beam or girder carrying Nfa 821 (sa 4930) over Overflow in Lauderdale County, Tennessee. It was built in 1960, so it is 65 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: open, temporary structure in place while original is closed.
It carries about 225 vehicles a day, roughly 3% of them trucks, projected to reach 360 by 2042. The structure is 121 ft (36.9 m) long and 26 ft wide. If it were closed, the detour would be 18 mi (29 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 2 Critical | Advanced deterioration of primary structural elements. Bridge may be closed until corrective action is taken. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Nfa 821 (sa 4930) over Overflow built?
It was built in 1960, making it 65 years old in 2025.
What condition is Nfa 821 (sa 4930) over Overflow 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 December 2023.
How much traffic does Nfa 821 (sa 4930) over Overflow carry?
About 225 vehicles per day (2021 count), of which roughly 3% are trucks.
How long is Nfa 821 (sa 4930) over Overflow?
The structure is 121 ft (36.9 m) long with a longest span of 31 ft (9.4 m) and a deck 26 ft wide.
Who owns Nfa 821 (sa 4930) over Overflow?
It is owned by the County Highway Agency.