Al 21 over Big Swamp Creek Relief
FairLowndes County, Alabama · .3 MI N of County RD.2 · Structure no. 012775
- Built
- 1982
- 43 years old
- Condition
- Fair
- inspected May 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 204 ft
- 6 main spans
- Daily traffic
- 3,930
- 2013 count
- Owner
- State
- State Highway Agency
About this bridge
Al 21 over Big Swamp Creek Relief is a prestressed concrete stringer/multi-beam or girder carrying Al 21 over Big Swamp Creek Relief in Lowndes County, Alabama. It was built in 1982, so it is 43 years old, younger than the Alabama average of 51.1 years.
The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
It carries about 3,930 vehicles a day, roughly 3% of them trucks, projected to reach 4,901 by 2033. The structure is 204 ft (62.2 m) long and 43 ft wide. If it were closed, the detour would be 31.1 mi (50 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Channel and channel protection | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Al 21 over Big Swamp Creek Relief built?
It was built in 1982, making it 43 years old in 2025.
What condition is Al 21 over Big Swamp Creek Relief in?
The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in May 2024.
How much traffic does Al 21 over Big Swamp Creek Relief carry?
About 3,930 vehicles per day (2013 count), of which roughly 3% are trucks.
How long is Al 21 over Big Swamp Creek Relief?
The structure is 204 ft (62.2 m) long with a longest span of 34 ft (10.4 m) and a deck 43 ft wide.
Who owns Al 21 over Big Swamp Creek Relief?
It is owned by the State Highway Agency.