S-34-744 over Brown Swamp Trio
FairMarion County, South Carolina · 1.5 MI S Mullins · Structure no. 000000000007393
- Built
- 1980
- 45 years old
- Condition
- Fair
- inspected June 2023
- Type
- Slab
- Concrete
- Length
- 30 ft
- 2 main spans
- Daily traffic
- 225
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
S-34-744 over Brown Swamp Trio is a concrete slab carrying S-34-744 over Brown Swamp Trio in Marion County, South Carolina. It was built in 1980, so it is 45 years old, younger than the South Carolina average of 48 years.
The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 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 225 vehicles a day, roughly 5% of them trucks, projected to reach 288 by 2043. The structure is 30 ft (9.1 m) long and 33 ft wide. If it were closed, the detour would be 3.1 mi (5 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was S-34-744 over Brown Swamp Trio built?
It was built in 1980, making it 45 years old in 2025.
What condition is S-34-744 over Brown Swamp Trio 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 June 2023.
How much traffic does S-34-744 over Brown Swamp Trio carry?
About 225 vehicles per day (2023 count), of which roughly 5% are trucks.
How long is S-34-744 over Brown Swamp Trio?
The structure is 30 ft (9.1 m) long with a longest span of 15 ft (4.6 m) and a deck 33 ft wide.
Who owns S-34-744 over Brown Swamp Trio?
It is owned by the State Highway Agency.