S-26-646 over Mitchell Swamp
FairHorry County, South Carolina · 6MI NW Loris · Structure no. 000000000004820
- Built
- 1966
- 59 years old, rebuilt 1993
- Condition
- Fair
- inspected July 2024
- Type
- Slab
- Concrete
- Length
- 45 ft
- 3 main spans
- Daily traffic
- 250
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
S-26-646 over Mitchell Swamp is a concrete slab carrying S-26-646 over Mitchell Swamp in Horry County, South Carolina. It was built in 1966 and reconstructed in 1993, so it is 59 years old, older 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 250 vehicles a day, roughly 5% of them trucks, projected to reach 320 by 2024. The structure is 45 ft (13.7 m) long and 28 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-26-646 over Mitchell Swamp built?
It was built in 1966, making it 59 years old in 2025. It was reconstructed in 1993.
What condition is S-26-646 over Mitchell Swamp 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 July 2024.
How much traffic does S-26-646 over Mitchell Swamp carry?
About 250 vehicles per day (2023 count), of which roughly 5% are trucks.
How long is S-26-646 over Mitchell Swamp?
The structure is 45 ft (13.7 m) long with a longest span of 15 ft (4.6 m) and a deck 28 ft wide.
Who owns S-26-646 over Mitchell Swamp?
It is owned by the State Highway Agency.