S-21-112 over I-20
FairFlorence County, South Carolina · 2MI W Florence · Structure no. 000000000005056
- Built
- 1967
- 58 years old
- Condition
- Fair
- inspected March 2023
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 450 ft
- 6 main spans
- Daily traffic
- 8,300
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
S-21-112 over I-20 is a steel stringer/multi-beam or girder carrying S-21-112 over I-20 in Florence County, South Carolina. It was built in 1967, so it is 58 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 8,300 vehicles a day, roughly 3% of them trucks, projected to reach 4,980 by 2043. The structure is 450 ft (137.2 m) long and 38 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 | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was S-21-112 over I-20 built?
It was built in 1967, making it 58 years old in 2025.
What condition is S-21-112 over I-20 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 March 2023.
How much traffic does S-21-112 over I-20 carry?
About 8,300 vehicles per day (2023 count), of which roughly 3% are trucks.
How long is S-21-112 over I-20?
The structure is 450 ft (137.2 m) long with a longest span of 82 ft (25 m) and a deck 38 ft wide.
Who owns S-21-112 over I-20?
It is owned by the State Highway Agency.