S-31-220 over I-20
FairLee County, South Carolina · 8 MI W of Bishopville · Structure no. 000000000006154
- Built
- 1972
- 53 years old
- Condition
- Fair
- inspected August 2023
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 246 ft
- 4 main spans
- Daily traffic
- 200
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
S-31-220 over I-20 is a steel stringer/multi-beam or girder carrying S-31-220 over I-20 in Lee County, South Carolina. It was built in 1972, so it is 53 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 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 200 vehicles a day, roughly 5% of them trucks, projected to reach 256 by 2043. The structure is 246 ft (75 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 | 7 Good | Some minor problems. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 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 S-31-220 over I-20 built?
It was built in 1972, making it 53 years old in 2025.
What condition is S-31-220 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 August 2023.
How much traffic does S-31-220 over I-20 carry?
About 200 vehicles per day (2023 count), of which roughly 5% are trucks.
How long is S-31-220 over I-20?
The structure is 246 ft (75 m) long with a longest span of 86 ft (26.2 m) and a deck 38 ft wide.
Who owns S-31-220 over I-20?
It is owned by the State Highway Agency.