Sc 277 SB over I-20
FairRichland County, South Carolina · 6 MI NE of Cola · Structure no. 000000000006573
- Built
- 1974
- 51 years old
- Condition
- Fair
- inspected February 2024
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 368 ft
- 4 main spans
- Daily traffic
- 26,700
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
Sc 277 SB over I-20 is a steel continuous stringer/multi-beam or girder carrying Sc 277 SB over I-20 in Richland County, South Carolina. It was built in 1974, so it is 51 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 26,700 vehicles a day, roughly 2% of them trucks, projected to reach 62,745 by 2043. The structure is 368 ft (112.2 m) long and 43 ft wide.
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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Sc 277 SB over I-20 built?
It was built in 1974, making it 51 years old in 2025.
What condition is Sc 277 SB 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 February 2024.
How much traffic does Sc 277 SB over I-20 carry?
About 26,700 vehicles per day (2023 count), of which roughly 2% are trucks.
How long is Sc 277 SB over I-20?
The structure is 368 ft (112.2 m) long with a longest span of 118 ft (36 m) and a deck 43 ft wide.
Who owns Sc 277 SB over I-20?
It is owned by the State Highway Agency.