I-77 SB over Sc 12
GoodRichland County, South Carolina · 2 MI SE of Dentsville · Structure no. 000000000008913
- Built
- 1995
- 30 years old
- Condition
- Good
- inspected January 2024
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 329 ft
- 2 main spans
- Daily traffic
- 47,200
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
I-77 SB over Sc 12 is a steel continuous stringer/multi-beam or girder carrying I-77 SB over Sc 12 in Richland County, South Carolina. It was built in 1995, so it is 30 years old, younger than the South Carolina average of 48 years.
The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 47,200 vehicles a day, roughly 16% of them trucks, projected to reach 58,528 by 2043. The structure is 329 ft (100.3 m) long and 67 ft wide.
Location
Open in Google MapsCondition and inspection
All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was I-77 SB over Sc 12 built?
It was built in 1995, making it 30 years old in 2025.
What condition is I-77 SB over Sc 12 in?
The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in January 2024.
How much traffic does I-77 SB over Sc 12 carry?
About 47,200 vehicles per day (2023 count), of which roughly 16% are trucks.
How long is I-77 SB over Sc 12?
The structure is 329 ft (100.3 m) long with a longest span of 181 ft (55.2 m) and a deck 67 ft wide.
Who owns I-77 SB over Sc 12?
It is owned by the State Highway Agency.