S-12-609 over I-77
GoodChester County, South Carolina · I-77 & 12-609 · Structure no. 000000000007224
- Built
- 1979
- 46 years old
- Condition
- Good
- inspected March 2023
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 327 ft
- 4 main spans
- Daily traffic
- 150
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
S-12-609 over I-77 is a steel stringer/multi-beam or girder carrying S-12-609 over I-77 in Chester County, South Carolina. It was built in 1979, so it is 46 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 150 vehicles a day, roughly 5% of them trucks, projected to reach 192 by 2043. The structure is 327 ft (99.7 m) long and 37 ft wide. If it were closed, the detour would be 9.9 mi (16 km).
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 | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was S-12-609 over I-77 built?
It was built in 1979, making it 46 years old in 2025.
What condition is S-12-609 over I-77 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 March 2023.
How much traffic does S-12-609 over I-77 carry?
About 150 vehicles per day (2023 count), of which roughly 5% are trucks.
How long is S-12-609 over I-77?
The structure is 327 ft (99.7 m) long with a longest span of 103 ft (31.4 m) and a deck 37 ft wide.
Who owns S-12-609 over I-77?
It is owned by the State Highway Agency.