S-4-1170 over I-85
FairAnderson County, South Carolina · 16.6 MI NW of Anderson · Structure no. 000000000003818
- Built
- 1962
- 63 years old
- Condition
- Fair
- inspected December 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 255 ft
- 4 main spans
- Daily traffic
- 250
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
S-4-1170 over I-85 is a prestressed concrete stringer/multi-beam or girder carrying S-4-1170 over I-85 in Anderson County, South Carolina. It was built in 1962, so it is 63 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 250 vehicles a day, roughly 5% of them trucks, projected to reach 320 by 2043. The structure is 255 ft (77.7 m) long and 30 ft wide. If it were closed, the detour would be 6.2 mi (10 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was S-4-1170 over I-85 built?
It was built in 1962, making it 63 years old in 2025.
What condition is S-4-1170 over I-85 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 December 2024.
How much traffic does S-4-1170 over I-85 carry?
About 250 vehicles per day (2023 count), of which roughly 5% are trucks.
How long is S-4-1170 over I-85?
The structure is 255 ft (77.7 m) long with a longest span of 65 ft (19.8 m) and a deck 30 ft wide.
Who owns S-4-1170 over I-85?
It is owned by the State Highway Agency.