S-1178 over U.S. 29
PoorAnderson County, South Carolina · 3.0 MI NW Williamston · Structure no. 000000000002468
- Built
- 1957
- 68 years old
- Condition
- Poor
- inspected August 2024
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 220 ft
- 4 main spans
- Daily traffic
- 175
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
S-1178 over U.S. 29 is a steel stringer/multi-beam or girder carrying S-1178 over U.S. 29 in Anderson County, South Carolina. It was built in 1957, so it is 68 years old, older than the South Carolina average of 48 years.
The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
It carries about 175 vehicles a day, roughly 5% of them trucks, projected to reach 224 by 2043. The structure is 220 ft (67.1 m) long and 31 ft wide. If it were closed, the detour would be 1.9 mi (3 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Substructure | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was S-1178 over U.S. 29 built?
It was built in 1957, making it 68 years old in 2025.
What condition is S-1178 over U.S. 29 in?
The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in August 2024.
How much traffic does S-1178 over U.S. 29 carry?
About 175 vehicles per day (2023 count), of which roughly 5% are trucks.
How long is S-1178 over U.S. 29?
The structure is 220 ft (67.1 m) long with a longest span of 55 ft (16.8 m) and a deck 31 ft wide.
Who owns S-1178 over U.S. 29?
It is owned by the State Highway Agency.