S-4-29 over Three & Twenty Creek
FairAnderson County, South Carolina · 10.2MI NW Anderson · Structure no. 000000000005460
- Built
- 1969
- 56 years old
- Condition
- Fair
- inspected December 2024
- Type
- Tee Beam
- Concrete
- Length
- 200 ft
- 6 main spans
- Daily traffic
- 5,000
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
S-4-29 over Three & Twenty Creek is a concrete tee beam carrying S-4-29 over Three & Twenty Creek in Anderson County, South Carolina. It was built in 1969, so it is 56 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 5,000 vehicles a day, roughly 5% of them trucks, projected to reach 6,150 by 2043. The structure is 200 ft (61 m) long and 33 ft wide. If it were closed, the detour would be 3.7 mi (6 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 | 7 Good | Some minor problems. |
| Substructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was S-4-29 over Three & Twenty Creek built?
It was built in 1969, making it 56 years old in 2025.
What condition is S-4-29 over Three & Twenty Creek 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-4-29 over Three & Twenty Creek carry?
About 5,000 vehicles per day (2023 count), of which roughly 5% are trucks.
How long is S-4-29 over Three & Twenty Creek?
The structure is 200 ft (61 m) long with a longest span of 40 ft (12.2 m) and a deck 33 ft wide.
Who owns S-4-29 over Three & Twenty Creek?
It is owned by the State Highway Agency.