S-45-639 over Birch Creek
FairWilliamsburg County, South Carolina · 2.5 MI N Warsaw · Structure no. 000000000006389
- Built
- 1973
- 52 years old, rebuilt 1994
- Condition
- Fair
- inspected August 2023
- Type
- Slab
- Concrete
- Length
- 60 ft
- 4 main spans
- Daily traffic
- 275
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
S-45-639 over Birch Creek is a concrete slab carrying S-45-639 over Birch Creek in Williamsburg County, South Carolina. It was built in 1973 and reconstructed in 1994, so it is 52 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 275 vehicles a day, roughly 5% of them trucks, projected to reach 352 by 2043. The structure is 60 ft (18.3 m) long and 28 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was S-45-639 over Birch Creek built?
It was built in 1973, making it 52 years old in 2025. It was reconstructed in 1994.
What condition is S-45-639 over Birch 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 August 2023.
How much traffic does S-45-639 over Birch Creek carry?
About 275 vehicles per day (2023 count), of which roughly 5% are trucks.
How long is S-45-639 over Birch Creek?
The structure is 60 ft (18.3 m) long with a longest span of 15 ft (4.6 m) and a deck 28 ft wide.
Who owns S-45-639 over Birch Creek?
It is owned by the State Highway Agency.