US 78 over Saw Mill Creek
FairDorchester County, South Carolina · At Summerville · Structure no. 000000000003858
- Built
- 1920
- 105 years old, rebuilt 1962
- Condition
- Fair
- inspected April 2024
- Type
- Culvert
- Concrete
- Length
- 23 ft
- 2 main spans
- Daily traffic
- 15,800
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
US 78 over Saw Mill Creek is a concrete culvert carrying US 78 over Saw Mill Creek in Dorchester County, South Carolina. It was built in 1920 and reconstructed in 1962, so it is 105 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 15,800 vehicles a day, roughly 6% of them trucks, projected to reach 22,594 by 2043. The structure is 23 ft (7 m) long and 53 ft wide. If it were closed, the detour would be 1.2 mi (2 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 |
|---|---|---|
| Channel and channel protection | 6 Satisfactory | Structural elements show some minor deterioration. |
| Culvert | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was US 78 over Saw Mill Creek built?
It was built in 1920, making it 105 years old in 2025. It was reconstructed in 1962.
What condition is US 78 over Saw Mill 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 April 2024.
How much traffic does US 78 over Saw Mill Creek carry?
About 15,800 vehicles per day (2023 count), of which roughly 6% are trucks.
How long is US 78 over Saw Mill Creek?
The structure is 23 ft (7 m) long with a longest span of 10 ft (3 m) and a deck 53 ft wide.
Who owns US 78 over Saw Mill Creek?
It is owned by the State Highway Agency.