S-34-309 over Mill Creek
FairMarion County, South Carolina · 3MI SW Nichols · Structure no. 000000000002394
- Built
- 1956
- 69 years old
- Condition
- Fair
- inspected June 2023
- Type
- Slab
- Concrete
- Length
- 57 ft
- 4 main spans
- Daily traffic
- 550
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
S-34-309 over Mill Creek is a concrete slab carrying S-34-309 over Mill Creek in Marion County, South Carolina. It was built in 1956, so it is 69 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 550 vehicles a day, roughly 9% of them trucks, projected to reach 803 by 2043. The structure is 57 ft (17.4 m) long and 26 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 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was S-34-309 over Mill Creek built?
It was built in 1956, making it 69 years old in 2025.
What condition is S-34-309 over 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 June 2023.
How much traffic does S-34-309 over Mill Creek carry?
About 550 vehicles per day (2023 count), of which roughly 9% are trucks.
How long is S-34-309 over Mill Creek?
The structure is 57 ft (17.4 m) long with a longest span of 15 ft (4.6 m) and a deck 26 ft wide.
Who owns S-34-309 over Mill Creek?
It is owned by the State Highway Agency.