S-25-20 over Mill Bay Creek
FairHampton County, South Carolina · 8MI SW Estill · Structure no. 000000000001826
- Built
- 1951
- 74 years old
- Condition
- Fair
- inspected March 2023
- Type
- Slab
- Concrete
- Length
- 70 ft
- 5 main spans
- Daily traffic
- 75
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
S-25-20 over Mill Bay Creek is a concrete slab carrying S-25-20 over Mill Bay Creek in Hampton County, South Carolina. It was built in 1951, so it is 74 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 75 vehicles a day, roughly 11% of them trucks, projected to reach 104 by 2043. The structure is 70 ft (21.3 m) long and 26 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Superstructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| 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-25-20 over Mill Bay Creek built?
It was built in 1951, making it 74 years old in 2025.
What condition is S-25-20 over Mill Bay 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 March 2023.
How much traffic does S-25-20 over Mill Bay Creek carry?
About 75 vehicles per day (2023 count), of which roughly 11% are trucks.
How long is S-25-20 over Mill Bay Creek?
The structure is 70 ft (21.3 m) long with a longest span of 14 ft (4.3 m) and a deck 26 ft wide.
Who owns S-25-20 over Mill Bay Creek?
It is owned by the State Highway Agency.