S-17-74 over Mill Branch
FairDillon County, South Carolina · 3MI SW Lake View · Structure no. 000000000005709
- Built
- 1970
- 55 years old
- Condition
- Fair
- inspected February 2025
- Type
- Slab
- Concrete
- Length
- 45 ft
- 3 main spans
- Daily traffic
- 650
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
S-17-74 over Mill Branch is a concrete slab carrying S-17-74 over Mill Branch in Dillon County, South Carolina. It was built in 1970, so it is 55 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 650 vehicles a day, roughly 5% of them trucks, projected to reach 904 by 2043. The structure is 45 ft (13.7 m) long and 33 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 | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was S-17-74 over Mill Branch built?
It was built in 1970, making it 55 years old in 2025.
What condition is S-17-74 over Mill Branch 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 February 2025.
How much traffic does S-17-74 over Mill Branch carry?
About 650 vehicles per day (2023 count), of which roughly 5% are trucks.
How long is S-17-74 over Mill Branch?
The structure is 45 ft (13.7 m) long with a longest span of 15 ft (4.6 m) and a deck 33 ft wide.
Who owns S-17-74 over Mill Branch?
It is owned by the State Highway Agency.