S-21-105 over Buck Branch
GoodFlorence County, South Carolina · 1MI N Hyman · Structure no. 000000000005288
- Built
- 2006
- 19 years old
- Condition
- Good
- inspected March 2024
- Type
- Slab
- Prestressed Concrete
- Length
- 40 ft
- 1 main span
- Daily traffic
- 650
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
S-21-105 over Buck Branch is a prestressed concrete slab carrying S-21-105 over Buck Branch in Florence County, South Carolina. It was built in 2006, so it is 19 years old, younger than the South Carolina average of 48 years.
The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 650 vehicles a day, roughly 14% of them trucks, projected to reach 949 by 2043. The structure is 40 ft (12.2 m) long and 36 ft wide. If it were closed, the detour would be 1.9 mi (3 km).
Location
Open in Google MapsCondition and inspection
All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 8 Very Good | No problems noted. |
| Superstructure | 9 Excellent | No problems noted. |
| Substructure | 9 Excellent | No problems noted. |
| Channel and channel protection | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was S-21-105 over Buck Branch built?
It was built in 2006, making it 19 years old in 2025.
What condition is S-21-105 over Buck Branch in?
The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in March 2024.
How much traffic does S-21-105 over Buck Branch carry?
About 650 vehicles per day (2023 count), of which roughly 14% are trucks.
How long is S-21-105 over Buck Branch?
The structure is 40 ft (12.2 m) long with a longest span of 40 ft (12.2 m) and a deck 36 ft wide.
Who owns S-21-105 over Buck Branch?
It is owned by the State Highway Agency.