S-21-646 over Lane Branch
GoodFlorence County, South Carolina · Town of Coward · Structure no. 000000000009170
- Built
- 1997
- 28 years old
- Condition
- Good
- inspected March 2024
- Type
- Slab
- Concrete Continuous
- Length
- 66 ft
- 3 main spans
- Daily traffic
- 125
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
S-21-646 over Lane Branch is a concrete continuous slab carrying S-21-646 over Lane Branch in Florence County, South Carolina. It was built in 1997, so it is 28 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 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 125 vehicles a day, roughly 13% of them trucks, projected to reach 160 by 2043. The structure is 66 ft (20.1 m) long and 36 ft wide. If it were closed, the detour would be 1.2 mi (2 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 | 7 Good | Some minor problems. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 8 Very Good | No problems noted. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was S-21-646 over Lane Branch built?
It was built in 1997, making it 28 years old in 2025.
What condition is S-21-646 over Lane 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-21-646 over Lane Branch carry?
About 125 vehicles per day (2023 count), of which roughly 13% are trucks.
How long is S-21-646 over Lane Branch?
The structure is 66 ft (20.1 m) long with a longest span of 22 ft (6.7 m) and a deck 36 ft wide.
Who owns S-21-646 over Lane Branch?
It is owned by the State Highway Agency.