S-21-604 over Br of Lynches Lake
FairFlorence County, South Carolina · 7 MI SW Johnsonville · Structure no. 000000000003872
- Built
- 1962
- 63 years old, rebuilt 2002
- Condition
- Fair
- inspected April 2024
- Type
- Slab
- Concrete
- Length
- 45 ft
- 3 main spans
- Daily traffic
- 325
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
S-21-604 over Br of Lynches Lake is a concrete slab carrying S-21-604 over Br of Lynches Lake in Florence County, South Carolina. It was built in 1962 and reconstructed in 2002, so it is 63 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 325 vehicles a day, roughly 5% of them trucks, projected to reach 416 by 2043. The structure is 45 ft (13.7 m) long and 28 ft wide.
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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was S-21-604 over Br of Lynches Lake built?
It was built in 1962, making it 63 years old in 2025. It was reconstructed in 2002.
What condition is S-21-604 over Br of Lynches Lake 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 April 2024.
How much traffic does S-21-604 over Br of Lynches Lake carry?
About 325 vehicles per day (2023 count), of which roughly 5% are trucks.
How long is S-21-604 over Br of Lynches Lake?
The structure is 45 ft (13.7 m) long with a longest span of 15 ft (4.6 m) and a deck 28 ft wide.
Who owns S-21-604 over Br of Lynches Lake?
It is owned by the State Highway Agency.