US 401 over Lynches River
FairDarlington County, South Carolina · 5.0 MI SW of Lamar · Structure no. 000000000002166
- Built
- 1955
- 70 years old
- Condition
- Fair
- inspected January 2024
- Type
- Tee Beam
- Concrete
- Length
- 1,080 ft
- 36 main spans
- Daily traffic
- 1,400
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
US 401 over Lynches River is a concrete tee beam carrying US 401 over Lynches River in Darlington County, South Carolina. It was built in 1955, so it is 70 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 1,400 vehicles a day, roughly 14% of them trucks, projected to reach 2,226 by 2043. The structure is 1,080 ft (329.2 m) long and 31 ft wide. If it were closed, the detour would be 13 mi (21 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 US 401 over Lynches River built?
It was built in 1955, making it 70 years old in 2025.
What condition is US 401 over Lynches River 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 January 2024.
How much traffic does US 401 over Lynches River carry?
About 1,400 vehicles per day (2023 count), of which roughly 14% are trucks.
How long is US 401 over Lynches River?
The structure is 1,080 ft (329.2 m) long with a longest span of 30 ft (9.1 m) and a deck 31 ft wide.
Who owns US 401 over Lynches River?
It is owned by the State Highway Agency.