I-20 over Jacks Branch
FairDarlington County, South Carolina · 5 MI NE Lamar · Structure no. 000000000006460
- Built
- 1974
- 51 years old
- Condition
- Fair
- inspected January 2024
- Type
- Culvert
- Concrete Continuous
- Length
- 21 ft
- 2 main spans
- Daily traffic
- 30,400
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
I-20 over Jacks Branch is a concrete continuous culvert carrying I-20 over Jacks Branch in Darlington County, South Carolina. It was built in 1974, so it is 51 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 30,400 vehicles a day, roughly 16% of them trucks, projected to reach 22,800 by 2043. The structure is 21 ft (6.4 m) long and 277 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 |
|---|---|---|
| Channel and channel protection | 7 Good | Some minor problems. |
| Culvert | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was I-20 over Jacks Branch built?
It was built in 1974, making it 51 years old in 2025.
What condition is I-20 over Jacks 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 January 2024.
How much traffic does I-20 over Jacks Branch carry?
About 30,400 vehicles per day (2023 count), of which roughly 16% are trucks.
How long is I-20 over Jacks Branch?
The structure is 21 ft (6.4 m) long with a longest span of 10 ft (3 m) and a deck 277 ft wide.
Who owns I-20 over Jacks Branch?
It is owned by the State Highway Agency.