I-20 over High Tower Branch
FairAiken County, South Carolina · 5 MI N of Burnettown · Structure no. 000000000004688
- Built
- 1966
- 59 years old
- Condition
- Fair
- inspected February 2024
- Type
- Culvert
- Concrete Continuous
- Length
- 21 ft
- 2 main spans
- Daily traffic
- 44,500
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
I-20 over High Tower Branch is a concrete continuous culvert carrying I-20 over High Tower Branch in Aiken County, South Carolina. It was built in 1966, so it is 59 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 44,500 vehicles a day, roughly 22% of them trucks, projected to reach 54,735 by 2043. The structure is 21 ft (6.5 m) long and 402 ft wide. If it were closed, the detour would be 8.7 mi (14 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 |
|---|---|---|
| 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 High Tower Branch built?
It was built in 1966, making it 59 years old in 2025.
What condition is I-20 over High Tower 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 February 2024.
How much traffic does I-20 over High Tower Branch carry?
About 44,500 vehicles per day (2023 count), of which roughly 22% are trucks.
How long is I-20 over High Tower Branch?
The structure is 21 ft (6.5 m) long with a longest span of 10 ft (3 m) and a deck 402 ft wide.
Who owns I-20 over High Tower Branch?
It is owned by the State Highway Agency.