US 178 over I-20
FairLexington County, South Carolina · 8 MI SE of Batesburg · Structure no. 000000000005799
- Built
- 1970
- 55 years old
- Condition
- Fair
- inspected September 2023
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 264 ft
- 4 main spans
- Daily traffic
- 4,900
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
US 178 over I-20 is a steel stringer/multi-beam or girder carrying US 178 over I-20 in Lexington County, South Carolina. It was built in 1970, so it is 55 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 4,900 vehicles a day, roughly 17% of them trucks, projected to reach 7,791 by 2043. The structure is 264 ft (80.5 m) long and 48 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was US 178 over I-20 built?
It was built in 1970, making it 55 years old in 2025.
What condition is US 178 over I-20 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 September 2023.
How much traffic does US 178 over I-20 carry?
About 4,900 vehicles per day (2023 count), of which roughly 17% are trucks.
How long is US 178 over I-20?
The structure is 264 ft (80.5 m) long with a longest span of 87 ft (26.5 m) and a deck 48 ft wide.
Who owns US 178 over I-20?
It is owned by the State Highway Agency.