US 378 over Twelve Mile Creek
FairLexington County, South Carolina · 3MI NE of Lex · Structure no. 000000000001202
- Built
- 1941
- 84 years old, rebuilt 1977
- Condition
- Fair
- inspected October 2024
- Type
- Tee Beam
- Concrete
- Length
- 150 ft
- 5 main spans
- Daily traffic
- 33,000
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
US 378 over Twelve Mile Creek is a concrete tee beam carrying US 378 over Twelve Mile Creek in Lexington County, South Carolina. It was built in 1941 and reconstructed in 1977, so it is 84 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 33,000 vehicles a day, roughly 2% of them trucks, projected to reach 51,810 by 2043. The structure is 150 ft (45.7 m) long and 76 ft wide. If it were closed, the detour would be 1.2 mi (2 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 | 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was US 378 over Twelve Mile Creek built?
It was built in 1941, making it 84 years old in 2025. It was reconstructed in 1977.
What condition is US 378 over Twelve Mile Creek 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 October 2024.
How much traffic does US 378 over Twelve Mile Creek carry?
About 33,000 vehicles per day (2023 count), of which roughly 2% are trucks.
How long is US 378 over Twelve Mile Creek?
The structure is 150 ft (45.7 m) long with a longest span of 30 ft (9.1 m) and a deck 76 ft wide.
Who owns US 378 over Twelve Mile Creek?
It is owned by the State Highway Agency.