US 21 over Congaree Creek
PoorPosted for loadLexington County, South Carolina · 5 MI SW of Columbia · Structure no. 000000000000885
- Built
- 1922
- 103 years old, rebuilt 2009
- Condition
- Poor
- inspected October 2023
- Type
- Tee Beam
- Concrete
- Length
- 88 ft
- 4 main spans
- Daily traffic
- 23,200
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
US 21 over Congaree Creek is a concrete tee beam carrying US 21 over Congaree Creek in Lexington County, South Carolina. It was built in 1922 and reconstructed in 2009, so it is 103 years old, older than the South Carolina average of 48 years.
The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 3 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: posted for load restriction.
It carries about 23,200 vehicles a day, roughly 5% of them trucks, projected to reach 36,424 by 2043. The structure is 88 ft (26.8 m) long and 102 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 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 3 Serious | Loss of section, deterioration, spalling or scour have seriously affected primary structural components. |
| Channel and channel protection | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was US 21 over Congaree Creek built?
It was built in 1922, making it 103 years old in 2025. It was reconstructed in 2009.
What condition is US 21 over Congaree Creek in?
The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in October 2023.
How much traffic does US 21 over Congaree Creek carry?
About 23,200 vehicles per day (2023 count), of which roughly 5% are trucks.
How long is US 21 over Congaree Creek?
The structure is 88 ft (26.8 m) long with a longest span of 22 ft (6.7 m) and a deck 102 ft wide.
Who owns US 21 over Congaree Creek?
It is owned by the State Highway Agency.