US 52/US 17 Alt over Cooper River
PoorBerkeley County, South Carolina · 1 MI N of Moncks Corner · Structure no. 000000000001287
- Built
- 1944
- 81 years old, rebuilt 1976
- Condition
- Poor
- inspected September 2023
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 766 ft
- 7 main spans
- Daily traffic
- 29,000
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
US 52/US 17 Alt over Cooper River is a steel continuous stringer/multi-beam or girder carrying US 52/US 17 Alt over Cooper River in Berkeley County, South Carolina. It was built in 1944 and reconstructed in 1976, so it is 81 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 4 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.
It carries about 29,000 vehicles a day, roughly 5% of them trucks, projected to reach 50,460 by 2043. The structure is 766 ft (233.5 m) long and 76 ft wide. If it were closed, the detour would be 49.1 mi (79 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Superstructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Substructure | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| 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 52/US 17 Alt over Cooper River built?
It was built in 1944, making it 81 years old in 2025. It was reconstructed in 1976.
What condition is US 52/US 17 Alt over Cooper River 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 September 2023.
How much traffic does US 52/US 17 Alt over Cooper River carry?
About 29,000 vehicles per day (2023 count), of which roughly 5% are trucks.
How long is US 52/US 17 Alt over Cooper River?
The structure is 766 ft (233.5 m) long with a longest span of 140 ft (42.7 m) and a deck 76 ft wide.
Who owns US 52/US 17 Alt over Cooper River?
It is owned by the State Highway Agency.