US 17 Alt over Combahee Swamp #2
FairHampton County, South Carolina · 1.5 MI NE Yemassee · Structure no. 000000000001059
- Built
- 1940
- 85 years old
- Condition
- Fair
- inspected March 2024
- Type
- Tee Beam
- Concrete
- Length
- 240 ft
- 8 main spans
- Daily traffic
- 1,800
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
US 17 Alt over Combahee Swamp #2 is a concrete tee beam carrying US 17 Alt over Combahee Swamp #2 in Hampton County, South Carolina. It was built in 1940, so it is 85 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 1,800 vehicles a day, roughly 12% of them trucks, projected to reach 2,862 by 2043. The structure is 240 ft (73.2 m) long and 26 ft wide. If it were closed, the detour would be 5 mi (8 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 | 7 Good | Some minor problems. |
| Superstructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was US 17 Alt over Combahee Swamp #2 built?
It was built in 1940, making it 85 years old in 2025.
What condition is US 17 Alt over Combahee Swamp #2 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 March 2024.
How much traffic does US 17 Alt over Combahee Swamp #2 carry?
About 1,800 vehicles per day (2023 count), of which roughly 12% are trucks.
How long is US 17 Alt over Combahee Swamp #2?
The structure is 240 ft (73.2 m) long with a longest span of 30 ft (9.1 m) and a deck 26 ft wide.
Who owns US 17 Alt over Combahee Swamp #2?
It is owned by the State Highway Agency.