US 17 over Combahee River
FairBeaufort County, South Carolina · Colleton CO LN · Structure no. 000000000000174
- Built
- 2008
- 17 years old
- Condition
- Fair
- inspected September 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete Continuous
- Length
- 840 ft
- 4 main spans
- Daily traffic
- 13,200
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
US 17 over Combahee River is a prestressed concrete continuous stringer/multi-beam or girder carrying US 17 over Combahee River in Beaufort County, South Carolina. It was built in 2008, so it is 17 years old, younger 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 6 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 13,200 vehicles a day, roughly 16% of them trucks, projected to reach 22,968 by 2043. The structure is 840 ft (256 m) long and 82 ft wide.
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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was US 17 over Combahee River built?
It was built in 2008, making it 17 years old in 2025.
What condition is US 17 over Combahee River 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 2024.
How much traffic does US 17 over Combahee River carry?
About 13,200 vehicles per day (2023 count), of which roughly 16% are trucks.
How long is US 17 over Combahee River?
The structure is 840 ft (256 m) long with a longest span of 120 ft (36.6 m) and a deck 82 ft wide.
Who owns US 17 over Combahee River?
It is owned by the State Highway Agency.