US 278 EB over Palmetto Lagoon
GoodBeaufort County, South Carolina · Hilton Head Island · Structure no. 000000000007069
- Built
- 1978
- 47 years old
- Condition
- Good
- inspected July 2024
- Type
- Slab
- Concrete
- Length
- 132 ft
- 6 main spans
- Daily traffic
- 13,600
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
US 278 EB over Palmetto Lagoon is a concrete slab carrying US 278 EB over Palmetto Lagoon in Beaufort County, South Carolina. It was built in 1978, so it is 47 years old, younger than the South Carolina average of 48 years.
The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 13,600 vehicles a day, roughly 3% of them trucks, projected to reach 16,320 by 2043. The structure is 132 ft (40.2 m) long and 43 ft wide.
Location
Open in Google MapsCondition and inspection
All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 7 Good | Some minor problems. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was US 278 EB over Palmetto Lagoon built?
It was built in 1978, making it 47 years old in 2025.
What condition is US 278 EB over Palmetto Lagoon in?
The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in July 2024.
How much traffic does US 278 EB over Palmetto Lagoon carry?
About 13,600 vehicles per day (2023 count), of which roughly 3% are trucks.
How long is US 278 EB over Palmetto Lagoon?
The structure is 132 ft (40.2 m) long with a longest span of 22 ft (6.7 m) and a deck 43 ft wide.
Who owns US 278 EB over Palmetto Lagoon?
It is owned by the State Highway Agency.