Sc 90 over Tilly Swamp
GoodHorry County, South Carolina · 9.5MI E of Conway · Structure no. 000000000006695
- Built
- 1974
- 51 years old, rebuilt 2000
- Condition
- Good
- inspected September 2024
- Type
- Slab
- Concrete
- Length
- 101 ft
- 4 main spans
- Daily traffic
- 16,500
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
Sc 90 over Tilly Swamp is a concrete slab carrying Sc 90 over Tilly Swamp in Horry County, South Carolina. It was built in 1974 and reconstructed in 2000, so it is 51 years old, older 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 16,500 vehicles a day, roughly 10% of them trucks, projected to reach 16,665 by 2043. The structure is 101 ft (30.8 m) long and 48 ft wide. If it were closed, the detour would be 6.2 mi (10 km).
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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Sc 90 over Tilly Swamp built?
It was built in 1974, making it 51 years old in 2025. It was reconstructed in 2000.
What condition is Sc 90 over Tilly Swamp 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 September 2024.
How much traffic does Sc 90 over Tilly Swamp carry?
About 16,500 vehicles per day (2023 count), of which roughly 10% are trucks.
How long is Sc 90 over Tilly Swamp?
The structure is 101 ft (30.8 m) long with a longest span of 25 ft (7.6 m) and a deck 48 ft wide.
Who owns Sc 90 over Tilly Swamp?
It is owned by the State Highway Agency.