Griffin Road over Spell Swamp
GoodNassau County, Florida · 1.8M E of Mussel White RD · Structure no. 744314
- Built
- 2004
- 21 years old
- Condition
- Good
- inspected June 2024
- Type
- Slab
- Concrete Continuous
- Length
- 100 ft
- 3 main spans
- Daily traffic
- 1,400
- 2024 count
- Owner
- County
- County Highway Agency
About this bridge
Griffin Road over Spell Swamp is a concrete continuous slab carrying Griffin Road over Spell Swamp in Nassau County, Florida. It was built in 2004, so it is 21 years old, younger than the Florida average of 41.3 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 1,400 vehicles a day, roughly 5% of them trucks, projected to reach 2,429 by 2046. The structure is 100 ft (30.5 m) long and 37 ft wide. If it were closed, the detour would be 6.8 mi (11 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 | 8 Very Good | No problems noted. |
| Channel and channel protection | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Griffin Road over Spell Swamp built?
It was built in 2004, making it 21 years old in 2025.
What condition is Griffin Road over Spell 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 June 2024.
How much traffic does Griffin Road over Spell Swamp carry?
About 1,400 vehicles per day (2024 count), of which roughly 5% are trucks.
How long is Griffin Road over Spell Swamp?
The structure is 100 ft (30.5 m) long with a longest span of 40 ft (12.2 m) and a deck 37 ft wide.
Who owns Griffin Road over Spell Swamp?
It is owned by the County Highway Agency.