SR-21 over Grog Branch
FairClay County, Florida · SR-21 & CR-220 · Structure no. 710060
- Built
- 1986
- 39 years old
- Condition
- Fair
- inspected March 2024
- Type
- Culvert
- Concrete
- Length
- 21 ft
- 2 main spans
- Daily traffic
- 36,500
- 2022 count
- Owner
- State
- State Highway Agency
About this bridge
SR-21 over Grog Branch is a concrete culvert carrying SR-21 over Grog Branch in Clay County, Florida. It was built in 1986, so it is 39 years old, younger than the Florida average of 41.3 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 36,500 vehicles a day, roughly 6% of them trucks, projected to reach 63,328 by 2044. The structure is 21 ft (6.4 m) long. If it were closed, the detour would be 19.3 mi (31 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 |
|---|---|---|
| Channel and channel protection | 7 Good | Some minor problems. |
| Culvert | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was SR-21 over Grog Branch built?
It was built in 1986, making it 39 years old in 2025.
What condition is SR-21 over Grog Branch 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 SR-21 over Grog Branch carry?
About 36,500 vehicles per day (2022 count), of which roughly 6% are trucks.
How long is SR-21 over Grog Branch?
The structure is 21 ft (6.4 m) long with a longest span of 10 ft (3 m).
Who owns SR-21 over Grog Branch?
It is owned by the State Highway Agency.