SR 21R B-On Ramp over Dundee Canal
GoodChatham County, Georgia · City of Garden City · Structure no. 000000005100390
- Built
- 1979
- 46 years old
- Condition
- Good
- inspected July 2024
- Type
- Culvert
- Concrete
- Length
- 35 ft
- 3 main spans
- Daily traffic
- 3,590
- 2024 count
- Owner
- State
- State Highway Agency
About this bridge
SR 21R B-On Ramp over Dundee Canal is a concrete culvert carrying SR 21R B-On Ramp over Dundee Canal in Chatham County, Georgia. It was built in 1979, so it is 46 years old, younger than the Georgia average of 47.5 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 3,590 vehicles a day, roughly 1% of them trucks, projected to reach 5,460 by 2031. The structure is 35 ft (10.7 m) long.
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 |
|---|---|---|
| Channel and channel protection | 7 Good | Some minor problems. |
| Culvert | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was SR 21R B-On Ramp over Dundee Canal built?
It was built in 1979, making it 46 years old in 2025.
What condition is SR 21R B-On Ramp over Dundee Canal 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 SR 21R B-On Ramp over Dundee Canal carry?
About 3,590 vehicles per day (2024 count), of which roughly 1% are trucks.
How long is SR 21R B-On Ramp over Dundee Canal?
The structure is 35 ft (10.7 m) long with a longest span of 11 ft (3.4 m).
Who owns SR 21R B-On Ramp over Dundee Canal?
It is owned by the State Highway Agency.