SR 21 over Black Creek
GoodChatham County, Georgia · 3 MI N of Port Wentworth · Structure no. 000000005100360
- Built
- 1947
- 78 years old, rebuilt 1989
- Condition
- Good
- inspected July 2024
- Type
- Culvert
- Concrete
- Length
- 21 ft
- 2 main spans
- Daily traffic
- 39,500
- 2024 count
- Owner
- State
- State Highway Agency
About this bridge
SR 21 over Black Creek is a concrete culvert carrying SR 21 over Black Creek in Chatham County, Georgia. It was built in 1947 and reconstructed in 1989, so it is 78 years old, older 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 39,500 vehicles a day, roughly 8% of them trucks, projected to reach 44,700 by 2031. The structure is 21 ft (6.4 m) long. If it were closed, the detour would be 3.7 mi (6 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 |
|---|---|---|
| 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 21 over Black Creek built?
It was built in 1947, making it 78 years old in 2025. It was reconstructed in 1989.
What condition is SR 21 over Black Creek 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 21 over Black Creek carry?
About 39,500 vehicles per day (2024 count), of which roughly 8% are trucks.
How long is SR 21 over Black Creek?
The structure is 21 ft (6.4 m) long with a longest span of 10 ft (3 m).
Who owns SR 21 over Black Creek?
It is owned by the State Highway Agency.