Duluth Highway over Knox Branch
GoodGwinnett County, Georgia · 1 MI SE of Duluth · Structure no. 000000013500220
- Built
- 1939
- 86 years old, rebuilt 1950
- Condition
- Good
- inspected December 2023
- Type
- Culvert
- Concrete
- Length
- 27 ft
- 3 main spans
- Daily traffic
- 15,400
- 2024 count
- Owner
- State
- State Highway Agency
About this bridge
Duluth Highway over Knox Branch is a concrete culvert carrying Duluth Highway over Knox Branch in Gwinnett County, Georgia. It was built in 1939 and reconstructed in 1950, so it is 86 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 15,400 vehicles a day, roughly 1% of them trucks, projected to reach 22,350 by 2032. The structure is 27 ft (8.2 m) long. If it were closed, the detour would be 1.9 mi (3 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Culvert | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Duluth Highway over Knox Branch built?
It was built in 1939, making it 86 years old in 2025. It was reconstructed in 1950.
What condition is Duluth Highway over Knox Branch 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 December 2023.
How much traffic does Duluth Highway over Knox Branch carry?
About 15,400 vehicles per day (2024 count), of which roughly 1% are trucks.
How long is Duluth Highway over Knox Branch?
The structure is 27 ft (8.2 m) long with a longest span of 8 ft (2.4 m).
Who owns Duluth Highway over Knox Branch?
It is owned by the State Highway Agency.