SD020 over Sumner Slough
GoodCodington County, South Dakota · 1 MI S. & 1 E. Florence · Structure no. 000000015093077
- Built
- 2003
- 22 years old
- Condition
- Good
- inspected May 2023
- Type
- Culvert
- Concrete Continuous
- Length
- 22 ft
- 2 main spans
- Daily traffic
- 1,876
- 2024 count
- Owner
- State
- State Highway Agency
About this bridge
SD020 over Sumner Slough is a concrete continuous culvert carrying SD020 over Sumner Slough in Codington County, South Dakota. It was built in 2003, so it is 22 years old, younger than the South Dakota average of 48.9 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 1,876 vehicles a day, roughly 14% of them trucks, projected to reach 2,640 by 2044. The structure is 22 ft (6.7 m) long. If it were closed, the detour would be 3.1 mi (5 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 | 8 Very Good | No problems noted. |
| Culvert | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was SD020 over Sumner Slough built?
It was built in 2003, making it 22 years old in 2025.
What condition is SD020 over Sumner Slough 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 May 2023.
How much traffic does SD020 over Sumner Slough carry?
About 1,876 vehicles per day (2024 count), of which roughly 14% are trucks.
How long is SD020 over Sumner Slough?
The structure is 22 ft (6.7 m) long with a longest span of 10 ft (3 m).
Who owns SD020 over Sumner Slough?
It is owned by the State Highway Agency.