409th Avenue over Drainage Ditch
FairDavison County, South Dakota · 1.6 S Mitchell · Structure no. 000000018150116
- Built
- 1920
- 105 years old, rebuilt 1968
- Condition
- Fair
- inspected August 2024
- Type
- Culvert
- Concrete Continuous
- Length
- 32 ft
- 2 main spans
- Daily traffic
- 149
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
409th Avenue over Drainage Ditch is a concrete continuous culvert carrying 409th Avenue over Drainage Ditch in Davison County, South Dakota. It was built in 1920 and reconstructed in 1968, so it is 105 years old, older than the South Dakota average of 48.9 years.
The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 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 149 vehicles a day, roughly 2% of them trucks, projected to reach 149 by 2032. The structure is 32 ft (9.8 m) long and 31 ft wide. If it were closed, the detour would be 1.9 mi (3 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Culvert | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was 409th Avenue over Drainage Ditch built?
It was built in 1920, making it 105 years old in 2025. It was reconstructed in 1968.
What condition is 409th Avenue over Drainage Ditch 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 August 2024.
How much traffic does 409th Avenue over Drainage Ditch carry?
About 149 vehicles per day (2022 count), of which roughly 2% are trucks.
How long is 409th Avenue over Drainage Ditch?
The structure is 32 ft (9.8 m) long with a longest span of 10 ft (3 m) and a deck 31 ft wide.
Who owns 409th Avenue over Drainage Ditch?
It is owned by the County Highway Agency.