SD1804 over Cow Ck
GoodSully County, South Dakota · 0.4 N Hughes CO Line · Structure no. 000000060129235
- Built
- 2007
- 18 years old
- Condition
- Good
- inspected January 2024
- Type
- Culvert
- Concrete Continuous
- Length
- 25 ft
- 2 main spans
- Daily traffic
- 632
- 2024 count
- Owner
- State
- State Highway Agency
About this bridge
SD1804 over Cow Ck is a concrete continuous culvert carrying SD1804 over Cow Ck in Sully County, South Dakota. It was built in 2007, so it is 18 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 632 vehicles a day, roughly 15% of them trucks, projected to reach 1,103 by 2044. The structure is 25 ft (7.5 m) long. If it were closed, the detour would be 9.9 mi (16 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 | 9 Excellent | No problems noted. |
| Culvert | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was SD1804 over Cow Ck built?
It was built in 2007, making it 18 years old in 2025.
What condition is SD1804 over Cow Ck 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 January 2024.
How much traffic does SD1804 over Cow Ck carry?
About 632 vehicles per day (2024 count), of which roughly 15% are trucks.
How long is SD1804 over Cow Ck?
The structure is 25 ft (7.5 m) long with a longest span of 12 ft (3.7 m).
Who owns SD1804 over Cow Ck?
It is owned by the State Highway Agency.