SD1804 over Dry Ck
GoodCharles Mix County, South Dakota · 7.1 S JCT Sd 44 & 50 · Structure no. 000000012170132
- Built
- 1970
- 55 years old
- Condition
- Good
- inspected July 2024
- Type
- Slab
- Concrete Continuous
- Length
- 117 ft
- 5 main spans
- Daily traffic
- 126
- 2024 count
- Owner
- State
- State Highway Agency
About this bridge
SD1804 over Dry Ck is a concrete continuous slab carrying SD1804 over Dry Ck in Charles Mix County, South Dakota. It was built in 1970, so it is 55 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 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 126 vehicles a day, roughly 6% of them trucks, projected to reach 182 by 2044. The structure is 117 ft (35.7 m) long and 35 ft wide.
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 |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 7 Good | Some minor problems. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was SD1804 over Dry Ck built?
It was built in 1970, making it 55 years old in 2025.
What condition is SD1804 over Dry 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 July 2024.
How much traffic does SD1804 over Dry Ck carry?
About 126 vehicles per day (2024 count), of which roughly 6% are trucks.
How long is SD1804 over Dry Ck?
The structure is 117 ft (35.7 m) long with a longest span of 23 ft (7.1 m) and a deck 35 ft wide.
Who owns SD1804 over Dry Ck?
It is owned by the State Highway Agency.