SD251 over Masdon Ck
GoodGregory County, South Dakota · 5.1 S JCT US 18 · Structure no. 000000027050241
- Built
- 1996
- 29 years old
- Condition
- Good
- inspected July 2022
- Type
- Culvert
- Concrete Continuous
- Length
- 25 ft
- 2 main spans
- Daily traffic
- 400
- 2024 count
- Owner
- State
- State Highway Agency
About this bridge
SD251 over Masdon Ck is a concrete continuous culvert carrying SD251 over Masdon Ck in Gregory County, South Dakota. It was built in 1996, so it is 29 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 400 vehicles a day, roughly 10% of them trucks, projected to reach 552 by 2044. The structure is 25 ft (7.5 m) long. If it were closed, the detour would be 13 mi (21 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 | 7 Good | Some minor problems. |
| Culvert | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was SD251 over Masdon Ck built?
It was built in 1996, making it 29 years old in 2025.
What condition is SD251 over Masdon 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 2022.
How much traffic does SD251 over Masdon Ck carry?
About 400 vehicles per day (2024 count), of which roughly 10% are trucks.
How long is SD251 over Masdon Ck?
The structure is 25 ft (7.5 m) long with a longest span of 12 ft (3.7 m).
Who owns SD251 over Masdon Ck?
It is owned by the State Highway Agency.