US012 over Blue Blanket Ck
FairWalworth County, South Dakota · 1.3 W of Glenham · Structure no. 000000065082040
- Built
- 1964
- 61 years old
- Condition
- Fair
- inspected February 2024
- Type
- Culvert
- Concrete Continuous
- Length
- 21 ft
- 2 main spans
- Daily traffic
- 1,963
- 2024 count
- Owner
- State
- State Highway Agency
About this bridge
US012 over Blue Blanket Ck is a concrete continuous culvert carrying US012 over Blue Blanket Ck in Walworth County, South Dakota. It was built in 1964, so it is 61 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 1,963 vehicles a day, roughly 15% of them trucks, projected to reach 3,100 by 2044. The structure is 21 ft (6.3 m) long. If it were closed, the detour would be 98.8 mi (159 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| 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 US012 over Blue Blanket Ck built?
It was built in 1964, making it 61 years old in 2025.
What condition is US012 over Blue Blanket Ck 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 February 2024.
How much traffic does US012 over Blue Blanket Ck carry?
About 1,963 vehicles per day (2024 count), of which roughly 15% are trucks.
How long is US012 over Blue Blanket Ck?
The structure is 21 ft (6.3 m) long with a longest span of 10 ft (3 m).
Who owns US012 over Blue Blanket Ck?
It is owned by the State Highway Agency.