US012 over Moccasin Ck
PoorBrown County, South Dakota · 1.4 E JCT US 281 N · Structure no. 000000007125330
- Built
- 1954
- 71 years old, rebuilt 1989
- Condition
- Poor
- inspected June 2024
- Type
- Slab
- Concrete Continuous
- Length
- 119 ft
- 3 main spans
- Daily traffic
- 21,635
- 2024 count
- Owner
- State
- State Highway Agency
About this bridge
US012 over Moccasin Ck is a concrete continuous slab carrying US012 over Moccasin Ck in Brown County, South Dakota. It was built in 1954 and reconstructed in 1989, so it is 71 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 poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
It carries about 21,635 vehicles a day, roughly 16% of them trucks, projected to reach 33,253 by 2044. The structure is 119 ft (36.4 m) long and 73 ft wide. If it were closed, the detour would be 47.8 mi (77 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Superstructure | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Substructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was US012 over Moccasin Ck built?
It was built in 1954, making it 71 years old in 2025. It was reconstructed in 1989.
What condition is US012 over Moccasin Ck in?
The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in June 2024.
How much traffic does US012 over Moccasin Ck carry?
About 21,635 vehicles per day (2024 count), of which roughly 16% are trucks.
How long is US012 over Moccasin Ck?
The structure is 119 ft (36.4 m) long with a longest span of 43 ft (13 m) and a deck 73 ft wide.
Who owns US012 over Moccasin Ck?
It is owned by the State Highway Agency.