US081 over Marne Ck
FairYankton County, South Dakota · 0.4 N JCT Sd 50 · Structure no. 000000068120203
- Built
- 1959
- 66 years old
- Condition
- Fair
- inspected June 2024
- Type
- Slab
- Concrete Continuous
- Length
- 119 ft
- 3 main spans
- Daily traffic
- 16,870
- 2024 count
- Owner
- State
- State Highway Agency
About this bridge
US081 over Marne Ck is a concrete continuous slab carrying US081 over Marne Ck in Yankton County, South Dakota. It was built in 1959, so it is 66 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 6 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 16,870 vehicles a day, roughly 5% of them trucks, projected to reach 23,719 by 2044. The structure is 119 ft (36.4 m) long and 90 ft wide. If it were closed, the detour would be 52.2 mi (84 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 |
|---|---|---|
| Deck | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was US081 over Marne Ck built?
It was built in 1959, making it 66 years old in 2025.
What condition is US081 over Marne 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 June 2024.
How much traffic does US081 over Marne Ck carry?
About 16,870 vehicles per day (2024 count), of which roughly 5% are trucks.
How long is US081 over Marne Ck?
The structure is 119 ft (36.4 m) long with a longest span of 43 ft (13 m) and a deck 90 ft wide.
Who owns US081 over Marne Ck?
It is owned by the State Highway Agency.