SD050 over Marne Ck
GoodYankton County, South Dakota · 1.3 W JCT US 81 · Structure no. 000000068107180
- Built
- 1980
- 45 years old
- Condition
- Good
- inspected February 2023
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 80 ft
- 1 main span
- Daily traffic
- 4,096
- 2024 count
- Owner
- State
- State Highway Agency
About this bridge
SD050 over Marne Ck is a steel stringer/multi-beam or girder carrying SD050 over Marne Ck in Yankton County, South Dakota. It was built in 1980, so it is 45 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 4,096 vehicles a day, roughly 8% of them trucks, projected to reach 6,160 by 2044. The structure is 80 ft (24.4 m) long and 43 ft wide. If it were closed, the detour would be 1.9 mi (3 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 |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 7 Good | Some minor problems. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was SD050 over Marne Ck built?
It was built in 1980, making it 45 years old in 2025.
What condition is SD050 over Marne 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 February 2023.
How much traffic does SD050 over Marne Ck carry?
About 4,096 vehicles per day (2024 count), of which roughly 8% are trucks.
How long is SD050 over Marne Ck?
The structure is 80 ft (24.4 m) long with a longest span of 78 ft (23.8 m) and a deck 43 ft wide.
Who owns SD050 over Marne Ck?
It is owned by the State Highway Agency.