SD027 over Mud Ck
FairDay County, South Dakota · 8.9 S Marshall CO Line · Structure no. 000000019070089
- Built
- 1970
- 55 years old
- Condition
- Fair
- inspected June 2024
- Type
- Slab
- Concrete Continuous
- Length
- 93 ft
- 3 main spans
- Daily traffic
- 209
- 2024 count
- Owner
- State
- State Highway Agency
About this bridge
SD027 over Mud Ck is a concrete continuous slab carrying SD027 over Mud Ck in Day County, South Dakota. It was built in 1970, so it is 55 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 209 vehicles a day, roughly 25% of them trucks, projected to reach 324 by 2044. The structure is 93 ft (28.3 m) long and 39 ft wide. If it were closed, the detour would be 24.2 mi (39 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Superstructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was SD027 over Mud Ck built?
It was built in 1970, making it 55 years old in 2025.
What condition is SD027 over Mud 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 SD027 over Mud Ck carry?
About 209 vehicles per day (2024 count), of which roughly 25% are trucks.
How long is SD027 over Mud Ck?
The structure is 93 ft (28.3 m) long with a longest span of 33 ft (10.1 m) and a deck 39 ft wide.
Who owns SD027 over Mud Ck?
It is owned by the State Highway Agency.