SD049 over Black Dog Ck
FairTripp County, South Dakota · 0.3 SW Lyman CO Line · Structure no. 000000062308092
- Built
- 1964
- 61 years old
- Condition
- Fair
- inspected July 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 72 ft
- 1 main span
- Daily traffic
- 371
- 2024 count
- Owner
- State
- State Highway Agency
About this bridge
SD049 over Black Dog Ck is a prestressed concrete stringer/multi-beam or girder carrying SD049 over Black Dog Ck in Tripp 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 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 371 vehicles a day, roughly 22% of them trucks, projected to reach 503 by 2044. The structure is 72 ft (22 m) long and 32 ft wide. If it were closed, the detour would be 13 mi (21 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 | 8 Very Good | No problems noted. |
| Superstructure | 7 Good | Some minor problems. |
| 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 SD049 over Black Dog Ck built?
It was built in 1964, making it 61 years old in 2025.
What condition is SD049 over Black Dog 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 July 2024.
How much traffic does SD049 over Black Dog Ck carry?
About 371 vehicles per day (2024 count), of which roughly 22% are trucks.
How long is SD049 over Black Dog Ck?
The structure is 72 ft (22 m) long with a longest span of 68 ft (20.7 m) and a deck 32 ft wide.
Who owns SD049 over Black Dog Ck?
It is owned by the State Highway Agency.