SD049 over Moccasin Ck
FairTripp County, South Dakota · 4.3 SW Lyman CO Line · Structure no. 000000062283124
- Built
- 1964
- 61 years old
- Condition
- Fair
- inspected August 2023
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 168 ft
- 3 main spans
- Daily traffic
- 371
- 2024 count
- Owner
- State
- State Highway Agency
About this bridge
SD049 over Moccasin Ck is a steel continuous stringer/multi-beam or girder carrying SD049 over Moccasin 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 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 371 vehicles a day, roughly 22% of them trucks, projected to reach 503 by 2044. The structure is 168 ft (51.2 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Superstructure | 7 Good | Some minor problems. |
| 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 SD049 over Moccasin Ck built?
It was built in 1964, making it 61 years old in 2025.
What condition is SD049 over Moccasin 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 August 2023.
How much traffic does SD049 over Moccasin Ck carry?
About 371 vehicles per day (2024 count), of which roughly 22% are trucks.
How long is SD049 over Moccasin Ck?
The structure is 168 ft (51.2 m) long with a longest span of 64 ft (19.5 m) and a deck 32 ft wide.
Who owns SD049 over Moccasin Ck?
It is owned by the State Highway Agency.