IRR SD065 over Firesteel Ck
FairCorson County, South Dakota · 0.4 N Dewey CO Line · Structure no. 000000016280326
- Built
- 1961
- 64 years old
- Condition
- Fair
- inspected March 2024
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 110 ft
- 3 main spans
- Daily traffic
- 533
- 2024 count
- Owner
- State
- State Highway Agency
About this bridge
IRR SD065 over Firesteel Ck is a steel stringer/multi-beam or girder carrying IRR SD065 over Firesteel Ck in Corson County, South Dakota. It was built in 1961, so it is 64 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 533 vehicles a day, roughly 18% of them trucks, projected to reach 777 by 2044. The structure is 110 ft (33.4 m) long and 32 ft wide. If it were closed, the detour would be 47.8 mi (77 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 | 7 Good | Some minor problems. |
| 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 IRR SD065 over Firesteel Ck built?
It was built in 1961, making it 64 years old in 2025.
What condition is IRR SD065 over Firesteel 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 March 2024.
How much traffic does IRR SD065 over Firesteel Ck carry?
About 533 vehicles per day (2024 count), of which roughly 18% are trucks.
How long is IRR SD065 over Firesteel Ck?
The structure is 110 ft (33.4 m) long with a longest span of 43 ft (13 m) and a deck 32 ft wide.
Who owns IRR SD065 over Firesteel Ck?
It is owned by the State Highway Agency.