IRR SD065 over Red Earth Ck
GoodZiebach County, South Dakota · 3.1 S JCT Sd 20 · Structure no. 000000069260092
- Built
- 1984
- 41 years old
- Condition
- Good
- inspected March 2023
- Type
- Slab
- Concrete Continuous
- Length
- 93 ft
- 3 main spans
- Daily traffic
- 580
- 2024 count
- Owner
- State
- State Highway Agency
About this bridge
IRR SD065 over Red Earth Ck is a concrete continuous slab carrying IRR SD065 over Red Earth Ck in Ziebach County, South Dakota. It was built in 1984, so it is 41 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 580 vehicles a day, roughly 13% of them trucks, projected to reach 879 by 2044. The structure is 93 ft (28.4 m) long and 35 ft wide. If it were closed, the detour would be 65.2 mi (105 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 | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was IRR SD065 over Red Earth Ck built?
It was built in 1984, making it 41 years old in 2025.
What condition is IRR SD065 over Red Earth 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 March 2023.
How much traffic does IRR SD065 over Red Earth Ck carry?
About 580 vehicles per day (2024 count), of which roughly 13% are trucks.
How long is IRR SD065 over Red Earth Ck?
The structure is 93 ft (28.4 m) long with a longest span of 32 ft (9.9 m) and a deck 35 ft wide.
Who owns IRR SD065 over Red Earth Ck?
It is owned by the State Highway Agency.