IRR BIA RTE 3 over Moreau River
GoodDewey County, South Dakota · 3.8 KM SE of Whitehorse · Structure no. 00000000000A110
- Built
- 1987
- 38 years old
- Condition
- Good
- inspected May 2023
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 200 ft
- 3 main spans
- Daily traffic
- 305
- 2023 count
- Owner
- Federal
- Bureau of Indian Affairs
About this bridge
IRR BIA RTE 3 over Moreau River is a steel continuous stringer/multi-beam or girder carrying IRR BIA RTE 3 over Moreau River in Dewey County, South Dakota. It was built in 1987, so it is 38 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 305 vehicles a day, roughly 6% of them trucks, projected to reach 405 by 2043. The structure is 200 ft (61 m) long and 34 ft wide. If it were closed, the detour would be 70.2 mi (113 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was IRR BIA RTE 3 over Moreau River built?
It was built in 1987, making it 38 years old in 2025.
What condition is IRR BIA RTE 3 over Moreau River 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 May 2023.
How much traffic does IRR BIA RTE 3 over Moreau River carry?
About 305 vehicles per day (2023 count), of which roughly 6% are trucks.
How long is IRR BIA RTE 3 over Moreau River?
The structure is 200 ft (61 m) long with a longest span of 80 ft (24.4 m) and a deck 34 ft wide.
Who owns IRR BIA RTE 3 over Moreau River?
It is owned by the Bureau of Indian Affairs.