IRR BIA RTE 27 over White River
FairCounty 102, South Dakota · 4 KM N of Rockyford · Structure no. 00000000000A112
- Built
- 1985
- 40 years old
- Condition
- Fair
- inspected July 2023
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 197 ft
- 2 main spans
- Daily traffic
- 2,368
- 2020 count
- Owner
- Federal
- Bureau of Indian Affairs
About this bridge
IRR BIA RTE 27 over White River is a steel continuous stringer/multi-beam or girder carrying IRR BIA RTE 27 over White River in County 102, South Dakota. It was built in 1985, so it is 40 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 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 2,368 vehicles a day, roughly 25% of them trucks, projected to reach 2,495 by 2043. The structure is 197 ft (59.9 m) long and 34 ft wide. If it were closed, the detour would be 9.3 mi (15 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| 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 27 over White River built?
It was built in 1985, making it 40 years old in 2025.
What condition is IRR BIA RTE 27 over White River 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 2023.
How much traffic does IRR BIA RTE 27 over White River carry?
About 2,368 vehicles per day (2020 count), of which roughly 25% are trucks.
How long is IRR BIA RTE 27 over White River?
The structure is 197 ft (59.9 m) long with a longest span of 99 ft (30.2 m) and a deck 34 ft wide.
Who owns IRR BIA RTE 27 over White River?
It is owned by the Bureau of Indian Affairs.