IRR BIA Route 8 over East Branch Willow Creek
GoodDewey County, South Dakota · RTE 8 over E Brch Wil Crk · Structure no. 00000000000A146
- Built
- 2008
- 17 years old
- Condition
- Good
- inspected May 2023
- Type
- Tee Beam
- Concrete
- Length
- 100 ft
- 1 main span
- Daily traffic
- 160
- 2023 count
- Owner
- Federal
- Bureau of Indian Affairs
About this bridge
IRR BIA Route 8 over East Branch Willow Creek is a concrete tee beam carrying IRR BIA Route 8 over East Branch Willow Creek in Dewey County, South Dakota. It was built in 2008, so it is 17 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 160 vehicles a day, roughly 5% of them trucks, projected to reach 257 by 2043. The structure is 100 ft (30.5 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
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 Route 8 over East Branch Willow Creek built?
It was built in 2008, making it 17 years old in 2025.
What condition is IRR BIA Route 8 over East Branch Willow Creek 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 Route 8 over East Branch Willow Creek carry?
About 160 vehicles per day (2023 count), of which roughly 5% are trucks.
How long is IRR BIA Route 8 over East Branch Willow Creek?
The structure is 100 ft (30.5 m) long with a longest span of 94 ft (28.6 m) and a deck 32 ft wide.
Who owns IRR BIA Route 8 over East Branch Willow Creek?
It is owned by the Bureau of Indian Affairs.