IRR BIA RTE 6 over Ash Creek
GoodZiebach County, South Dakota · 19KM West of Cherry Creek · Structure no. 00000000000A015
- Built
- 1968
- 57 years old, rebuilt 2005
- Condition
- Good
- inspected May 2023
- Type
- Tee Beam
- Prestressed Concrete
- Length
- 105 ft
- 3 main spans
- Daily traffic
- 814
- 2023 count
- Owner
- Federal
- Bureau of Indian Affairs
About this bridge
IRR BIA RTE 6 over Ash Creek is a prestressed concrete tee beam carrying IRR BIA RTE 6 over Ash Creek in Ziebach County, South Dakota. It was built in 1968 and reconstructed in 2005, so it is 57 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 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 814 vehicles a day, roughly 7% of them trucks, projected to reach 368 by 2043. The structure is 105 ft (32.1 m) long and 31 ft wide. If it were closed, the detour would be 6.2 mi (10 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 BIA RTE 6 over Ash Creek built?
It was built in 1968, making it 57 years old in 2025. It was reconstructed in 2005.
What condition is IRR BIA RTE 6 over Ash 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 RTE 6 over Ash Creek carry?
About 814 vehicles per day (2023 count), of which roughly 7% are trucks.
How long is IRR BIA RTE 6 over Ash Creek?
The structure is 105 ft (32.1 m) long with a longest span of 42 ft (12.9 m) and a deck 31 ft wide.
Who owns IRR BIA RTE 6 over Ash Creek?
It is owned by the Bureau of Indian Affairs.