IRR BIA Route 12 over Iowa Drainage Ditch
GoodTama County, Iowa · Settlement Road · Structure no. 00000000000F411
- Built
- 2001
- 24 years old
- Condition
- Good
- inspected April 2024
- Type
- Culvert
- Concrete
- Length
- 24 ft
- 2 main spans
- Daily traffic
- 300
- 2024 count
- Owner
- Federal
- Bureau of Indian Affairs
About this bridge
IRR BIA Route 12 over Iowa Drainage Ditch is a concrete culvert carrying IRR BIA Route 12 over Iowa Drainage Ditch in Tama County, Iowa. It was built in 2001, so it is 24 years old, younger than the Iowa average of 45.5 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 300 vehicles a day, roughly 25% of them trucks, projected to reach 400 by 2044. The structure is 24 ft (7.4 m) long and 54 ft wide. If it were closed, the detour would be 0.6 mi (1 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 |
|---|---|---|
| Channel and channel protection | 7 Good | Some minor problems. |
| Culvert | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was IRR BIA Route 12 over Iowa Drainage Ditch built?
It was built in 2001, making it 24 years old in 2025.
What condition is IRR BIA Route 12 over Iowa Drainage Ditch 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 April 2024.
How much traffic does IRR BIA Route 12 over Iowa Drainage Ditch carry?
About 300 vehicles per day (2024 count), of which roughly 25% are trucks.
How long is IRR BIA Route 12 over Iowa Drainage Ditch?
The structure is 24 ft (7.4 m) long with a longest span of 12 ft (3.7 m) and a deck 54 ft wide.
Who owns IRR BIA Route 12 over Iowa Drainage Ditch?
It is owned by the Bureau of Indian Affairs.