IRR BIA RTE 12 over Neff Extension Drain
FairIsabella County, Michigan · Saginaw Chippewa Res. · Structure no. 00000000000F520
- Built
- 1998
- 27 years old
- Condition
- Fair
- inspected August 2023
- Type
- Culvert
- Concrete
- Length
- 20 ft
- 1 main span
- Daily traffic
- 60
- 2023 count
- Owner
- Federal
- Bureau of Indian Affairs
About this bridge
IRR BIA RTE 12 over Neff Extension Drain is a concrete culvert carrying IRR BIA RTE 12 over Neff Extension Drain in Isabella County, Michigan. It was built in 1998, so it is 27 years old, younger than the Michigan average of 48.3 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 60 vehicles a day, roughly 10% of them trucks, projected to reach 100 by 2043. The structure is 20 ft (6.1 m) long and 64 ft wide. If it were closed, the detour would be 1.2 mi (2 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 |
|---|---|---|
| Channel and channel protection | 7 Good | Some minor problems. |
| Culvert | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was IRR BIA RTE 12 over Neff Extension Drain built?
It was built in 1998, making it 27 years old in 2025.
What condition is IRR BIA RTE 12 over Neff Extension Drain 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 August 2023.
How much traffic does IRR BIA RTE 12 over Neff Extension Drain carry?
About 60 vehicles per day (2023 count), of which roughly 10% are trucks.
How long is IRR BIA RTE 12 over Neff Extension Drain?
The structure is 20 ft (6.1 m) long with a longest span of 20 ft (6.1 m) and a deck 64 ft wide.
Who owns IRR BIA RTE 12 over Neff Extension Drain?
It is owned by the Bureau of Indian Affairs.