IRR BIA RTE 51 over So. Branch Oconto River
FairMenominee County, Wisconsin · 0.3 KM North of BIA RTE 7 · Structure no. 00000000000F906
- Built
- 1977
- 48 years old
- Condition
- Fair
- inspected September 2024
- Type
- Slab
- Concrete
- Length
- 33 ft
- 1 main span
- Daily traffic
- 70
- 2024 count
- Owner
- Federal
- Bureau of Indian Affairs
About this bridge
IRR BIA RTE 51 over So. Branch Oconto River is a concrete slab carrying IRR BIA RTE 51 over So. Branch Oconto River in Menominee County, Wisconsin. It was built in 1977, so it is 48 years old, older than the Wisconsin average of 40.3 years.
The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 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 70 vehicles a day, roughly 10% of them trucks, projected to reach 90 by 2044. The structure is 33 ft (10.1 m) long and 26 ft wide. If it were closed, the detour would be 6.8 mi (11 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Superstructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Substructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| 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 51 over So. Branch Oconto River built?
It was built in 1977, making it 48 years old in 2025.
What condition is IRR BIA RTE 51 over So. Branch Oconto 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 September 2024.
How much traffic does IRR BIA RTE 51 over So. Branch Oconto River carry?
About 70 vehicles per day (2024 count), of which roughly 10% are trucks.
How long is IRR BIA RTE 51 over So. Branch Oconto River?
The structure is 33 ft (10.1 m) long with a longest span of 30 ft (9.1 m) and a deck 26 ft wide.
Who owns IRR BIA RTE 51 over So. Branch Oconto River?
It is owned by the Bureau of Indian Affairs.