IH USH51-IH39NB over Cth B
FairPortage County, Wisconsin · 1.8M N JCT Sth 54 to E · Structure no. B49001400000000
- Built
- 1969
- 56 years old, rebuilt 2022
- Condition
- Fair
- inspected July 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete Continuous
- Length
- 164 ft
- 2 main spans
- Daily traffic
- 24,620
- 2022 count
- Owner
- State
- State Highway Agency
About this bridge
IH USH51-IH39NB over Cth B is a prestressed concrete continuous stringer/multi-beam or girder carrying IH USH51-IH39NB over Cth B in Portage County, Wisconsin. It was built in 1969 and reconstructed in 2022, so it is 56 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 24,620 vehicles a day, roughly 15% of them trucks, projected to reach 32,006 by 2043. The structure is 164 ft (50 m) long and 43 ft wide.
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 | 7 Good | Some minor problems. |
| 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. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was IH USH51-IH39NB over Cth B built?
It was built in 1969, making it 56 years old in 2025. It was reconstructed in 2022.
What condition is IH USH51-IH39NB over Cth B 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 July 2024.
How much traffic does IH USH51-IH39NB over Cth B carry?
About 24,620 vehicles per day (2022 count), of which roughly 15% are trucks.
How long is IH USH51-IH39NB over Cth B?
The structure is 164 ft (50 m) long with a longest span of 84 ft (25.5 m) and a deck 43 ft wide.
Who owns IH USH51-IH39NB over Cth B?
It is owned by the State Highway Agency.