IH USH51-IH39 SB over Sth 23
FairMarquette County, Wisconsin · 4.2M S JCT Cth D · Structure no. B39002000000000
- Built
- 1984
- 41 years old
- Condition
- Fair
- inspected April 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete Continuous
- Length
- 179 ft
- 2 main spans
- Daily traffic
- 8,900
- 2022 count
- Owner
- State
- State Highway Agency
About this bridge
IH USH51-IH39 SB over Sth 23 is a prestressed concrete continuous stringer/multi-beam or girder carrying IH USH51-IH39 SB over Sth 23 in Marquette County, Wisconsin. It was built in 1984, so it is 41 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 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 8,900 vehicles a day, roughly 18% of them trucks, projected to reach 10,680 by 2042. The structure is 179 ft (54.5 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 8 Very Good | No problems noted. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was IH USH51-IH39 SB over Sth 23 built?
It was built in 1984, making it 41 years old in 2025.
What condition is IH USH51-IH39 SB over Sth 23 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 April 2024.
How much traffic does IH USH51-IH39 SB over Sth 23 carry?
About 8,900 vehicles per day (2022 count), of which roughly 18% are trucks.
How long is IH USH51-IH39 SB over Sth 23?
The structure is 179 ft (54.5 m) long with a longest span of 92 ft (28 m) and a deck 43 ft wide.
Who owns IH USH51-IH39 SB over Sth 23?
It is owned by the State Highway Agency.