Sth 25 over Mississippi River Slough
FairBuffalo County, Wisconsin · 1.5M N Minn State Line · Structure no. B06002000000000
- Built
- 1955
- 70 years old, rebuilt 1991
- Condition
- Fair
- inspected May 2024
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 407 ft
- 6 main spans
- Daily traffic
- 4,500
- 2022 count
- Owner
- State
- State Highway Agency
About this bridge
Sth 25 over Mississippi River Slough is a steel stringer/multi-beam or girder carrying Sth 25 over Mississippi River Slough in Buffalo County, Wisconsin. It was built in 1955 and reconstructed in 1991, so it is 70 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 4,500 vehicles a day, roughly 9% of them trucks, projected to reach 5,400 by 2043. The structure is 407 ft (124.2 m) long and 47 ft wide. If it were closed, the detour would be 62.8 mi (101 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 | 7 Good | Some minor problems. |
| Superstructure | 7 Good | Some minor problems. |
| 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 Sth 25 over Mississippi River Slough built?
It was built in 1955, making it 70 years old in 2025. It was reconstructed in 1991.
What condition is Sth 25 over Mississippi River Slough 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 May 2024.
How much traffic does Sth 25 over Mississippi River Slough carry?
About 4,500 vehicles per day (2022 count), of which roughly 9% are trucks.
How long is Sth 25 over Mississippi River Slough?
The structure is 407 ft (124.2 m) long with a longest span of 68 ft (20.6 m) and a deck 47 ft wide.
Who owns Sth 25 over Mississippi River Slough?
It is owned by the State Highway Agency.