Sth 81 over Willow Creek
FairRock County, Wisconsin · 2.9M E JCT Sth 11 to E · Structure no. B53010200000000
- Built
- 1976
- 49 years old
- Condition
- Fair
- inspected October 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 84 ft
- 1 main span
- Daily traffic
- 3,500
- 2022 count
- Owner
- State
- State Highway Agency
About this bridge
Sth 81 over Willow Creek is a prestressed concrete stringer/multi-beam or girder carrying Sth 81 over Willow Creek in Rock County, Wisconsin. It was built in 1976, so it is 49 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 3,500 vehicles a day, roughly 7% of them trucks, projected to reach 4,200 by 2043. The structure is 84 ft (25.7 m) long and 47 ft wide. If it were closed, the detour would be 43.5 mi (70 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Sth 81 over Willow Creek built?
It was built in 1976, making it 49 years old in 2025.
What condition is Sth 81 over Willow Creek 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 October 2024.
How much traffic does Sth 81 over Willow Creek carry?
About 3,500 vehicles per day (2022 count), of which roughly 7% are trucks.
How long is Sth 81 over Willow Creek?
The structure is 84 ft (25.7 m) long with a longest span of 82 ft (25 m) and a deck 47 ft wide.
Who owns Sth 81 over Willow Creek?
It is owned by the State Highway Agency.