Sth 64-STH 65-KNOW over Willow River
FairSt. Croix County, Wisconsin · 0.2M E JCT Sth 65 to S · Structure no. B55009100000000
- Built
- 1924
- 101 years old, rebuilt 1985
- Condition
- Fair
- inspected October 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete Continuous
- Length
- 98 ft
- 2 main spans
- Daily traffic
- 19,790
- 2022 count
- Owner
- City
- City or Municipal Highway Agency
About this bridge
Sth 64-STH 65-KNOW over Willow River is a prestressed concrete continuous stringer/multi-beam or girder carrying Sth 64-STH 65-KNOW over Willow River in St. Croix County, Wisconsin. It was built in 1924 and reconstructed in 1985, so it is 101 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 19,790 vehicles a day, roughly 3% of them trucks, projected to reach 21,769 by 2043. The structure is 98 ft (30 m) long and 61 ft wide. If it were closed, the detour would be 10.6 mi (17 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 | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Sth 64-STH 65-KNOW over Willow River built?
It was built in 1924, making it 101 years old in 2025. It was reconstructed in 1985.
What condition is Sth 64-STH 65-KNOW over Willow 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 October 2024.
How much traffic does Sth 64-STH 65-KNOW over Willow River carry?
About 19,790 vehicles per day (2022 count), of which roughly 3% are trucks.
How long is Sth 64-STH 65-KNOW over Willow River?
The structure is 98 ft (30 m) long with a longest span of 49 ft (14.8 m) and a deck 61 ft wide.
Who owns Sth 64-STH 65-KNOW over Willow River?
It is owned by the City or Municipal Highway Agency.