Sth 11-STH 81 over Riley School Branch
GoodGreen County, Wisconsin · 1.3M E JCT Cth S · Structure no. B23003900000000
- Built
- 1971
- 54 years old
- Condition
- Good
- inspected February 2023
- Type
- Culvert
- Concrete Continuous
- Length
- 27 ft
- 3 main spans
- Daily traffic
- 7,800
- 2022 count
- Owner
- State
- State Highway Agency
About this bridge
Sth 11-STH 81 over Riley School Branch is a concrete continuous culvert carrying Sth 11-STH 81 over Riley School Branch in Green County, Wisconsin. It was built in 1971, so it is 54 years old, older than the Wisconsin average of 40.3 years.
The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 7,800 vehicles a day, roughly 13% of them trucks, projected to reach 6,600 by 2042. The structure is 27 ft (8.2 m) long. If it were closed, the detour would be 3.7 mi (6 km).
Location
Open in Google MapsCondition and inspection
All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
| Component | Rating | Meaning |
|---|---|---|
| Channel and channel protection | 8 Very Good | No problems noted. |
| Culvert | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Sth 11-STH 81 over Riley School Branch built?
It was built in 1971, making it 54 years old in 2025.
What condition is Sth 11-STH 81 over Riley School Branch in?
The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in February 2023.
How much traffic does Sth 11-STH 81 over Riley School Branch carry?
About 7,800 vehicles per day (2022 count), of which roughly 13% are trucks.
How long is Sth 11-STH 81 over Riley School Branch?
The structure is 27 ft (8.2 m) long with a longest span of 8 ft (2.4 m).
Who owns Sth 11-STH 81 over Riley School Branch?
It is owned by the State Highway Agency.