Sth 106 over Koshkonong Creek
FairJefferson County, Wisconsin · 3.7M E JCT Sth 73 · Structure no. B28010800000000
- Built
- 2001
- 24 years old
- Condition
- Fair
- inspected May 2024
- Type
- Slab
- Concrete Continuous
- Length
- 104 ft
- 2 main spans
- Daily traffic
- 770
- 2022 count
- Owner
- State
- State Highway Agency
About this bridge
Sth 106 over Koshkonong Creek is a concrete continuous slab carrying Sth 106 over Koshkonong Creek in Jefferson County, Wisconsin. It was built in 2001, so it is 24 years old, younger 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 770 vehicles a day, roughly 11% of them trucks, projected to reach 2,000 by 2043. The structure is 104 ft (31.6 m) long and 37 ft wide. If it were closed, the detour would be 3.7 mi (6 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| 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 106 over Koshkonong Creek built?
It was built in 2001, making it 24 years old in 2025.
What condition is Sth 106 over Koshkonong 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 May 2024.
How much traffic does Sth 106 over Koshkonong Creek carry?
About 770 vehicles per day (2022 count), of which roughly 11% are trucks.
How long is Sth 106 over Koshkonong Creek?
The structure is 104 ft (31.6 m) long with a longest span of 51 ft (15.4 m) and a deck 37 ft wide.
Who owns Sth 106 over Koshkonong Creek?
It is owned by the State Highway Agency.