Cth Bn over IH 39
GoodDane County, Wisconsin · 1.9M S JCT Cth N · Structure no. B13071800000000
- Built
- 2016
- 9 years old
- Condition
- Good
- inspected November 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete Continuous
- Length
- 278 ft
- 2 main spans
- Daily traffic
- 294
- 2022 count
- Owner
- State
- State Highway Agency
About this bridge
Cth Bn over IH 39 is a prestressed concrete continuous stringer/multi-beam or girder carrying Cth Bn over IH 39 in Dane County, Wisconsin. It was built in 2016, so it is 9 years old, younger 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 294 vehicles a day, projected to reach 365 by 2040. The structure is 278 ft (84.7 m) long and 39 ft wide. If it were closed, the detour would be 12.4 mi (20 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 |
|---|---|---|
| Deck | 8 Very Good | No problems noted. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Cth Bn over IH 39 built?
It was built in 2016, making it 9 years old in 2025.
What condition is Cth Bn over IH 39 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 November 2024.
How much traffic does Cth Bn over IH 39 carry?
About 294 vehicles per day (2022 count).
How long is Cth Bn over IH 39?
The structure is 278 ft (84.7 m) long with a longest span of 137 ft (41.8 m) and a deck 39 ft wide.
Who owns Cth Bn over IH 39?
It is owned by the State Highway Agency.