IH NB IH 39 over Baraboo River
FairColumbia County, Wisconsin · 1.2M N JCT IH 90 to E · Structure no. B11005200000000
- Built
- 1962
- 63 years old, rebuilt 1999
- Condition
- Fair
- inspected July 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 174 ft
- 3 main spans
- Daily traffic
- 10,000
- 2021 count
- Owner
- State
- State Highway Agency
About this bridge
IH NB IH 39 over Baraboo River is a prestressed concrete stringer/multi-beam or girder carrying IH NB IH 39 over Baraboo River in Columbia County, Wisconsin. It was built in 1962 and reconstructed in 1999, so it is 63 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 10,000 vehicles a day, roughly 23% of them trucks, projected to reach 12,000 by 2041. The structure is 174 ft (52.9 m) long and 45 ft wide.
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 | 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 IH NB IH 39 over Baraboo River built?
It was built in 1962, making it 63 years old in 2025. It was reconstructed in 1999.
What condition is IH NB IH 39 over Baraboo 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 July 2024.
How much traffic does IH NB IH 39 over Baraboo River carry?
About 10,000 vehicles per day (2021 count), of which roughly 23% are trucks.
How long is IH NB IH 39 over Baraboo River?
The structure is 174 ft (52.9 m) long with a longest span of 57 ft (17.3 m) and a deck 45 ft wide.
Who owns IH NB IH 39 over Baraboo River?
It is owned by the State Highway Agency.