IH 39 SB over Baraboo River
FairColumbia County, Wisconsin · 1.9M S JCT Sth 33 to E · Structure no. B11005300000000
- 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 39 SB over Baraboo River is a prestressed concrete stringer/multi-beam or girder carrying IH 39 SB 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 10% of them trucks, projected to reach 12,000 by 2041. The structure is 174 ft (52.9 m) long and 42 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 | 8 Very Good | No problems noted. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was IH 39 SB 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 39 SB 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 39 SB over Baraboo River carry?
About 10,000 vehicles per day (2021 count), of which roughly 10% are trucks.
How long is IH 39 SB 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 42 ft wide.
Who owns IH 39 SB over Baraboo River?
It is owned by the State Highway Agency.