IH SB IH 39 over Wisconsin River
FairColumbia County, Wisconsin · 1.2M S JCT Sth 16 to E · Structure no. B11005600000000
- Built
- 1964
- 61 years old, rebuilt 1990
- Condition
- Fair
- inspected September 2023
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 1,123 ft
- 8 main spans
- Daily traffic
- 10,050
- 2021 count
- Owner
- State
- State Highway Agency
About this bridge
IH SB IH 39 over Wisconsin River is a steel continuous stringer/multi-beam or girder carrying IH SB IH 39 over Wisconsin River in Columbia County, Wisconsin. It was built in 1964 and reconstructed in 1990, so it is 61 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 5 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 10,050 vehicles a day, roughly 10% of them trucks, projected to reach 12,060 by 2041. The structure is 1,123 ft (342.4 m) long and 34 ft wide. If it were closed, the detour would be 0.6 mi (1 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| 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 SB IH 39 over Wisconsin River built?
It was built in 1964, making it 61 years old in 2025. It was reconstructed in 1990.
What condition is IH SB IH 39 over Wisconsin 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 September 2023.
How much traffic does IH SB IH 39 over Wisconsin River carry?
About 10,050 vehicles per day (2021 count), of which roughly 10% are trucks.
How long is IH SB IH 39 over Wisconsin River?
The structure is 1,123 ft (342.4 m) long with a longest span of 148 ft (45.1 m) and a deck 34 ft wide.
Who owns IH SB IH 39 over Wisconsin River?
It is owned by the State Highway Agency.