Sth 29 WB over Big Rib River
FairMarathon County, Wisconsin · 0.7M W JCT Sth 107 · Structure no. B37011500000000
- Built
- 1991
- 34 years old
- Condition
- Fair
- inspected September 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete Continuous
- Length
- 309 ft
- 4 main spans
- Daily traffic
- 8,280
- 2022 count
- Owner
- State
- State Highway Agency
About this bridge
Sth 29 WB over Big Rib River is a prestressed concrete continuous stringer/multi-beam or girder carrying Sth 29 WB over Big Rib River in Marathon County, Wisconsin. It was built in 1991, so it is 34 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 8,280 vehicles a day, roughly 19% of them trucks, projected to reach 10,700 by 2043. The structure is 309 ft (94.2 m) long and 43 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 | 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 | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Sth 29 WB over Big Rib River built?
It was built in 1991, making it 34 years old in 2025.
What condition is Sth 29 WB over Big Rib 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 2024.
How much traffic does Sth 29 WB over Big Rib River carry?
About 8,280 vehicles per day (2022 count), of which roughly 19% are trucks.
How long is Sth 29 WB over Big Rib River?
The structure is 309 ft (94.2 m) long with a longest span of 76 ft (23.3 m) and a deck 43 ft wide.
Who owns Sth 29 WB over Big Rib River?
It is owned by the State Highway Agency.