Sth 55 over Pine River
FairForest County, Wisconsin · 19.2M N JCT Sth 32 to N · Structure no. B21000800000000
- Built
- 1979
- 46 years old
- Condition
- Fair
- inspected August 2023
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 70 ft
- 1 main span
- Daily traffic
- 180
- 2022 count
- Owner
- State
- State Highway Agency
About this bridge
Sth 55 over Pine River is a prestressed concrete stringer/multi-beam or girder carrying Sth 55 over Pine River in Forest County, Wisconsin. It was built in 1979, so it is 46 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 180 vehicles a day, roughly 9% of them trucks, projected to reach 235 by 2042. The structure is 70 ft (21.4 m) long and 37 ft wide. If it were closed, the detour would be 66.5 mi (107 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 | 7 Good | Some minor problems. |
| Substructure | 7 Good | Some minor problems. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Sth 55 over Pine River built?
It was built in 1979, making it 46 years old in 2025.
What condition is Sth 55 over Pine 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 August 2023.
How much traffic does Sth 55 over Pine River carry?
About 180 vehicles per day (2022 count), of which roughly 9% are trucks.
How long is Sth 55 over Pine River?
The structure is 70 ft (21.4 m) long with a longest span of 68 ft (20.7 m) and a deck 37 ft wide.
Who owns Sth 55 over Pine River?
It is owned by the State Highway Agency.