Cth B over Amnicon River
PoorDouglas County, Wisconsin · 0.3M E JCT Cth L · Structure no. B16004200000000
- Built
- 1977
- 48 years old
- Condition
- Poor
- inspected September 2023
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 75 ft
- 1 main span
- Daily traffic
- 688
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
Cth B over Amnicon River is a prestressed concrete stringer/multi-beam or girder carrying Cth B over Amnicon River in Douglas County, Wisconsin. It was built in 1977, so it is 48 years old, older than the Wisconsin average of 40.3 years.
The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 3 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
It carries about 688 vehicles a day, projected to reach 756 by 2042. The structure is 75 ft (22.9 m) long and 34 ft wide. If it were closed, the detour would be 5.6 mi (9 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 3 Serious | Loss of section, deterioration, spalling or scour have seriously affected primary structural components. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 7 Good | Some minor problems. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Cth B over Amnicon River built?
It was built in 1977, making it 48 years old in 2025.
What condition is Cth B over Amnicon River in?
The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in September 2023.
How much traffic does Cth B over Amnicon River carry?
About 688 vehicles per day (2022 count).
How long is Cth B over Amnicon River?
The structure is 75 ft (22.9 m) long with a longest span of 73 ft (22.3 m) and a deck 34 ft wide.
Who owns Cth B over Amnicon River?
It is owned by the County Highway Agency.