Cth N over Big Eau Pleine River
PoorMarathon County, Wisconsin · 0.2M E JCT Cth F to S · Structure no. B37008300000000
- Built
- 1961
- 64 years old, rebuilt 1996
- Condition
- Poor
- inspected July 2023
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete
- Length
- 192 ft
- 3 main spans
- Daily traffic
- 1,106
- 2023 count
- Owner
- County
- County Highway Agency
About this bridge
Cth N over Big Eau Pleine River is a prestressed concrete box beam or girders - multiple carrying Cth N over Big Eau Pleine River in Marathon County, Wisconsin. It was built in 1961 and reconstructed in 1996, so it is 64 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 4 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 1,106 vehicles a day, projected to reach 1,127 by 2042. The structure is 192 ft (58.4 m) long and 29 ft wide. If it were closed, the detour would be 3.7 mi (6 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 | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Superstructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Substructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Cth N over Big Eau Pleine River built?
It was built in 1961, making it 64 years old in 2025. It was reconstructed in 1996.
What condition is Cth N over Big Eau Pleine 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 July 2023.
How much traffic does Cth N over Big Eau Pleine River carry?
About 1,106 vehicles per day (2023 count).
How long is Cth N over Big Eau Pleine River?
The structure is 192 ft (58.4 m) long with a longest span of 71 ft (21.6 m) and a deck 29 ft wide.
Who owns Cth N over Big Eau Pleine River?
It is owned by the County Highway Agency.