Cth W over Manitowish River
Vilas County, Wisconsin · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Cth W over Manitowish River in Vilas County, Wisconsin, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the substructure, rated 5 (fair condition) on the 0-9 scale.
- It was built in 1982, making it 43 years old at the 2025 inventory.
- It carries about 1,695 vehicles a day (traffic count year 2024).
- Its listed owner is the county highway agency.
- It is one of 13 of the 29 inventoried bridges in Vilas County rated fair (44.8%); 3 (10.3%) are rated poor.
- Its traffic status in the 2025 inventory is open, no restriction (NBI item 41).
- It was rated poor in the 2024 inventory and is now fair (deck 5 to 6, superstructure 5 to 6, substructure 4 to 5).
- Its most recent inspection on record is dated August 2024, on a 12-month routine inspection cycle.
- A fair rating means the lowest-rated major component scores 5 or 6 on FHWA's 0-9 scale: some deterioration or minor section loss, but the structure is sound. It is the middle class, not a warning.
View this bridge on a map → (46.13856, -89.88508)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 5 | 6 | Satisfactory condition |
| Superstructure | 5 | 6 | Satisfactory condition |
| Substructure | 4 | 5 | Fair condition |
Bridge details
| Structure | Prestressed concrete multiple box beam |
| Length | about 52 ft |
| Location | 0.6M N Jct Ush 51 |
| NBI structure number | B63001100000000 |
| Condition class | Fair |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | August 2024 |
| Inspection interval (item 91) | 12 months |
| Scour (item 113) | 8: foundations stable, scour above the top of the footing |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Wisconsin department of transportation.
Busiest bridges in Vilas County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Ush 45-sth 17-sth over Eagle River | 2000 | 14,000 | Fair |
| Sth 17-sth 70 over Mud Creek | 1981 | 9,600 | Fair |
| Sth 70 over Wisconsin River 53 | 1993 | 6,000 | Fair |
| Sth 70 over Link Creek | 1988 | 5,700 | Fair |
| Sth 47 over Mishonagon Creek | 2008 | 4,800 | Good |
| Sth 70 over Saint Germain River | 1968 | 4,300 | Fair |
All bridges nearby: Vilas County, WI bridge conditions · every bridge in Vilas County · Wisconsin bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.