Ih Ush51-ih39nb over Cth B
Portage County, Wisconsin · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Ih Ush51-ih39nb over Cth B in Portage County, Wisconsin, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the superstructure, rated 5 (fair condition) on the 0-9 scale.
- It was built in 1969 and reconstructed in 2022, making it 56 years old at the 2025 inventory.
- It carries about 24,620 vehicles a day (traffic count year 2022).
- Its listed owner is the state highway agency.
- It is one of 89 of the 183 inventoried bridges in Portage County rated fair (48.6%); 4 (2.2%) are rated poor.
- 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 → (44.45367, -89.51814)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Deck | 7 | Good condition |
| Superstructure | 5 | Fair condition |
| Substructure | 5 | Fair condition |
Bridge details
| Structure | Continuous prestressed concrete stringer or multi-beam girder |
| Length | about 164 ft |
| Location | 1.8M N Jct Sth 54 to E |
| NBI structure number | B49001400000000 |
| Condition class | Fair |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Wisconsin department of transportation.
Busiest bridges in Portage County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Ih Ush 51-ih 39 over Hay Meadow Creek | 1972 | 29,800 | Good |
| Ush 10 over Ih Ush 51-ih 39 | 1968 | 25,755 | Fair |
| Ih Ush51-ih39sb over Cth B | 1969 | 24,620 | Fair |
| Sth 66-main St. over Plover River | 1926 | 19,200 | Fair |
| Ih Ush51-ih39nb over Sth 66 | 1968 | 16,900 | Fair |
| Ih Ush51-ih39sb over Sth 66 | 1968 | 16,900 | Fair |
All bridges nearby: Portage County, WI bridge conditions · every bridge in Portage County · Wisconsin bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.