Cth Bb over Buffalo River
Buffalo County, Wisconsin · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Cth Bb over Buffalo River in Buffalo County, Wisconsin, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 6 (satisfactory condition) on the 0-9 scale.
- It was built in 1969, making it 56 years old at the 2025 inventory.
- It carries about 542 vehicles a day (traffic count year 2022).
- Its listed owner is the county highway agency.
- It is one of 76 of the 239 inventoried bridges in Buffalo County rated fair (31.8%); 20 (8.4%) are rated poor.
- Its traffic status in the 2025 inventory is posted for another load-capacity restriction (speed, number of vehicles on the bridge, etc.) (NBI item 41).
- Its condition class and component ratings are unchanged from the 2024 inventory.
- Its most recent inspection on record is dated October 2024, on a 24-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 → (44.57028, -91.59361)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 6 | 6 | Satisfactory condition |
| Superstructure | 7 | 7 | Good condition |
| Substructure | 7 | 7 | Good condition |
Bridge details
| Structure | Continuous prestressed concrete stringer or multi-beam girder |
| Length | about 171 ft |
| Location | 0.3M S Jct Ush 10 |
| NBI structure number | B06003900000000 |
| Condition class | Fair |
| Traffic status (item 41) | Posted for another load-capacity restriction (speed, number of vehicles on the bridge, etc.) |
| Last inspection (item 90) | October 2024 |
| Inspection interval (item 91) | 24 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 Buffalo County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Sth 54 over Mississippi River 08 | 1942 | 10,200 | Fair |
| Sth 54 over Bn RR | 1941 | 10,200 | Fair |
| Sth 35-sth 54 over Chicken Valley Creek | 1980 | 7,800 | Good |
| Ush 10-sth 37-main over Brown Lee Creek | 1991 | 7,500 | Fair |
| Sth 35 over Mississippi River Tribut | 2023 | 5,500 | Good |
| Sth 35-main St over Mississippi River Tribut | 2023 | 5,500 | Good |
All bridges nearby: Buffalo County, WI bridge conditions · every bridge in Buffalo County · Wisconsin bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.