Sth 57 NB over Sth 54
Brown County, Wisconsin · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Sth 57 NB over Sth 54 in Brown 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 1999, making it 26 years old at the 2025 inventory.
- It carries about 18,900 vehicles a day (traffic count year 2022).
- Its listed owner is the state highway agency.
- It is one of 232 of the 473 inventoried bridges in Brown County rated fair (49.0%); 21 (4.4%) are rated poor.
- Its traffic status in the 2025 inventory is open, no restriction (NBI item 41).
- It was rated good in the 2024 inventory and is now fair (deck 7 to 6, substructure 7 to 6).
- Its most recent inspection on record is dated August 2024, on a 48-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 → (44.53814, -87.88039)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 7 | 6 | Satisfactory condition |
| Superstructure | 8 | 8 | Very good condition |
| Substructure | 7 | 6 | Satisfactory condition |
Bridge details
| Structure | Continuous concrete stringer or multi-beam girder |
| Length | about 176 ft |
| Location | 3.5M N Jct Cth A to N |
| NBI structure number | B05032300000000 |
| Condition class | Fair |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | August 2024 |
| Inspection interval (item 91) | 48 months |
| Scour (item 113) | N: not over a waterway |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Wisconsin department of transportation.
Busiest bridges in Brown County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Sth 172 over Sth57-riverside Dr-fox R | 1975 | 84,700 | Fair |
| Ih 41-sth 32 over Beaver Creek | 2012 | 83,900 | Good |
| Ih 41 over Dutchman CR | 2011 | 83,200 | Good |
| Ih 41 over Beaver Creek | 2011 | 82,500 | Good |
| Ih 41 over Ashwaubenon CR | 2012 | 74,600 | Good |
| Ih 41 over Beaver Creek | 2014 | 69,800 | Good |
All bridges nearby: Brown County, WI bridge conditions · every bridge in Brown County · Wisconsin bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.