Ih Ush 51-ih 39 NB over Ush Bus 51 & R.R.
Marathon County, Wisconsin · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Ih Ush 51-ih 39 NB over Ush Bus 51 & R.R. in Marathon County, Wisconsin, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the substructure, rated 6 (satisfactory condition) on the 0-9 scale.
- It was built in 2012, making it 13 years old at the 2025 inventory.
- It carries about 39,600 vehicles a day (traffic count year 2022).
- Its listed owner is the state highway agency.
- It is one of 288 of the 531 inventoried bridges in Marathon County rated fair (54.2%); 40 (7.5%) are rated poor.
- Its traffic status in the 2025 inventory is open, no restriction (NBI item 41).
- Its condition class and component ratings are unchanged from the 2024 inventory.
- Its most recent inspection on record is dated June 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 → (44.86342, -89.64117)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 7 | 7 | Good condition |
| Superstructure | 8 | 8 | Very good condition |
| Substructure | 6 | 6 | Satisfactory condition |
Bridge details
| Structure | Continuous prestressed concrete stringer or multi-beam girder |
| Length | about 300 ft |
| Location | at Intersection |
| NBI structure number | B37039600000000 |
| Condition class | Fair |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | June 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 Marathon County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Ih 39 Sb/ush 51 over Ush Bus 51 | 2013 | 39,600 | Good |
| Ush 51NB over Lrd Stewart Ave | 2009 | 38,600 | Good |
| Ush 51 SB over Lrd Hwy 52 Parkway | 2007 | 38,600 | Good |
| Ih Ush 51-ih 39 SB over Wisconsin River 26 | 1968 | 37,700 | Good |
| Ush 51 NB over Lrd Sherman St | 2007 | 34,100 | Good |
| Ush 51SB over Lrd Sherman Ave | 2007 | 34,100 | Good |
All bridges nearby: Marathon County, WI bridge conditions · every bridge in Marathon County · Wisconsin bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.