Sth 139 over Nicolet State Trail
Florence County, Wisconsin · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Sth 139 over Nicolet State Trail in Florence County, Wisconsin, is rated in good condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the superstructure, rated 7 (good condition) on the 0-9 scale.
- It was built in 1976 and reconstructed in 2022, making it 49 years old at the 2025 inventory.
- It carries about 720 vehicles a day (traffic count year 2021).
- Its listed owner is the state highway agency.
- It is one of 9 of the 20 inventoried bridges in Florence County rated good (45.0%); 1 (5.0%) 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 September 2023, on a 24-month routine inspection cycle.
- A good rating means every major component - deck, superstructure, substructure, or culvert - is rated 7 or higher on FHWA's 0-9 scale: no more than minor problems.
View this bridge on a map → (45.86156, -88.65394)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 8 | 8 | Very good condition |
| Superstructure | 7 | 7 | Good condition |
| Substructure | 7 | 7 | Good condition |
Bridge details
| Structure | Continuous prestressed concrete stringer or multi-beam girder |
| Length | about 142 ft |
| Location | 14.2M N Jct Cth O |
| NBI structure number | B19000400000000 |
| Condition class | Good |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | September 2023 |
| Inspection interval (item 91) | 24 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 Florence County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Ush 2-ush 141 over Menominee River | 1980 | 6,500 | Fair |
| Ush 2-ush 141 over Brule River | 1941 | 3,800 | Fair |
| Cth N over Menominee River | 1973 | 3,500 | Poor |
| Cth N over Little Popple River | 1997 | 1,504 | Fair |
| Sth 139 over Brule River | 1989 | 1,500 | Fair |
| Cth N over Pine River | 1998 | 1,302 | Good |
All bridges nearby: Florence County, WI bridge conditions · every bridge in Florence County · Wisconsin bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.