Sth 59 over Sth 11-sth 81
Green County, Wisconsin · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Sth 59 over Sth 11-sth 81 in Green 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 1978, making it 47 years old at the 2025 inventory.
- It carries about 3,300 vehicles a day (traffic count year 2022).
- Its listed owner is the state highway agency.
- It is one of 96 of the 241 inventoried bridges in Green County rated fair (39.8%); 24 (10.0%) 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 February 2023, 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 → (42.60818, -89.61958)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 6 | 6 | Satisfactory condition |
| Superstructure | 6 | 6 | Satisfactory condition |
| Substructure | 6 | 6 | Satisfactory condition |
Bridge details
| Structure | Continuous steel stringer or multi-beam girder |
| Length | about 263 ft |
| Location | at Jct Sth 11 |
| NBI structure number | B23003700000000 |
| Condition class | Fair |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | February 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 Green County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Sth 69 Sb-sth 81 E over Sth 11 | 1969 | 10,000 | Fair |
| Sth 69 over Little Sugar River | 1990 | 8,400 | Good |
| Sth 69 over Legler School Branch | 1956 | 7,900 | Fair |
| Sth 11-sth 81 over Riley School Branch | 1971 | 7,800 | Good |
| Sth 11-sth 81 over Sugar River | 1975 | 7,800 | Fair |
| Lrd 4TH Ave West over Honey Creek | 1979 | 7,490 | Fair |
All bridges nearby: Green County, WI bridge conditions · every bridge in Green County · Wisconsin bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.