Bridge conditions in Iron County, Wisconsin
48 inventoried bridges · 2 rated poor · 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
Iron County tracks close to typical: 2 of its 48 inventoried bridges (4.2%) are rated poor, against a national rate of about 7%.
- 2 of the 48 bridges in Iron County, Wisconsin, are rated in poor condition (4.2%) in the 2025 National Bridge Inventory, as of .
- 23 bridges (47.9%) are rated good and 23 (47.9%) fair.
- The median Iron County bridge was built in 1993.
- The busiest poor-rated bridge is Lrd Town Park Dr ( over W Br Montreal River (built 1957), carrying about 99 vehicles a day.
Good 47.9% · Fair 47.9% · Poor 4.2% of 48 bridges
Bridges rated poor
Every bridge in the county with a poor rating, busiest first. Poor means a major component is rated 4 or lower on FHWA's 0-9 scale; it is a repair flag, not a closure notice.
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Lrd Town Park Dr ( over W Br Montreal River | 1957 | 99 | Poor |
| Irr Bia Rte 10 over Flambeau Bear River | 1932 | 50 | Poor |
Busiest bridges in the county
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Lrd Poplar St over Montreal River | 2010 | 5,593 | Fair |
| Sth 77-silver St over Montreal River | 1965 | 4,900 | Fair |
| Ush 2 over Soo Line/vaughn Creek | 1976 | 4,300 | Good |
| Ush 2 over W Br Montreal River | 1974 | 3,500 | Good |
| Ush 2 WB over Montreal River | 1961 | 3,000 | Fair |
| Ush 2 EB over Montreal River | 1961 | 3,000 | Fair |
| Ush 51 over Laymans Creek | 1994 | 2,900 | Fair |
| Sth 77-wisconsin A over W Br Montreal River | 1981 | 2,700 | Fair |
| Ush 51 over Turtle River | 1981 | 2,200 | Fair |
| Ush 51 over Weber Creek | 2017 | 2,200 | Good |
Source: FHWA National Bridge Inventory, 2025. Counts cover inventoried highway bridges over 20 feet; ratings are reported by the state DOT.
All of Wisconsin: Wisconsin bridge conditions by county · every download on the data page.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.