Iron County Bridge Report Card
Iron County scores 71 out of 100 on BridgeLookup's Bridge Condition Exposure Score, based on FHWA National Bridge Inventory records.
Iron County, Wisconsin
Iron County has 48 bridges in the National Bridge Inventory, with 2 rated poor and 5 rated scour-critical. Its poor-condition share of 4.2% is at or below the 6.7% statewide average. Poor-condition bridges carry about 149 daily vehicle crossings.
Quote-Ready Local Facts
Copyable Facts for Reporters
BridgeLookup.com gives Iron County a Bridge Condition Exposure Score of 71/100 (C). The county has 48 bridges in the National Bridge Inventory, including 2 in poor condition and 5 rated scour-critical. Poor-condition bridges carry about 149 daily vehicle crossings. Poor condition does not mean unsafe; bridges judged unsafe are closed or restricted by transportation agencies.
How the Score Breaks Down
| Factor | Weight | County Value | Penalty |
|---|---|---|---|
| Poor-condition bridge share | 40 | 4.2% | 8.3 |
| Poor-condition traffic exposure | 25 | 0.3% of measured traffic | 0.3 |
| Scour-critical bridge share | 20 | 10.4% | 20.0 |
| Average age vs national baseline | 10 | 39 years vs 48 nationally | 0.0 |
| Traffic-data completeness | 5 | 44,653 measured daily crossings | 0.0 |
Score = 100 minus weighted penalties. The score is a comparative research signal, not an official safety rating. Read the full methodology.
County Comparisons
| County Poor-Condition Share | 4.2% |
| State Poor-Condition Share | 6.7% |
| National Poor-Condition Share | 6.7% |
| County Scour-Critical Share | 10.4% |
| Average Bridge Age | 39 years |
| Poor-Condition Traffic Exposure | 149 vehicles/day |
Bridges to Watch
Top Bridges to Watch in Iron County
| Bridge | Reason | Condition | Daily Traffic | Year Built |
|---|---|---|---|---|
| Lrd Town Park DR ( over W Br Montreal River | Poor condition + traffic exposure | Poor | 99 | 1957 |
| IRR BIA RTE 10 over Flambeau Bear River | Poor condition + traffic exposure | Poor | 50 | 1932 |
| Lrd Center DR over W Br Montreal River | Scour-critical foundation rating | Fair | 157 | 1912 |
| Lrd Sandy Beach Ro over Lost Creek | Scour-critical foundation rating | Fair | 120 | 1930 |
| Lrd Clement RD (de over Lawerence Creek | Scour-critical foundation rating | Fair | 40 | 1924 |
| Lrd Many Rocks Roa over Black Lake Thoroughfare | Scour-critical foundation rating | Fair | 32 | 1970 |
| Lrd Apple Creek RD over Potato River | Scour-critical foundation rating | Good | 22 | 2018 |
| Lrd Poplar ST over Montreal River | High traffic | Fair | 5,593 | 2010 |
| Sth 77-silver ST over Montreal River | High traffic | Fair | 4,900 | 1965 |
| Ush 2 over Soo Line/vaughn Creek | High traffic | Good | 4,300 | 1976 |
Important safety note
Poor condition does not mean a bridge is unsafe. It means at least one major component has significant deterioration and the bridge is a priority for maintenance, repair, or replacement. Bridges judged unsafe are closed or restricted by transportation agencies.