Brown County Bridge Report Card
Brown County scores 86 out of 100 on BridgeLookup's Bridge Condition Exposure Score, based on FHWA National Bridge Inventory records.
Brown County, Wisconsin
Brown County has 473 bridges in the National Bridge Inventory, with 21 rated poor and 10 rated scour-critical. Its poor-condition share of 4.4% is at or below the 6.7% statewide average. Poor-condition bridges carry about 52,577 daily vehicle crossings.
Quote-Ready Local Facts
Copyable Facts for Reporters
BridgeLookup.com gives Brown County a Bridge Condition Exposure Score of 86/100 (B). The county has 473 bridges in the National Bridge Inventory, including 21 in poor condition and 10 rated scour-critical. Poor-condition bridges carry about 52,577 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 | 4.4% | 8.9 |
| Poor-condition traffic exposure | 25 | 0.8% of measured traffic | 0.6 |
| Scour-critical bridge share | 20 | 2.1% | 4.2 |
| Average age vs national baseline | 10 | 35 years vs 48 nationally | 0.0 |
| Traffic-data completeness | 5 | 6,843,028 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 | 4.4% |
| State Poor-Condition Share | 6.7% |
| National Poor-Condition Share | 6.7% |
| County Scour-Critical Share | 2.1% |
| Average Bridge Age | 35 years |
| Poor-Condition Traffic Exposure | 52,577 vehicles/day |
Bridges to Watch
Top Bridges to Watch in Brown County
| Bridge | Reason | Condition | Daily Traffic | Year Built |
|---|---|---|---|---|
| Lrd Grand View RD over Baird Creek | Poor condition + traffic exposure | Poor | 323 | 1970 |
| Lrd Hill RD over Branch River | Poor condition + traffic exposure | Poor | 94 | 1909 |
| Lrd Taylor ST over Beaver Creek | Poor condition + traffic exposure | Poor | 9,300 | 1970 |
| Cth Ee over Ashwaubenon Creek | Poor condition + traffic exposure | Poor | 8,200 | 1965 |
| Cth X over East River | Poor condition + traffic exposure | Poor | 6,800 | 1982 |
| Lrd Henry ST over Baird Creek | Poor condition + traffic exposure | Poor | 6,180 | 1970 |
| Cth Ff Hillcrest over Duck Creek | Poor condition + traffic exposure | Poor | 4,300 | 1968 |
| Cth Mm Dutchman R over Sorensons Creek | Poor condition + traffic exposure | Poor | 3,000 | 2004 |
| Cth D over Br Plum Creek | Poor condition + traffic exposure | Poor | 2,600 | 1986 |
| Lrd Glory RD over Unknown Creek | Poor condition + traffic exposure | Poor | 2,500 | 1990 |
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.