Waukesha County Bridge Report Card
Waukesha County scores 78 out of 100 on BridgeLookup's Bridge Condition Exposure Score, based on FHWA National Bridge Inventory records.
Waukesha County, Wisconsin
Waukesha County has 370 bridges in the National Bridge Inventory, with 20 rated poor and 19 rated scour-critical. Its poor-condition share of 5.4% is at or below the 6.7% statewide average. Poor-condition bridges carry about 64,574 daily vehicle crossings.
Quote-Ready Local Facts
Copyable Facts for Reporters
BridgeLookup.com gives Waukesha County a Bridge Condition Exposure Score of 78/100 (C). The county has 370 bridges in the National Bridge Inventory, including 20 in poor condition and 19 rated scour-critical. Poor-condition bridges carry about 64,574 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 | 5.4% | 10.8 |
| Poor-condition traffic exposure | 25 | 1.3% of measured traffic | 1.0 |
| Scour-critical bridge share | 20 | 5.1% | 10.3 |
| Average age vs national baseline | 10 | 40 years vs 48 nationally | 0.0 |
| Traffic-data completeness | 5 | 4,852,608 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 | 5.4% |
| State Poor-Condition Share | 6.7% |
| National Poor-Condition Share | 6.7% |
| County Scour-Critical Share | 5.1% |
| Average Bridge Age | 40 years |
| Poor-Condition Traffic Exposure | 64,574 vehicles/day |
Bridges to Watch
Top Bridges to Watch in Waukesha County
| Bridge | Reason | Condition | Daily Traffic | Year Built |
|---|---|---|---|---|
| Lrd Center DR over Fox River | Poor condition + traffic exposure | Poor | 490 | 1961 |
| Lrd Lapham ST over Oconomowoc River | Poor condition + traffic exposure | Poor | 101 | 1950 |
| Lrd Norwegian RD over Ashippun River | Poor condition + traffic exposure | Poor | 98 | 1929 |
| Cth F NB over IH 94 | Poor condition + traffic exposure | Poor | 17,650 | 1977 |
| Cth Vv WB (silver over Menomonee River | Poor condition + traffic exposure | Poor | 9,600 | 1964 |
| Cth C (genesee St) over IH 94 | Poor condition + traffic exposure | Poor | 9,000 | 1963 |
| Cth I (beloit Road over Calhoun Creek | Poor condition + traffic exposure | Poor | 9,000 | 1976 |
| Lrd Gebhardt RD over Dousman Ditch | Poor condition + traffic exposure | Poor | 5,100 | 1966 |
| Lrd Overview DR over Butler Ditch | Poor condition + traffic exposure | Poor | 2,837 | 1988 |
| Lrd Campbell DR over Butler Ditch | Poor condition + traffic exposure | Poor | 2,837 | 1988 |
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.