Door County Bridge Report Card
Door County scores 94 out of 100 on BridgeLookup's Bridge Condition Exposure Score, based on FHWA National Bridge Inventory records.
Door County, Wisconsin
Door County has 33 bridges in the National Bridge Inventory, with 1 rated poor and 0 rated scour-critical. Its poor-condition share of 3.0% is at or below the 6.7% statewide average. Poor-condition bridges carry about 235 daily vehicle crossings.
Quote-Ready Local Facts
Copyable Facts for Reporters
BridgeLookup.com gives Door County a Bridge Condition Exposure Score of 94/100 (A). The county has 33 bridges in the National Bridge Inventory, including 1 in poor condition and 0 rated scour-critical. Poor-condition bridges carry about 235 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 | 3.0% | 6.1 |
| Poor-condition traffic exposure | 25 | 0.1% of measured traffic | 0.1 |
| Scour-critical bridge share | 20 | 0.0% | 0.0 |
| Average age vs national baseline | 10 | 39 years vs 48 nationally | 0.0 |
| Traffic-data completeness | 5 | 188,111 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 | 3.0% |
| State Poor-Condition Share | 6.7% |
| National Poor-Condition Share | 6.7% |
| County Scour-Critical Share | 0.0% |
| Average Bridge Age | 39 years |
| Poor-Condition Traffic Exposure | 235 vehicles/day |
Bridges to Watch
Top Bridges to Watch in Door County
| Bridge | Reason | Condition | Daily Traffic | Year Built |
|---|---|---|---|---|
| Cth N over Green Bay Tributary | Poor condition + traffic exposure | Poor | 235 | 1965 |
| Sth 42 - Sth 57 over Sturgeon Bay | High traffic | Fair | 14,200 | 1978 |
| Sth 42 - Sth 57 over Sturgeon Bay | High traffic | Fair | 12,500 | 1978 |
| Sth 42 - Sth 57 over Sturgeon Bay | High traffic | Fair | 12,500 | 1978 |
| Sth 42 - Sth 57 over Sturgeon Bay | High traffic | Fair | 12,500 | 1978 |
| Sth 42 - Sth 57 over Lrd Memorial DR | High traffic | Fair | 12,500 | 1978 |
| Sth 57 NB over Fabry CR | High traffic | Fair | 11,200 | 2008 |
| Lrd Michigan Stree over Sturgeon Bay | High traffic | Good | 8,300 | 1930 |
| Lrd Michigan Stree over Sturgeon Bay | High traffic | Fair | 8,300 | 1930 |
| Lrd Michigan Stree over Sturgeon Bay | High traffic | Fair | 8,300 | 1930 |
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.