Lake County Bridge Report Card
Lake County scores 68 out of 100 on BridgeLookup's Bridge Condition Exposure Score, based on FHWA National Bridge Inventory records.
Lake County, Minnesota
Lake County has 90 bridges in the National Bridge Inventory, with 11 rated poor and 2 rated scour-critical. Its poor-condition share of 12.2% is above the 4.5% statewide average. Poor-condition bridges carry about 3,710 daily vehicle crossings.
Quote-Ready Local Facts
Copyable Facts for Reporters
BridgeLookup.com gives Lake County a Bridge Condition Exposure Score of 68/100 (D). The county has 90 bridges in the National Bridge Inventory, including 11 in poor condition and 2 rated scour-critical. Poor-condition bridges carry about 3,710 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 | 12.2% | 24.4 |
| Poor-condition traffic exposure | 25 | 3.8% of measured traffic | 2.9 |
| Scour-critical bridge share | 20 | 2.2% | 4.4 |
| Average age vs national baseline | 10 | 42 years vs 48 nationally | 0.0 |
| Traffic-data completeness | 5 | 96,930 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 | 12.2% |
| State Poor-Condition Share | 4.5% |
| National Poor-Condition Share | 6.7% |
| County Scour-Critical Share | 2.2% |
| Average Bridge Age | 42 years |
| Poor-Condition Traffic Exposure | 3,710 vehicles/day |
Bridges to Watch
Top Bridges to Watch in Lake County
| Bridge | Reason | Condition | Daily Traffic | Year Built |
|---|---|---|---|---|
| Csah 34 over Stony River | Poor condition + traffic exposure | Poor | 137 | 1972 |
| Mn 61 over Manitou River | Poor condition + traffic exposure | Poor | 3,000 | 1956 |
| CR 102 over Knife River | Poor condition + traffic exposure | Poor | 232 | 1974 |
| Csah 7 over Nine Mile Creek | Poor condition + traffic exposure | Poor | 110 | 1947 |
| Spr 20 over Baptism River | Poor condition + traffic exposure | Poor | 100 | 1923 |
| L.isabella R. Road over L.isabella River | Poor condition + traffic exposure | Poor | 50 | 1974 |
| CR 705 over Harriet Creek | Poor condition + traffic exposure | Poor | 36 | 1967 |
| Csah 8 over Caribou River | Poor condition + traffic exposure | Poor | 32 | 1979 |
| Victor Lake Road over Little Isabella River | Poor condition + traffic exposure | Poor | 5 | 1975 |
| Tomahawk Road over Island River | Poor condition + traffic exposure | Poor | 4 | 1954 |
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.