Olmsted County Bridge Report Card
Olmsted County scores 96 out of 100 on BridgeLookup's Bridge Condition Exposure Score, based on FHWA National Bridge Inventory records.
Olmsted County, Minnesota
Olmsted County has 367 bridges in the National Bridge Inventory, with 5 rated poor and 2 rated scour-critical. Its poor-condition share of 1.4% is at or below the 4.5% statewide average. Poor-condition bridges carry about 10,695 daily vehicle crossings.
Quote-Ready Local Facts
Copyable Facts for Reporters
BridgeLookup.com gives Olmsted County a Bridge Condition Exposure Score of 96/100 (A). The county has 367 bridges in the National Bridge Inventory, including 5 in poor condition and 2 rated scour-critical. Poor-condition bridges carry about 10,695 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 | 1.4% | 2.7 |
| Poor-condition traffic exposure | 25 | 0.5% of measured traffic | 0.4 |
| Scour-critical bridge share | 20 | 0.5% | 1.1 |
| Average age vs national baseline | 10 | 40 years vs 48 nationally | 0.0 |
| Traffic-data completeness | 5 | 1,966,013 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 | 1.4% |
| State Poor-Condition Share | 4.5% |
| National Poor-Condition Share | 6.7% |
| County Scour-Critical Share | 0.5% |
| Average Bridge Age | 40 years |
| Poor-Condition Traffic Exposure | 10,695 vehicles/day |
Bridges to Watch
Top Bridges to Watch in Olmsted County
| Bridge | Reason | Condition | Daily Traffic | Year Built |
|---|---|---|---|---|
| Msas 135 over Elton Hills Ravine | Poor condition + traffic exposure | Poor | 3,650 | 1977 |
| Mn 247 over Silver Spring Creek | Poor condition + traffic exposure | Poor | 3,100 | 1938 |
| Csah 3 over Mid Fk Zumbro River | Poor condition + traffic exposure | Poor | 3,000 | 1959 |
| Csah 7 over Stream | Poor condition + traffic exposure | Poor | 870 | 1968 |
| Service RD over South Fork Zumbro River | Poor condition + traffic exposure | Poor | 75 | 1895 |
| M 87 over S Br Mid Fk Zumbro R | Scour-critical foundation rating | Good | 780 | 1985 |
| M 91 over Mid Fk Zumbro R | Scour-critical foundation rating | Good | 525 | 1985 |
| US 52 over Stream | High traffic | Good | 52,227 | 2005 |
| US 52 over Kings Run | High traffic | Fair | 52,227 | 2005 |
| US 52 over Cascade Creek | High traffic | Good | 46,000 | 2004 |
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.