Norman County Bridge Report Card
Norman County scores 94 out of 100 on BridgeLookup's Bridge Condition Exposure Score, based on FHWA National Bridge Inventory records.
Norman County, Minnesota
Norman County has 149 bridges in the National Bridge Inventory, with 4 rated poor and 0 rated scour-critical. Its poor-condition share of 2.7% is at or below the 4.5% statewide average. Poor-condition bridges carry about 246 daily vehicle crossings.
Quote-Ready Local Facts
Copyable Facts for Reporters
BridgeLookup.com gives Norman County a Bridge Condition Exposure Score of 94/100 (A). The county has 149 bridges in the National Bridge Inventory, including 4 in poor condition and 0 rated scour-critical. Poor-condition bridges carry about 246 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 | 2.7% | 5.4 |
| Poor-condition traffic exposure | 25 | 0.6% of measured traffic | 0.4 |
| Scour-critical bridge share | 20 | 0.0% | 0.0 |
| Average age vs national baseline | 10 | 42 years vs 48 nationally | 0.0 |
| Traffic-data completeness | 5 | 41,788 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 | 2.7% |
| State Poor-Condition Share | 4.5% |
| National Poor-Condition Share | 6.7% |
| County Scour-Critical Share | 0.0% |
| Average Bridge Age | 42 years |
| Poor-Condition Traffic Exposure | 246 vehicles/day |
Bridges to Watch
Top Bridges to Watch in Norman County
| Bridge | Reason | Condition | Daily Traffic | Year Built |
|---|---|---|---|---|
| Csah 25 over Red River Of The North | Poor condition + traffic exposure | Poor | 175 | 1952 |
| CR 113 over Marsh River | Poor condition + traffic exposure | Poor | 36 | 1920 |
| CR 146 over Co Ditch # 18 | Poor condition + traffic exposure | Poor | 30 | 1966 |
| T 258 over Jud Ditch # 53 Lat # 2 | Poor condition + traffic exposure | Poor | 5 | 1961 |
| Mn 9 over Marsh River | High traffic | Fair | 1,650 | 1948 |
| Mn 9 over Co Ditch # 37 | High traffic | Fair | 1,650 | 1948 |
| Mn 9 over S Br Wild Rice River | High traffic | Fair | 1,650 | 1979 |
| Mn 9 over Wild Rice River | High traffic | Fair | 1,650 | 2016 |
| US 75 over Co Ditch # 1 | High traffic | Good | 1,637 | 1986 |
| Mn 200 over Jud Ditch # 51 | High traffic | Fair | 1,632 | 2001 |
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.