Boone County Bridge Report Card
Boone County scores 83 out of 100 on BridgeLookup's Bridge Condition Exposure Score, based on FHWA National Bridge Inventory records.
Boone County, Nebraska
Boone County has 237 bridges in the National Bridge Inventory, with 7 rated poor and 11 rated scour-critical. Its poor-condition share of 3.0% is at or below the 7.5% statewide average. Poor-condition bridges carry about 650 daily vehicle crossings.
Quote-Ready Local Facts
Copyable Facts for Reporters
BridgeLookup.com gives Boone County a Bridge Condition Exposure Score of 83/100 (B). The county has 237 bridges in the National Bridge Inventory, including 7 in poor condition and 11 rated scour-critical. Poor-condition bridges carry about 650 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% | 5.9 |
| Poor-condition traffic exposure | 25 | 1.0% of measured traffic | 0.7 |
| Scour-critical bridge share | 20 | 4.6% | 9.3 |
| Average age vs national baseline | 10 | 51 years vs 48 nationally | 1.2 |
| Traffic-data completeness | 5 | 66,987 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 | 7.5% |
| National Poor-Condition Share | 6.7% |
| County Scour-Critical Share | 4.6% |
| Average Bridge Age | 51 years |
| Poor-Condition Traffic Exposure | 650 vehicles/day |
Bridges to Watch
Top Bridges to Watch in Boone County
| Bridge | Reason | Condition | Daily Traffic | Year Built |
|---|---|---|---|---|
| Fas 2250 over Plum Creek | Poor condition + traffic exposure | Poor | 55 | 1984 |
| County Highway over Stream | Poor condition + traffic exposure | Poor | 10 | 1935 |
| N32 over North Shell Creek | Poor condition + traffic exposure | Poor | 455 | 1973 |
| 345th ST over Cedar River | Poor condition + traffic exposure | Poor | 40 | 1935 |
| County Highway over Bogus Creek | Poor condition + traffic exposure | Poor | 35 | 1935 |
| County Highway over North Shell Creek | Poor condition + traffic exposure | Poor | 30 | 1915 |
| 230th ST over Beaver Creek Trib | Poor condition + traffic exposure | Poor | 25 | 1935 |
| Fas 2585 over Oneill Valley | Scour-critical foundation rating | Fair | 105 | 1970 |
| Fas 2595 over Stream | Scour-critical foundation rating | Fair | 90 | 1935 |
| County Highway over Stream | Scour-critical foundation rating | Fair | 50 | 1985 |
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.