Greene County Bridge Report Card
Greene County scores 64 out of 100 on BridgeLookup's Bridge Condition Exposure Score, based on FHWA National Bridge Inventory records.
Greene County, Iowa
Greene County has 168 bridges in the National Bridge Inventory, with 25 rated poor and 1 rated scour-critical. Its poor-condition share of 14.9% is at or below the 18.6% statewide average. Poor-condition bridges carry about 3,678 daily vehicle crossings.
Quote-Ready Local Facts
Copyable Facts for Reporters
BridgeLookup.com gives Greene County a Bridge Condition Exposure Score of 64/100 (D). The county has 168 bridges in the National Bridge Inventory, including 25 in poor condition and 1 rated scour-critical. Poor-condition bridges carry about 3,678 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 | 14.9% | 29.8 |
| Poor-condition traffic exposure | 25 | 5.2% of measured traffic | 3.9 |
| Scour-critical bridge share | 20 | 0.6% | 1.2 |
| Average age vs national baseline | 10 | 51 years vs 48 nationally | 1.4 |
| Traffic-data completeness | 5 | 71,358 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 | 14.9% |
| State Poor-Condition Share | 18.6% |
| National Poor-Condition Share | 6.7% |
| County Scour-Critical Share | 0.6% |
| Average Bridge Age | 51 years |
| Poor-Condition Traffic Exposure | 3,678 vehicles/day |
Bridges to Watch
Top Bridges to Watch in Greene County
| Bridge | Reason | Condition | Daily Traffic | Year Built |
|---|---|---|---|---|
| S Grimmell RD over Raccoon River | Poor condition + traffic exposure | Poor | 1,572 | 1947 |
| 330 TH / E63 over Drainage Ditch 9-13 | Poor condition + traffic exposure | Poor | 379 | 1970 |
| 222nd ST over West Beaver Creek | Poor condition + traffic exposure | Poor | 300 | 1921 |
| A AVE over Dd 150-86 | Poor condition + traffic exposure | Poor | 293 | 1964 |
| 170 TH / E26 over Drainage Ditch 110 | Poor condition + traffic exposure | Poor | 229 | 1963 |
| J AVE / P14 over Greenbrier Creek | Poor condition + traffic exposure | Poor | 190 | 1971 |
| A AVE / N58 over Raccoon River | Poor condition + traffic exposure | Poor | 131 | 1950 |
| 290 TH / E57 over Snake Creek | Poor condition + traffic exposure | Poor | 108 | 1959 |
| 290 TH / E57 over Willow Creek | Poor condition + traffic exposure | Poor | 89 | 1953 |
| 230 TH over Stream | Poor condition + traffic exposure | Poor | 46 | 1957 |
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.