Jasper County Bridge Report Card
Jasper County scores 49 out of 100 on BridgeLookup's Bridge Condition Exposure Score, based on FHWA National Bridge Inventory records.
Jasper County, Iowa
Jasper County has 382 bridges in the National Bridge Inventory, with 108 rated poor and 14 rated scour-critical. Its poor-condition share of 28.3% is above the 18.6% statewide average. Poor-condition bridges carry about 31,668 daily vehicle crossings.
Quote-Ready Local Facts
Copyable Facts for Reporters
BridgeLookup.com gives Jasper County a Bridge Condition Exposure Score of 49/100 (F). The county has 382 bridges in the National Bridge Inventory, including 108 in poor condition and 14 rated scour-critical. Poor-condition bridges carry about 31,668 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 | 28.3% | 40.0 |
| Poor-condition traffic exposure | 25 | 4.3% of measured traffic | 3.3 |
| Scour-critical bridge share | 20 | 3.7% | 7.3 |
| Average age vs national baseline | 10 | 47 years vs 48 nationally | 0.0 |
| Traffic-data completeness | 5 | 729,489 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 | 28.3% |
| State Poor-Condition Share | 18.6% |
| National Poor-Condition Share | 6.7% |
| County Scour-Critical Share | 3.7% |
| Average Bridge Age | 47 years |
| Poor-Condition Traffic Exposure | 31,668 vehicles/day |
Bridges to Watch
Top Bridges to Watch in Jasper County
| Bridge | Reason | Condition | Daily Traffic | Year Built |
|---|---|---|---|---|
| Local over North Skunk River | Poor condition + traffic exposure | Poor | 106 | 1936 |
| Rosebud AVE over Buck Creek | Poor condition + traffic exposure | Poor | 104 | 1919 |
| S12th AVE E over Small Stream | Poor condition + traffic exposure | Poor | 104 | 1921 |
| S 24th AVE E over Small Stream | Poor condition + traffic exposure | Poor | 104 | 1986 |
| W 36th ST S over Buck Creek | Poor condition + traffic exposure | Poor | 91 | 1928 |
| S 64th AVE E over Sugar Creek | Poor condition + traffic exposure | Poor | 45 | 1933 |
| Local over Indian Creek | Poor condition + traffic exposure | Poor | 35 | 1918 |
| Local over Small Stream | Poor condition + traffic exposure | Poor | 35 | 1974 |
| S 60th AVE W over Red Rock Creek | Poor condition + traffic exposure | Poor | 30 | 1926 |
| Local over Rock Creek | Poor condition + traffic exposure | Poor | 26 | 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.