Webster County Bridge Report Card
Webster County scores 41 out of 100 on BridgeLookup's Bridge Condition Exposure Score, based on FHWA National Bridge Inventory records.
Webster County, Iowa
Webster County has 190 bridges in the National Bridge Inventory, with 48 rated poor and 1 rated scour-critical. Its poor-condition share of 25.3% is above the 18.6% statewide average. Poor-condition bridges carry about 62,089 daily vehicle crossings.
Quote-Ready Local Facts
Copyable Facts for Reporters
BridgeLookup.com gives Webster County a Bridge Condition Exposure Score of 41/100 (F). The county has 190 bridges in the National Bridge Inventory, including 48 in poor condition and 1 rated scour-critical. Poor-condition bridges carry about 62,089 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 | 25.3% | 40.0 |
| Poor-condition traffic exposure | 25 | 23.5% of measured traffic | 17.7 |
| Scour-critical bridge share | 20 | 0.5% | 1.1 |
| Average age vs national baseline | 10 | 42 years vs 48 nationally | 0.0 |
| Traffic-data completeness | 5 | 263,769 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 | 25.3% |
| State Poor-Condition Share | 18.6% |
| National Poor-Condition Share | 6.7% |
| County Scour-Critical Share | 0.5% |
| Average Bridge Age | 42 years |
| Poor-Condition Traffic Exposure | 62,089 vehicles/day |
Bridges to Watch
Top Bridges to Watch in Webster County
| Bridge | Reason | Condition | Daily Traffic | Year Built |
|---|---|---|---|---|
| Local over Knack Creek | Poor condition + traffic exposure | Poor | 46 | 1915 |
| 5th AVE over Drainage Ditch | Poor condition + traffic exposure | Poor | 8,894 | 1955 |
| N 15th ST over Soldier Creek | Poor condition + traffic exposure | Poor | 8,798 | 1974 |
| E Hawkeye AVE over Des Moines River | Poor condition + traffic exposure | Poor | 6,875 | 1987 |
| North 3rd ST over Soldier Creek & Trail | Poor condition + traffic exposure | Poor | 5,768 | 1961 |
| N 7th ST over Soldier Creek | Poor condition + traffic exposure | Poor | 5,546 | 1995 |
| US 169 over Bass Creek | Poor condition + traffic exposure | Poor | 4,680 | 1958 |
| FM over Soldier CR (dd No 247) | Poor condition + traffic exposure | Poor | 2,364 | 1974 |
| FM over Dd No 247 | Poor condition + traffic exposure | Poor | 2,284 | 1974 |
| FM over Drainage | Poor condition + traffic exposure | Poor | 1,795 | 1977 |
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.