Lucas County Bridge Report Card
Lucas County scores 52 out of 100 on BridgeLookup's Bridge Condition Exposure Score, based on FHWA National Bridge Inventory records.
Lucas County, Iowa
Lucas County has 198 bridges in the National Bridge Inventory, with 65 rated poor and 2 rated scour-critical. Its poor-condition share of 32.8% is above the 18.6% statewide average. Poor-condition bridges carry about 4,791 daily vehicle crossings.
Quote-Ready Local Facts
Copyable Facts for Reporters
BridgeLookup.com gives Lucas County a Bridge Condition Exposure Score of 52/100 (F). The county has 198 bridges in the National Bridge Inventory, including 65 in poor condition and 2 rated scour-critical. Poor-condition bridges carry about 4,791 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 | 32.8% | 40.0 |
| Poor-condition traffic exposure | 25 | 7.9% of measured traffic | 5.9 |
| Scour-critical bridge share | 20 | 1.0% | 2.0 |
| Average age vs national baseline | 10 | 48 years vs 48 nationally | 0.1 |
| Traffic-data completeness | 5 | 60,927 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 | 32.8% |
| State Poor-Condition Share | 18.6% |
| National Poor-Condition Share | 6.7% |
| County Scour-Critical Share | 1.0% |
| Average Bridge Age | 48 years |
| Poor-Condition Traffic Exposure | 4,791 vehicles/day |
Bridges to Watch
Top Bridges to Watch in Lucas County
| Bridge | Reason | Condition | Daily Traffic | Year Built |
|---|---|---|---|---|
| Local over Br Of Carruthers Creek | Poor condition + traffic exposure | Poor | 11 | 1900 |
| Local over Stony Fork | Poor condition + traffic exposure | Poor | 5 | 1951 |
| S23 200th AVE over Bnsf Rr | Poor condition + traffic exposure | Poor | 1,090 | 1937 |
| FM over Br Of English Creek | Poor condition + traffic exposure | Poor | 880 | 1963 |
| FM over Little Whitebreast Creek | Poor condition + traffic exposure | Poor | 490 | 1974 |
| FM over White Breast Creek | Poor condition + traffic exposure | Poor | 440 | 1957 |
| S23 200th AVE over Stony Fork | Poor condition + traffic exposure | Poor | 400 | 1969 |
| FM over Chariton River | Poor condition + traffic exposure | Poor | 310 | 1970 |
| FM over Br To Whitebreast Creek | Poor condition + traffic exposure | Poor | 90 | 1958 |
| Local over Br Carruthers Creek | Poor condition + traffic exposure | Poor | 82 | 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.