Lafayette County Bridge Report Card
Lafayette County scores 77 out of 100 on BridgeLookup's Bridge Condition Exposure Score, based on FHWA National Bridge Inventory records.
Lafayette County, Missouri
Lafayette County has 239 bridges in the National Bridge Inventory, with 10 rated poor and 0 rated scour-critical. Its poor-condition share of 4.2% is at or below the 8.8% statewide average. Poor-condition bridges carry about 90,518 daily vehicle crossings.
Quote-Ready Local Facts
Copyable Facts for Reporters
BridgeLookup.com gives Lafayette County a Bridge Condition Exposure Score of 77/100 (C). The county has 239 bridges in the National Bridge Inventory, including 10 in poor condition and 0 rated scour-critical. Poor-condition bridges carry about 90,518 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 | 4.2% | 8.4 |
| Poor-condition traffic exposure | 25 | 19.4% of measured traffic | 14.6 |
| Scour-critical bridge share | 20 | 0.0% | 0.0 |
| Average age vs national baseline | 10 | 44 years vs 48 nationally | 0.0 |
| Traffic-data completeness | 5 | 465,769 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 | 4.2% |
| State Poor-Condition Share | 8.8% |
| National Poor-Condition Share | 6.7% |
| County Scour-Critical Share | 0.0% |
| Average Bridge Age | 44 years |
| Poor-Condition Traffic Exposure | 90,518 vehicles/day |
Bridges to Watch
Top Bridges to Watch in Lafayette County
| Bridge | Reason | Condition | Daily Traffic | Year Built |
|---|---|---|---|---|
| Is 70 W over Lt Hrshoe CR | Poor condition + traffic exposure | Poor | 22,696 | 1963 |
| Is 70 W over Kcs Rr | Poor condition + traffic exposure | Poor | 17,593 | 1963 |
| Is 70 E over Kcs Rr | Poor condition + traffic exposure | Poor | 17,483 | 1950 |
| Is 70 E over Davis CR | Poor condition + traffic exposure | Poor | 16,239 | 1963 |
| Mo 131 S over Is 70 | Poor condition + traffic exposure | Poor | 7,100 | 1963 |
| RT D S over Is 70 | Poor condition + traffic exposure | Poor | 4,531 | 1963 |
| Mo 20 E over CR | Poor condition + traffic exposure | Poor | 1,791 | 1928 |
| Mo 20 E over Salt Fk CR | Poor condition + traffic exposure | Poor | 1,619 | 1969 |
| RT Y S over Is 70 | Poor condition + traffic exposure | Poor | 924 | 1960 |
| RT U E over Blackjack CR | Poor condition + traffic exposure | Poor | 542 | 1958 |
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.