Buchanan County Bridge Report Card
Buchanan County scores 78 out of 100 on BridgeLookup's Bridge Condition Exposure Score, based on FHWA National Bridge Inventory records.
Buchanan County, Missouri
Buchanan County has 246 bridges in the National Bridge Inventory, with 19 rated poor and 0 rated scour-critical. Its poor-condition share of 7.7% is at or below the 8.8% statewide average. Poor-condition bridges carry about 80,073 daily vehicle crossings.
Quote-Ready Local Facts
Copyable Facts for Reporters
BridgeLookup.com gives Buchanan County a Bridge Condition Exposure Score of 78/100 (C). The county has 246 bridges in the National Bridge Inventory, including 19 in poor condition and 0 rated scour-critical. Poor-condition bridges carry about 80,073 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 | 7.7% | 15.4 |
| Poor-condition traffic exposure | 25 | 8.7% of measured traffic | 6.5 |
| 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 | 925,300 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 | 7.7% |
| 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 | 80,073 vehicles/day |
Bridges to Watch
Top Bridges to Watch in Buchanan County
| Bridge | Reason | Condition | Daily Traffic | Year Built |
|---|---|---|---|---|
| US 36 E over Lp 29 | Poor condition + traffic exposure | Poor | 20,009 | 1961 |
| US 36 E over Is 229 Cst 6th ST Is | Poor condition + traffic exposure | Poor | 16,400 | 1951 |
| RT Ac S over US 36 | Poor condition + traffic exposure | Poor | 10,927 | 1973 |
| Is 229 S over Cst Mcarthur DR Cst Mon | Poor condition + traffic exposure | Poor | 10,163 | 1976 |
| Is 229 N over Is 229 Cst 4th ST Cs | Poor condition + traffic exposure | Poor | 8,403 | 1976 |
| Gene Field RD E over Is 29 | Poor condition + traffic exposure | Poor | 7,186 | 1962 |
| Is 229 S over US 59 Cst Atchison ST | Poor condition + traffic exposure | Poor | 2,956 | 1979 |
| RT Dd E over E Fk Of Bee CR | Poor condition + traffic exposure | Poor | 1,716 | 1970 |
| Rp Charles ST To I over Bnsf Rr | Poor condition + traffic exposure | Poor | 1,587 | 1979 |
| RT Mm S over Rock CR | Poor condition + traffic exposure | Poor | 420 | 1948 |
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.