Macon County Bridge Report Card
Macon County scores 78 out of 100 on BridgeLookup's Bridge Condition Exposure Score, based on FHWA National Bridge Inventory records.
Macon County, Missouri
Macon County has 291 bridges in the National Bridge Inventory, with 20 rated poor and 4 rated scour-critical. Its poor-condition share of 6.9% is at or below the 8.8% statewide average. Poor-condition bridges carry about 15,058 daily vehicle crossings.
Quote-Ready Local Facts
Copyable Facts for Reporters
BridgeLookup.com gives Macon County a Bridge Condition Exposure Score of 78/100 (C). The county has 291 bridges in the National Bridge Inventory, including 20 in poor condition and 4 rated scour-critical. Poor-condition bridges carry about 15,058 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 | 6.9% | 13.7 |
| Poor-condition traffic exposure | 25 | 6.7% of measured traffic | 5.0 |
| Scour-critical bridge share | 20 | 1.4% | 2.7 |
| Average age vs national baseline | 10 | 39 years vs 48 nationally | 0.0 |
| Traffic-data completeness | 5 | 224,780 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 | 6.9% |
| State Poor-Condition Share | 8.8% |
| National Poor-Condition Share | 6.7% |
| County Scour-Critical Share | 1.4% |
| Average Bridge Age | 39 years |
| Poor-Condition Traffic Exposure | 15,058 vehicles/day |
Bridges to Watch
Top Bridges to Watch in Macon County
| Bridge | Reason | Condition | Daily Traffic | Year Built |
|---|---|---|---|---|
| Old HWY 36 over Mid Fk Chariton Rv | Poor condition + traffic exposure | Poor | 35 | 1925 |
| US 63 S over US 36 | Poor condition + traffic exposure | Poor | 12,582 | 1971 |
| RT Pp E over Mid Fk Salt Rvr | Poor condition + traffic exposure | Poor | 824 | 1958 |
| RT J E over E Fk Chariton Rvr | Poor condition + traffic exposure | Poor | 790 | 1930 |
| RT Uu S over Bnsf Rr | Poor condition + traffic exposure | Poor | 160 | 1947 |
| RT J E over Mussel Fk | Poor condition + traffic exposure | Poor | 127 | 1958 |
| Old HWY 36 over Sand Br | Poor condition + traffic exposure | Poor | 100 | 1924 |
| Linn ST over Unnamed Str | Poor condition + traffic exposure | Poor | 100 | 1938 |
| RT F S over Lit Turkey CR | Poor condition + traffic exposure | Poor | 81 | 1960 |
| RT Vv S over Bnsf Rr | Poor condition + traffic exposure | Poor | 64 | 1929 |
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.