Monroe County Bridge Report Card
Monroe County scores 66 out of 100 on BridgeLookup's Bridge Condition Exposure Score, based on FHWA National Bridge Inventory records.
Monroe County, Missouri
Monroe County has 175 bridges in the National Bridge Inventory, with 23 rated poor and 1 rated scour-critical. Its poor-condition share of 13.1% is above the 8.8% statewide average. Poor-condition bridges carry about 3,741 daily vehicle crossings.
Quote-Ready Local Facts
Copyable Facts for Reporters
BridgeLookup.com gives Monroe County a Bridge Condition Exposure Score of 66/100 (D). The county has 175 bridges in the National Bridge Inventory, including 23 in poor condition and 1 rated scour-critical. Poor-condition bridges carry about 3,741 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 | 13.1% | 26.3 |
| Poor-condition traffic exposure | 25 | 7.6% of measured traffic | 5.7 |
| Scour-critical bridge share | 20 | 0.6% | 1.1 |
| Average age vs national baseline | 10 | 50 years vs 48 nationally | 0.9 |
| Traffic-data completeness | 5 | 49,128 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 | 13.1% |
| State Poor-Condition Share | 8.8% |
| National Poor-Condition Share | 6.7% |
| County Scour-Critical Share | 0.6% |
| Average Bridge Age | 50 years |
| Poor-Condition Traffic Exposure | 3,741 vehicles/day |
Bridges to Watch
Top Bridges to Watch in Monroe County
| Bridge | Reason | Condition | Daily Traffic | Year Built |
|---|---|---|---|---|
| County RD 611 over Long Br | Poor condition + traffic exposure | Poor | 15 | 1910 |
| Mo 15 S over Mid Fk Salt Rvr | Poor condition + traffic exposure | Poor | 2,320 | 1985 |
| Mo 151 S over Small CR | Poor condition + traffic exposure | Poor | 465 | 1933 |
| W Hickory ST over Town Br | Poor condition + traffic exposure | Poor | 350 | 1900 |
| RT C S over Elk Fk Salt Rvr | Poor condition + traffic exposure | Poor | 131 | 1968 |
| County RD 390 over Indian CR | Poor condition + traffic exposure | Poor | 50 | 1916 |
| County RD 436 over Branch | Poor condition + traffic exposure | Poor | 50 | 1978 |
| County RD 370 over Branch | Poor condition + traffic exposure | Poor | 40 | 1935 |
| County RD 670 over Burbridge CR | Poor condition + traffic exposure | Poor | 35 | 1995 |
| County RD 859 over Long Branch CR | Poor condition + traffic exposure | Poor | 30 | 1910 |
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.