Scott County Bridge Report Card
Scott County scores 80 out of 100 on BridgeLookup's Bridge Condition Exposure Score, based on FHWA National Bridge Inventory records.
Scott County, Missouri
Scott County has 184 bridges in the National Bridge Inventory, with 15 rated poor and 1 rated scour-critical. Its poor-condition share of 8.2% is at or below the 8.8% statewide average. Poor-condition bridges carry about 17,013 daily vehicle crossings.
Quote-Ready Local Facts
Copyable Facts for Reporters
BridgeLookup.com gives Scott County a Bridge Condition Exposure Score of 80/100 (B). The county has 184 bridges in the National Bridge Inventory, including 15 in poor condition and 1 rated scour-critical. Poor-condition bridges carry about 17,013 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 | 8.2% | 16.3 |
| Poor-condition traffic exposure | 25 | 3.2% of measured traffic | 2.4 |
| Scour-critical bridge share | 20 | 0.5% | 1.1 |
| Average age vs national baseline | 10 | 47 years vs 48 nationally | 0.0 |
| Traffic-data completeness | 5 | 536,945 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 | 8.2% |
| State Poor-Condition Share | 8.8% |
| National Poor-Condition Share | 6.7% |
| County Scour-Critical Share | 0.5% |
| Average Bridge Age | 47 years |
| Poor-Condition Traffic Exposure | 17,013 vehicles/day |
Bridges to Watch
Top Bridges to Watch in Scott County
| Bridge | Reason | Condition | Daily Traffic | Year Built |
|---|---|---|---|---|
| Mo 77 S over Drain Dtch No 1 | Poor condition + traffic exposure | Poor | 4,733 | 1930 |
| Mo 77 S over Is 55 | Poor condition + traffic exposure | Poor | 4,440 | 1962 |
| RT Y E over Drain Dtch 2 Dist | Poor condition + traffic exposure | Poor | 1,703 | 1948 |
| RT Aa S over US 60 | Poor condition + traffic exposure | Poor | 1,664 | 1962 |
| Mo 91 S over Drain Dtch 1 Dist | Poor condition + traffic exposure | Poor | 743 | 1933 |
| Mo 91 S over Drain Dtch 4 Dist | Poor condition + traffic exposure | Poor | 743 | 1933 |
| RT Z S over Drain Dtch 1 Dist | Poor condition + traffic exposure | Poor | 626 | 1935 |
| RT Zz E over Drain Dtch 1 Dist | Poor condition + traffic exposure | Poor | 605 | 1948 |
| RT C E over ST Johns Drain Dtc | Poor condition + traffic exposure | Poor | 529 | 1959 |
| RT O S over North Cut Dtch | Poor condition + traffic exposure | Poor | 407 | 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.