Miami County Bridge Report Card
Miami County scores 72 out of 100 on BridgeLookup's Bridge Condition Exposure Score, based on FHWA National Bridge Inventory records.
Miami County, Indiana
Miami County has 171 bridges in the National Bridge Inventory, with 12 rated poor and 8 rated scour-critical. Its poor-condition share of 7.0% is above the 5.3% statewide average. Poor-condition bridges carry about 2,835 daily vehicle crossings.
Quote-Ready Local Facts
Copyable Facts for Reporters
BridgeLookup.com gives Miami County a Bridge Condition Exposure Score of 72/100 (C). The county has 171 bridges in the National Bridge Inventory, including 12 in poor condition and 8 rated scour-critical. Poor-condition bridges carry about 2,835 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 | 7.0% | 14.0 |
| Poor-condition traffic exposure | 25 | 0.8% of measured traffic | 0.6 |
| Scour-critical bridge share | 20 | 4.7% | 9.4 |
| Average age vs national baseline | 10 | 59 years vs 48 nationally | 4.5 |
| Traffic-data completeness | 5 | 345,322 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 | 7.0% |
| State Poor-Condition Share | 5.3% |
| National Poor-Condition Share | 6.7% |
| County Scour-Critical Share | 4.7% |
| Average Bridge Age | 59 years |
| Poor-Condition Traffic Exposure | 2,835 vehicles/day |
Bridges to Watch
Top Bridges to Watch in Miami County
| Bridge | Reason | Condition | Daily Traffic | Year Built |
|---|---|---|---|---|
| CR 950 North over Eel River | Poor condition + traffic exposure | Poor | 100 | 1903 |
| CR 100 East over Eel River | Poor condition | Poor | 0 | 1915 |
| CR 1050 East over Big Pipe Creek | Poor condition + traffic exposure | Poor | 900 | 1930 |
| CR 300 West over Rife Creek | Poor condition + traffic exposure | Poor | 625 | 1935 |
| Water Street over Little Pipe Creek | Poor condition + traffic exposure | Poor | 300 | 1930 |
| Park Drive over Schoolman Ditch | Poor condition + traffic exposure | Poor | 235 | 1935 |
| CR 100 West over Little Weesau Creek | Poor condition + traffic exposure | Poor | 150 | 1940 |
| CR 1400 North over Squirrel Creek | Poor condition + traffic exposure | Poor | 125 | 1945 |
| CR 600 East over Squirrel Creek | Poor condition + traffic exposure | Poor | 100 | 1920 |
| CR 450 East over Daniel Creek | Poor condition + traffic exposure | Poor | 100 | 1925 |
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.