Miami-Dade County Bridge Report Card
Miami-Dade County scores 84 out of 100 on BridgeLookup's Bridge Condition Exposure Score, based on FHWA National Bridge Inventory records.
Miami-Dade County, Florida
Miami-Dade County has 1,054 bridges in the National Bridge Inventory, with 55 rated poor and 22 rated scour-critical. Its poor-condition share of 5.2% is above the 2.8% statewide average. Poor-condition bridges carry about 813,680 daily vehicle crossings.
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Copyable Facts for Reporters
BridgeLookup.com gives Miami-Dade County a Bridge Condition Exposure Score of 84/100 (B). The county has 1,054 bridges in the National Bridge Inventory, including 55 in poor condition and 22 rated scour-critical. Poor-condition bridges carry about 813,680 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 | 5.2% | 10.4 |
| Poor-condition traffic exposure | 25 | 2.0% of measured traffic | 1.5 |
| Scour-critical bridge share | 20 | 2.1% | 4.2 |
| Average age vs national baseline | 10 | 46 years vs 48 nationally | 0.0 |
| Traffic-data completeness | 5 | 40,328,080 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 | 5.2% |
| State Poor-Condition Share | 2.8% |
| National Poor-Condition Share | 6.7% |
| County Scour-Critical Share | 2.1% |
| Average Bridge Age | 46 years |
| Poor-Condition Traffic Exposure | 813,680 vehicles/day |
Bridges to Watch
Top Bridges to Watch in Miami-Dade County
| Bridge | Reason | Condition | Daily Traffic | Year Built |
|---|---|---|---|---|
| Comp Sr-112 over Indian Creek Canal | Poor condition + traffic exposure | Poor | 41,000 | 1953 |
| NE 96th Street over Bay Harbor Waterway | Poor condition + traffic exposure | Poor | 23,500 | 1958 |
| Kane Concourse over Indian Creek | Poor condition + traffic exposure | Poor | 23,500 | 1963 |
| SW 152nd Street over Canal 100-a | Poor condition + traffic exposure | Poor | 18,758 | 1966 |
| I-195 (sr-112) over Sr-5 & Fec R/r | Poor condition + traffic exposure | Poor | 151,500 | 1961 |
| WB NW 25th St. over North Line Canal | Poor condition + traffic exposure | Poor | 48,400 | 2016 |
| SW 117th Ave. over Town And Country Lake | Poor condition + traffic exposure | Poor | 39,107 | 1985 |
| SW 42nd Avenue over Coral Gables Canal | Poor condition + traffic exposure | Poor | 34,503 | 1943 |
| Rickenbacker Cswy. over Biscayne Bay/bear Cut | Poor condition + traffic exposure | Poor | 30,804 | 1944 |
| NW 67th Avenue over Biscayne Canal (c-8) | Poor condition + traffic exposure | Poor | 28,291 | 1960 |
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.