Macomb County Bridge Report Card
Macomb County scores 73 out of 100 on BridgeLookup's Bridge Condition Exposure Score, based on FHWA National Bridge Inventory records.
Macomb County, Michigan
Macomb County has 417 bridges in the National Bridge Inventory, with 30 rated poor and 22 rated scour-critical. Its poor-condition share of 7.2% is at or below the 11.0% statewide average. Poor-condition bridges carry about 188,583 daily vehicle crossings.
Quote-Ready Local Facts
Copyable Facts for Reporters
BridgeLookup.com gives Macomb County a Bridge Condition Exposure Score of 73/100 (C). The county has 417 bridges in the National Bridge Inventory, including 30 in poor condition and 22 rated scour-critical. Poor-condition bridges carry about 188,583 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 | 7.2% | 14.4 |
| Poor-condition traffic exposure | 25 | 2.8% of measured traffic | 2.1 |
| Scour-critical bridge share | 20 | 5.3% | 10.6 |
| Average age vs national baseline | 10 | 45 years vs 48 nationally | 0.0 |
| Traffic-data completeness | 5 | 6,682,394 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 | 7.2% |
| State Poor-Condition Share | 11.0% |
| National Poor-Condition Share | 6.7% |
| County Scour-Critical Share | 5.3% |
| Average Bridge Age | 45 years |
| Poor-Condition Traffic Exposure | 188,583 vehicles/day |
Bridges to Watch
Top Bridges to Watch in Macomb County
| Bridge | Reason | Condition | Daily Traffic | Year Built |
|---|---|---|---|---|
| Maple Lane RD over Red Run Drain | Poor condition + traffic exposure | Poor | 14,852 | 1985 |
| Crocker BLVD over Clinton River | Poor condition + traffic exposure | Poor | 11,736 | 1960 |
| Dodge Park RD over Plum Brook Drain | Poor condition + traffic exposure | Poor | 11,214 | 1972 |
| South River RD over Channel Betw Lake & Rivr | Poor condition + traffic exposure | Poor | 6,400 | 1974 |
| Armada Ridge RD over Highbank Creek | Poor condition + traffic exposure | Poor | 1,690 | 1950 |
| Mcvicar Road over East Pond Creek | Poor condition + traffic exposure | Poor | 1,380 | 1955 |
| M-3 & M-29 over I-94 | Poor condition + traffic exposure | Poor | 37,832 | 1963 |
| 21 Mile Road over Salt Slang Gloede Drain | Poor condition + traffic exposure | Poor | 22,400 | 1968 |
| Garfield RD over Harrington Drain | Poor condition + traffic exposure | Poor | 13,700 | 1970 |
| 24 Mile Road over Newland Drain | Poor condition + traffic exposure | Poor | 12,500 | 1965 |
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.