Lapeer County Bridge Report Card
Lapeer County scores 63 out of 100 on BridgeLookup's Bridge Condition Exposure Score, based on FHWA National Bridge Inventory records.
Lapeer County, Michigan
Lapeer County has 163 bridges in the National Bridge Inventory, with 13 rated poor and 13 rated scour-critical. Its poor-condition share of 8.0% is at or below the 11.0% statewide average. Poor-condition bridges carry about 48,776 daily vehicle crossings.
Quote-Ready Local Facts
Copyable Facts for Reporters
BridgeLookup.com gives Lapeer County a Bridge Condition Exposure Score of 63/100 (D). The county has 163 bridges in the National Bridge Inventory, including 13 in poor condition and 13 rated scour-critical. Poor-condition bridges carry about 48,776 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 | 8.0% | 16.0 |
| Poor-condition traffic exposure | 25 | 7.1% of measured traffic | 5.4 |
| Scour-critical bridge share | 20 | 8.0% | 16.0 |
| Average age vs national baseline | 10 | 42 years vs 48 nationally | 0.0 |
| Traffic-data completeness | 5 | 682,987 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 | 8.0% |
| State Poor-Condition Share | 11.0% |
| National Poor-Condition Share | 6.7% |
| County Scour-Critical Share | 8.0% |
| Average Bridge Age | 42 years |
| Poor-Condition Traffic Exposure | 48,776 vehicles/day |
Bridges to Watch
Top Bridges to Watch in Lapeer County
| Bridge | Reason | Condition | Daily Traffic | Year Built |
|---|---|---|---|---|
| M-24 over S Br Flint River | Poor condition + traffic exposure | Poor | 18,440 | 1948 |
| M-24 over Fostoria Drain | Poor condition + traffic exposure | Poor | 4,293 | 1974 |
| M-90 over N Branch Flint River | Poor condition + traffic exposure | Poor | 3,217 | 1965 |
| Bohms Road over Madison Drain | Poor condition + traffic exposure | Poor | 158 | 1930 |
| Mckillop Road over Indian Creek Drain | Poor condition + traffic exposure | Poor | 55 | 1976 |
| Genesee Street over Farmers CR | Poor condition + traffic exposure | Poor | 16,489 | 1933 |
| Morris Road over South Br. Flint River | Poor condition + traffic exposure | Poor | 4,300 | 1967 |
| Peck Road over Weaver Drain | Poor condition + traffic exposure | Poor | 1,115 | 1970 |
| Gosline Road over South Br. Cass River Dn. | Poor condition + traffic exposure | Poor | 214 | 1965 |
| Castle Road over North Br. Flint River | Poor condition + traffic exposure | Poor | 210 | 1940 |
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.