Bridge conditions in Lapeer County, Michigan
163 inventoried bridges · 13 rated poor · 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
The federal inventory lists 163 bridges in Lapeer County: 61 rated good, 89 fair, and 13 poor.
- 13 of the 163 bridges in Lapeer County, Michigan, are rated in poor condition (8.0%) in the 2025 National Bridge Inventory, as of .
- 61 bridges (37.4%) are rated good and 89 (54.6%) fair.
- The median Lapeer County bridge was built in 1983.
- The busiest poor-rated bridge is M-24 over S Br Flint River (built 1948), carrying about 18,440 vehicles a day.
Good 37.4% · Fair 54.6% · Poor 8.0% of 163 bridges
Bridges rated poor
Every bridge in the county with a poor rating, busiest first. Poor means a major component is rated 4 or lower on FHWA's 0-9 scale; it is a repair flag, not a closure notice.
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| M-24 over S Br Flint River | 1948 | 18,440 | Poor |
| Genesee Street over Farmers CR | 1933 | 16,489 | Poor |
| Morris Road over South Br. Flint River | 1967 | 4,300 | Poor |
| M-24 over Fostoria Drain | 1974 | 4,293 | Poor |
| M-90 over N Branch Flint River | 1965 | 3,217 | Poor |
| Peck Road over Weaver Drain | 1970 | 1,115 | Poor |
| Gosline Road over South Br. Cass River Dn. | 1965 | 214 | Poor |
| Castle Road over North Br. Flint River | 1940 | 210 | Poor |
| Bohms Road over Madison Drain | 1930 | 158 | Poor |
| Index Road over South Br. Cass River Dn. | 1965 | 110 | Poor |
| Webster Road over Weston Drain | 1980 | 105 | Poor |
| Squaw Creek Road over Squaw Creek Drain | 1968 | 70 | Poor |
| Mckillop Road over Indian Creek Drain | 1976 | 55 | Poor |
Busiest bridges in the county
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| M-24|n Main St over Farmers Creek | 2015 | 28,600 | Good |
| M-53|van Dyke Rd over North Branch Clinton Riv | 1999 | 20,247 | Fair |
| M-53|van Dyke Rd over Belle River | 1963 | 19,650 | Fair |
| I-69 EB over Newark Rd | 1983 | 18,845 | Fair |
| I-69 EB over Winslow Rd | 1983 | 18,845 | Fair |
| I-69 WB over Winslow Rd | 1983 | 18,845 | Fair |
| I-69 WB over Newark Rd | 1983 | 18,845 | Fair |
| M-24 over S Br Flint River | 1948 | 18,440 | Poor |
| M-24 over Plum Creek | 2012 | 18,300 | Good |
| I-69 EB over Summers Rd | 1983 | 17,578 | Fair |
Source: FHWA National Bridge Inventory, 2025. Counts cover inventoried highway bridges over 20 feet; ratings are reported by the state DOT.
All of Michigan: Michigan bridge conditions by county · every download on the data page.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.