Mackinaw Trail over White Pine Trail
Osceola County, Michigan · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Mackinaw Trail over White Pine Trail in Osceola County, Michigan, is rated in good condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the culvert, rated 8 (very good condition) on the 0-9 scale.
- It was built in 2003, making it 22 years old at the 2025 inventory.
- It carries about 677 vehicles a day (traffic count year 2000).
- Its listed owner is the county highway agency.
- It is one of 36 of the 103 inventoried bridges in Osceola County rated good (35.0%); 7 (6.8%) are rated poor.
- A good rating means every major component - deck, superstructure, substructure, or culvert - is rated 7 or higher on FHWA's 0-9 scale: no more than minor problems.
View this bridge on a map → (44.03114, -85.46658)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Culvert | 8 | Very good condition |
Bridge details
| Structure | Steel culvert |
| Length | about 24 ft |
| Location | Section 14/23 T19N R10W |
| NBI structure number | 000000000008609 |
| Condition class | Good |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Michigan department of transportation.
Busiest bridges in Osceola County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| US-131 NB over E Br Hersey River | 1957 | 12,782 | Fair |
| US-131 NB over Hersey Creek | 1985 | 11,841 | Fair |
| US-131 SB over Hersey Creek | 1985 | 11,841 | Fair |
| US-10 over Twin Creek | 1997 | 11,184 | Good |
| US-10 over Hersey River | 1958 | 6,569 | Fair |
| US-131 NB over Johnson Creek | 1984 | 6,391 | Fair |
All bridges nearby: Osceola County, MI bridge conditions · every bridge in Osceola County · Michigan bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.