Whites Bridge Rd over Flat River
Ionia County, Michigan · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Whites Bridge Rd over Flat River in Ionia County, Michigan, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the substructure, rated 6 (satisfactory condition) on the 0-9 scale.
- It was built in 1867 and reconstructed in 2020, making it 158 years old at the 2025 inventory.
- It carries about 144 vehicles a day (traffic count year 2016).
- Its listed owner is the county highway agency.
- It is one of 69 of the 118 inventoried bridges in Ionia County rated fair (58.5%); 12 (10.2%) are rated poor.
- A fair rating means the lowest-rated major component scores 5 or 6 on FHWA's 0-9 scale: some deterioration or minor section loss, but the structure is sound. It is the middle class, not a warning.
View this bridge on a map → (43.01471, -85.29775)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Deck | 7 | Good condition |
| Superstructure | 7 | Good condition |
| Substructure | 6 | Satisfactory condition |
Bridge details
| Structure | Timber through truss |
| Length | about 118 ft |
| Location | 7 Mi NW of Saranac |
| NBI structure number | 000000000004039 |
| Condition class | Fair |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Michigan department of transportation.
Busiest bridges in Ionia County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I-96 over Portland Trail | 2013 | 35,000 | Good |
| I-96 over Libhart Creek | 1958 | 33,978 | Fair |
| I-96 EB over Kent Rd | 1959 | 20,074 | Fair |
| I-96 WB over Kent Rd | 1959 | 20,074 | Fair |
| I-96 EB over Okemos Rd | 1959 | 20,074 | Fair |
| I-96 WB over Okemos Rd | 1959 | 20,074 | Fair |
All bridges nearby: Ionia County, MI bridge conditions · every bridge in Ionia County · Michigan bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.