Route 430 over Days River
Delta County, Michigan · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Route 430 over Days River in Delta 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 2022, making it 3 years old at the 2025 inventory.
- It carries about 253 vehicles a day (traffic count year 2022).
- Its listed owner is the county highway agency.
- It is one of 34 of the 86 inventoried bridges in Delta County rated good (39.5%); 0 (0.0%) 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 → (45.98541, -87.14058)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Culvert | 8 | Very good condition |
Bridge details
| Structure | Prestressed concrete culvert |
| Length | about 29 ft |
| Location | 1.5 Mi West of M 35 |
| NBI structure number | 000000000002124 |
| Condition class | Good |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Michigan department of transportation.
Busiest bridges in Delta County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Us-2|us-41|m-35 over Escanaba River | 2016 | 21,906 | Good |
| Us-2|us-41 over Portage Creek | 1928 | 14,094 | Fair |
| US-2 US-41 over Ford River | 1941 | 13,600 | Fair |
| Us-2|us-41 over Willow Creek | 1979 | 12,255 | Fair |
| US-2 over Tacoosh River | 1990 | 8,505 | Fair |
| US-2 over Rapid River | 1931 | 8,505 | Fair |
All bridges nearby: Delta County, MI bridge conditions · every bridge in Delta County · Michigan bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.