Derenzy Road over Cedar River
Antrim County, Michigan · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Derenzy Road over Cedar River in Antrim County, Michigan, is rated in good condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 7 (good condition) on the 0-9 scale.
- It was built in 1988, making it 37 years old at the 2025 inventory.
- It carries about 3,150 vehicles a day (traffic count year 1997).
- Its listed owner is a city or municipal highway agency.
- It is one of 7 of the 15 inventoried bridges in Antrim County rated good (46.7%); 2 (13.3%) are rated poor.
- Its traffic status in the 2025 inventory is open, no restriction (NBI item 41).
- Its class is unchanged from 2024 (good), but component ratings moved: substructure 7 to 8.
- Its most recent inspection on record is dated May 2024, on a 24-month routine inspection cycle.
- 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 → (44.97835, -85.19313)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 7 | 7 | Good condition |
| Superstructure | 7 | 7 | Good condition |
| Substructure | 7 | 8 | Very good condition |
Bridge details
| Structure | Prestressed concrete multiple box beam |
| Length | about 54 ft |
| Location | 0.25MI E & 0.12MI N M-88 |
| NBI structure number | 000000000000373 |
| Condition class | Good |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | May 2024 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | 5: foundations stable, scour within the limits of the footing or piles |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Michigan department of transportation.
Busiest bridges in Antrim County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| US-31 over Elk River | 1953 | 11,959 | Fair |
| M-88|n Bridge St over Intermediate River | 1931 | 5,984 | Fair |
| Cayuga Street over Intermediate River | 1977 | 3,000 | Poor |
| Route 593 over Torch River | 1971 | 2,040 | Fair |
| Route 593 over Clam Lake | 1958 | 1,400 | Fair |
| State Street over Intermediate River | 1976 | 900 | Fair |
All bridges nearby: Antrim County, MI bridge conditions · every bridge in Antrim County · Michigan bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.