Winkler Mill over Stony Creek
Oakland County, Michigan · rated Poor in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Winkler Mill over Stony Creek in Oakland County, Michigan, is rated in poor condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the substructure, rated 3 (serious condition) on the 0-9 scale.
- It was built in 1967, making it 58 years old at the 2025 inventory.
- It carries about 346 vehicles a day (traffic count year 2016).
- Its listed owner is the county highway agency.
- It is one of 35 of the 513 inventoried bridges in Oakland County rated poor (6.8%); 35 (6.8%) are rated poor.
- Its traffic status in the 2025 inventory is posted for load (NBI item 41).
- Its class is unchanged from 2024 (poor), but component ratings moved: deck 5 to 4, superstructure 5 to 4.
- Status change: newly posted for load since 2024.
- Its most recent inspection on record is dated September 2024, on a 12-month routine inspection cycle.
- It is coded scour critical (NBI item 113 = 3): scour critical: foundations unstable for the assessed or calculated scour.
- A poor rating means at least one major component - deck, superstructure, or substructure - is rated 4 or lower on FHWA's 0-9 scale. It does not by itself mean the bridge is unsafe; bridges judged unsafe are closed or load-restricted by their owners.
View this bridge on a map → (42.70723, -83.10296)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 5 | 4 | Poor condition |
| Superstructure | 5 | 4 | Poor condition |
| Substructure | 3 | 3 | Serious condition |
Bridge details
| Structure | Timber slab |
| Length | about 21 ft |
| Location | North of Washington Rd |
| NBI structure number | 000000000008193 |
| Condition class | Poor |
| Traffic status (item 41) | Posted for load |
| Last inspection (item 90) | September 2024 |
| Inspection interval (item 91) | 12 months |
| Scour (item 113) | 3: scour critical: foundations unstable for the assessed or calculated scour |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Michigan department of transportation.
Busiest bridges in Oakland County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I-696 over I-75 & 4 Ramps | 1971 | 209,200 | Poor |
| I-696 over N Service Rd | 1971 | 209,200 | Fair |
| I-696 over N-s Service Road | 1982 | 192,100 | Fair |
| I-96 EB over 9 Mile Rd | 1971 | 182,700 | Fair |
| I-96 WB over 9 Mi Rd | 1972 | 182,700 | Fair |
| I-696 over Drake Rd | 1960 | 180,375 | Good |
All bridges nearby: Oakland County, MI bridge conditions · every bridge in Oakland County · Michigan bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.