Spile Dam Rd over Ocqueoc River
Presque Isle County, Michigan · rated Poor in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Spile Dam Rd over Ocqueoc River in Presque Isle County, Michigan, is rated in poor condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the superstructure, rated 3 (serious condition) on the 0-9 scale.
- It was built in 1930, making it 95 years old at the 2025 inventory.
- It carries about 100 vehicles a day (traffic count year 2013).
- Its listed owner is the county highway agency.
- It is one of 4 of the 37 inventoried bridges in Presque Isle County rated poor (10.8%); 4 (10.8%) 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: superstructure 4 to 3.
- Its most recent inspection on record is dated September 2024, on a 12-month routine inspection cycle.
- 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 → (45.31636, -84.006)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 4 | 4 | Poor condition |
| Superstructure | 4 | 3 | Serious condition |
| Substructure | 5 | 5 | Fair condition |
Bridge details
| Structure | Steel stringer or multi-beam girder |
| Length | about 30 ft |
| Location | N of CR 634 |
| NBI structure number | 000000000013867 |
| 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) | U: unknown foundation, not evaluated for scour |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Michigan department of transportation.
Busiest bridges in Presque Isle County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| M-68 over Rainy River | 1954 | 3,382 | Fair |
| M-68 over Ocqueoc River | 1954 | 3,382 | Fair |
| US-23 over Swan River | 1939 | 3,242 | Good |
| US-23|BRADLEY Hwy over Trout River | 1939 | 1,939 | Fair |
| Millerburg Road over Ocqueoc River | 1948 | 1,750 | Fair |
| M-68 over Little Ocqueoc River | 1959 | 1,564 | Good |
All bridges nearby: Presque Isle County, MI bridge conditions · every bridge in Presque Isle County · Michigan bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.