Every bridge in Montmorency County, Michigan
21 inventoried bridges, busiest first
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Montmorency County, Michigan, has 21 bridges in the 2025 National Bridge Inventory: 13 rated good, 8 fair, and 0 poor (as of ).
- This index lists every one of them, busiest first; each links to its own condition record.
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| M-32 Bs|s State St over Thunder Bay River | 2009 | 6,400 | Fair |
| M-32 over Miller Creek | 1991 | 4,572 | Fair |
| M-32 over Thunder Bay River | 1927 | 4,572 | Fair |
| Co Road 451 over N Br Thunder Bay River | 1994 | 2,126 | Fair |
| M-33 over Gilchrist Creek | 1951 | 1,647 | Fair |
| M-33 over Thunder Bay River | 1968 | 1,647 | Fair |
| Airport Road over Thunder Bay River | 1969 | 160 | Good |
| Carter Rd over Gilchrist Creek | 2021 | 150 | Good |
| Harwood Road over Gilchrist Creek | 2020 | 150 | Good |
| Hubert Road over N Br Thunder Bay River | 1994 | 150 | Fair |
| Hossler Road over Thunder Bay River | 1962 | 120 | Good |
| South Airport Road over Crooked Creek | 1999 | 110 | Good |
| Morrow Road over Thunder Bay River N Br | 2000 | 100 | Fair |
| Mcmurphy Road over Thunder Bay River | 2003 | 60 | Good |
| Blue Lakes Road over Black River | 1994 | 50 | Good |
| Blue Lakes Road over E Br Black River | 1994 | 50 | Good |
| Greasy Creek Rd over Gilchrist Creek | 2021 | 50 | Good |
| CR 628 over N Br Thunder Bay River | 2022 | 41 | Good |
| Hall Rd over Thunder Bay River | 2023 | 40 | Good |
| Co Rd 622 over E Br Black River | 2020 | 20 | Good |
| Schmallers Road over Hunt Creek | 2021 | 20 | Good |
Source: FHWA National Bridge Inventory, 2025.
Montmorency County bridge conditions · Michigan bridges by county.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.