Bridge conditions in Montmorency County, Michigan
21 inventoried bridges · 0 rated poor · 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
Montmorency County is one of the counties with a clean sheet: 21 bridges on the federal inventory and not one rated poor. 8 carry a fair rating, which means wear worth watching but no structural deficiency.
- 0 of the 21 bridges in Montmorency County, Michigan, are rated in poor condition (0.0%) in the 2025 National Bridge Inventory, as of .
- 13 bridges (61.9%) are rated good and 8 (38.1%) fair.
- The median Montmorency County bridge was built in 1999.
Good 61.9% · Fair 38.1% · Poor 0.0% of 21 bridges
Bridges rated poor
No bridges in this county carry a poor rating in the current inventory.
Busiest bridges in the county
| 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 |
| Hubert Road over N Br Thunder Bay River | 1994 | 150 | Fair |
| Harwood Road over Gilchrist Creek | 2020 | 150 | Good |
| Carter Rd over Gilchrist Creek | 2021 | 150 | Good |
Source: FHWA National Bridge Inventory, 2025. Counts cover inventoried highway bridges over 20 feet; ratings are reported by the state DOT.
All of Michigan: Michigan bridge conditions by county · every download on the data page.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.