Bridge conditions in Missaukee County, Michigan
39 inventoried bridges · 4 rated poor · 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
Of the 39 Missaukee County bridges in the federal inventory, 4 carry a poor rating. That 10.3% share is roughly 2x the national average.
- 4 of the 39 bridges in Missaukee County, Michigan, are rated in poor condition (10.3%) in the 2025 National Bridge Inventory, as of .
- 20 bridges (51.3%) are rated good and 15 (38.5%) fair.
- The median Missaukee County bridge was built in 1984.
- The busiest poor-rated bridge is Forward Road over Clam River (built 1958), carrying about 1,316 vehicles a day.
Good 51.3% · Fair 38.5% · Poor 10.3% of 39 bridges
Bridges rated poor
Every bridge in the county with a poor rating, busiest first. Poor means a major component is rated 4 or lower on FHWA's 0-9 scale; it is a repair flag, not a closure notice.
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Forward Road over Clam River | 1958 | 1,316 | Poor |
| Stoney Corner Road over Clam River | 1960 | 600 | Poor |
| 13 Mile Road over Butterfield Creek | 1988 | 451 | Poor |
| Lotan Road over Mosquito Creek | 1965 | 280 | Poor |
Busiest bridges in the county
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| M-55|w Watergate R over Clam River | 1973 | 5,113 | Fair |
| M-55|e Houghton La over W Br Muskegon River | 1931 | 4,338 | Fair |
| M-55|e Houghton La over Muskegon River | 1935 | 4,338 | Fair |
| M-66|w Stoney Corn over N Br Clam River | 1933 | 4,081 | Fair |
| M-66 over Clam River | 1929 | 2,696 | Fair |
| M-66|s Burkett Rd over Middle Br Clam River | 1929 | 2,466 | Fair |
| Forward Road over Clam River | 1958 | 1,316 | Poor |
| La Chance Road over Clam River | 1997 | 950 | Fair |
| Falmouth Road over Marks Creek | 1945 | 915 | Fair |
| 7 Mile Road over Clam River | 2006 | 910 | 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.