Bridge conditions in Gratiot County, Michigan
167 inventoried bridges · 22 rated poor · 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
Of the 167 Gratiot County bridges in the federal inventory, 22 carry a poor rating. That 13.2% share is roughly 2x the national average.
- 22 of the 167 bridges in Gratiot County, Michigan, are rated in poor condition (13.2%) in the 2025 National Bridge Inventory, as of .
- 64 bridges (38.3%) are rated good and 81 (48.5%) fair.
- The median Gratiot County bridge was built in 1979.
- The busiest poor-rated bridge is M-46 & US-127BR over US-127 (built 1961), carrying about 11,219 vehicles a day.
Good 38.3% · Fair 48.5% · Poor 13.2% of 167 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 |
|---|---|---|---|
| M-46 & US-127BR over US-127 | 1961 | 11,219 | Poor |
| US-127 SB over US-127 Br (polk Rd) | 1961 | 9,181 | Poor |
| US-127 NB over US-127 Br | 1961 | 9,181 | Poor |
| US-127 SB over US-127 Br | 1961 | 9,181 | Poor |
| US-127 NB over Mid Mich RR | 1960 | 8,293 | Poor |
| M-46 over Seville Sumner Drain | 1936 | 5,634 | Poor |
| US-127 Br over US-127 | 1961 | 4,000 | Poor |
| Luce Road over Pine River | 1957 | 3,850 | Poor |
| Begole Rd over US-127 | 1961 | 3,712 | Poor |
| Lumber Jack Road over Pine River | 1947 | 1,190 | Poor |
| Riverview Drive over Drain #96 | 1968 | 790 | Poor |
| Ferris Road over Pine River | 1987 | 730 | Poor |
| S County Line Road over Maple River | 1973 | 139 | Poor |
| Mcclelland Road over Beaver Creek Drain | 1941 | 118 | Poor |
| Blair Road over Bad River Drain | 1978 | 114 | Poor |
| Jackson Road over Bush Creek Drain | 1936 | 92 | Poor |
| Adams Road over Bush Creek Drain | 1930 | 88 | Poor |
| Polk Road over Shad Creek Drain | 1936 | 83 | Poor |
| Pingree Road over North Shade Drain | 1968 | 80 | Poor |
| Ferris Road over Bass Lake Drain | 1910 | 72 | Poor |
| Roosevelt Road over Drain #142 | 1920 | 70 | Poor |
| Taft Road over Bovee Drain | 1900 | 56 | Poor |
Busiest bridges in the county
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| US-127 NB over US-127 Br | 1961 | 15,400 | Fair |
| US-127 SB over US-127 Br | 1961 | 15,400 | Fair |
| M-46 & US-127BR over US-127 | 1961 | 11,219 | Poor |
| US-127 NB over Maple River | 1988 | 10,831 | Fair |
| US-127 SB over Maple River | 1955 | 10,831 | Good |
| US-127 Br over Pine River | 1928 | 10,432 | Fair |
| US-127 NB over N Br Bad River | 1987 | 10,338 | Fair |
| US-127 SB over N Br Bad River | 1957 | 10,338 | Fair |
| M-46|w Monroe Rd over Sugar Creek | 2002 | 9,986 | Good |
| M-46 over Pine River | 1930 | 9,548 | Fair |
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.