Bridge conditions in Gladwin County, Michigan
63 inventoried bridges · 4 rated poor · 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
4 of the 63 bridges the federal inventory lists in Gladwin County are rated poor; the rest split 24 good and 35 fair.
- 4 of the 63 bridges in Gladwin County, Michigan, are rated in poor condition (6.3%) in the 2025 National Bridge Inventory, as of .
- 24 bridges (38.1%) are rated good and 35 (55.6%) fair.
- The median Gladwin County bridge was built in 1985.
- The busiest poor-rated bridge is M-18 over Tobacco River (built 1939), carrying about 6,100 vehicles a day.
Good 38.1% · Fair 55.6% · Poor 6.3% of 63 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-18 over Tobacco River | 1939 | 6,100 | Poor |
| Dale Road over Tobacco River | 1970 | 585 | Poor |
| Highwood Road over Tittabawasee River | 1984 | 495 | Poor |
| Bard Rd over S Br of Tobacco Riv | 1970 | 220 | Poor |
Busiest bridges in the county
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| M-18|m-61|w Cedar over Cedar Creek | 2001 | 13,231 | Fair |
| M-18 over Tobacco River | 1939 | 6,100 | Poor |
| M-18 over S Br Little Sugar River | 1923 | 5,963 | Good |
| M-18 over Farm Drain | 1937 | 5,052 | Fair |
| M-30 over Tobacco River | 2021 | 4,100 | Good |
| M-30 over Larabee Creek | 1977 | 3,517 | Good |
| M-61 over Tittabawassee River | 1958 | 3,302 | Fair |
| M-61 over Molasses River | 1998 | 3,302 | Fair |
| M-30 over Little Tobacco River | 1958 | 2,536 | Fair |
| M-30 over Sugar River | 1954 | 2,536 | 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.