Bridge conditions in Cass County, Michigan
53 inventoried bridges · 8 rated poor · 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
Of the 53 Cass County bridges in the federal inventory, 8 carry a poor rating. That 15.1% share is roughly 2x the national average.
- 8 of the 53 bridges in Cass County, Michigan, are rated in poor condition (15.1%) in the 2025 National Bridge Inventory, as of .
- 13 bridges (24.5%) are rated good and 32 (60.4%) fair.
- The median Cass County bridge was built in 1970.
- The busiest poor-rated bridge is Pokagon Rd over Pokagon Creek (built 1960), carrying about 2,590 vehicles a day.
Good 24.5% · Fair 60.4% · Poor 15.1% of 53 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 |
|---|---|---|---|
| Pokagon Rd over Pokagon Creek | 1960 | 2,590 | Poor |
| Middle Crossing Rd over Dowagiac River | 1961 | 1,688 | Poor |
| Indian Lake Road over Dowagiac River | 1959 | 991 | Poor |
| Cassopolis Rd over Christiana Creek | 1960 | 159 | Poor |
| North Shore Drive over Christiana Creek | 1930 | 146 | Poor |
| Frost Street over Dowagiac River | 1930 | 56 | Poor |
| Thomson Rd over Abandoned RR Row | 1919 | 30 | Poor |
| Yaw Street over Dowagiac River | 1930 | 26 | Poor |
Busiest bridges in the county
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| US-12 over M-60 | 1960 | 9,010 | Fair |
| M-51 over Dowagiac Creek | 1949 | 8,127 | Fair |
| US-12 over Christiana Creek | 1941 | 8,072 | Fair |
| US-12 over Brandywine Creek | 1982 | 7,438 | Fair |
| M-62 over Dowagiac Creek | 1950 | 7,355 | Fair |
| US-12 over Valley Creek | 2011 | 7,350 | Good |
| M-51 over Dowagiac River | 1952 | 6,146 | Fair |
| M-51 over Peavine Creek | 2009 | 6,037 | Good |
| M-62 over Dowagiac River | 1953 | 5,743 | Fair |
| M-62 over Dowagiac Creek | 1952 | 5,743 | 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.