Bridge conditions in Kent County, Michigan
524 inventoried bridges · 29 rated poor · 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
29 of the 524 bridges the federal inventory lists in Kent County are rated poor; the rest split 178 good and 317 fair.
- 29 of the 524 bridges in Kent County, Michigan, are rated in poor condition (5.5%) in the 2025 National Bridge Inventory, as of .
- 178 bridges (34.0%) are rated good and 317 (60.5%) fair.
- The median Kent County bridge was built in 1971.
- The busiest poor-rated bridge is I-196 M-21 WB over Conrail (no Tracks)(abn) (built 1963), carrying about 57,075 vehicles a day.
Good 34.0% · Fair 60.5% · Poor 5.5% of 524 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.
Busiest bridges in the county
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| US-131 over CSX RR | 1962 | 103,312 | Fair |
| I-196 & Ramp G over Gtw RR (abn) | 1964 | 69,092 | Good |
| US-131 SB over Grand River & Fulton St | 1999 | 67,975 | Fair |
| US-131 over Buck Creek | 2000 | 61,220 | Good |
| US-131 over Conrail | 2000 | 61,220 | Fair |
| US-131 NB over Rogue River | 1969 | 58,420 | Fair |
| US-131 NB over Conrail&plaster CR (abn) | 1958 | 57,991 | Fair |
| US-131 SB over Conrail&plaster CR (abn) | 1958 | 57,991 | Fair |
| I-196 M-21 WB over Conrail (no Tracks)(abn) | 1963 | 57,075 | Poor |
| US-131 NB over Market Ave | 2000 | 56,779 | 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.