Bridge conditions in Winneshiek County, Iowa
342 inventoried bridges · 57 rated poor · 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
Winneshiek County has 57 bridges rated poor out of 342 inventoried, a 16.7% share that puts it well above the national rate of about 7%.
- 57 of the 342 bridges in Winneshiek County, Iowa, are rated in poor condition (16.7%) in the 2025 National Bridge Inventory, as of .
- 130 bridges (38.0%) are rated good and 155 (45.3%) fair.
- The median Winneshiek County bridge was built in 1975.
- The busiest poor-rated bridge is FM over Trout River (built 1956), carrying about 953 vehicles a day.
Good 38.0% · Fair 45.3% · Poor 16.7% of 342 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 |
|---|---|---|---|
| FM over Trout River | 1956 | 953 | Poor |
| FM over Trout River | 1958 | 697 | Poor |
| FM over Small Creek | 1986 | 697 | Poor |
| Main St over Small Natural Stream | 1940 | 649 | Poor |
| FM over Upper Iowa River | 1937 | 324 | Poor |
| Local over Upper Iowa River | 1985 | 207 | Poor |
| 236TH Ave over Silver Creek | 1928 | 187 | Poor |
| FM over North Bear Creek | 1952 | 137 | Poor |
| Meadowlark Rd over Creek | 1976 | 128 | Poor |
| Local over Ten Mile Creek | 1900 | 118 | Poor |
| Local over Pine Creek | 1938 | 118 | Poor |
| 244TH Ave over Upper Iowa River | 1924 | 108 | Poor |
| Local Road over Creek | 1900 | 108 | Poor |
| Local over Creek | 1900 | 97 | Poor |
| Local over Creek | 1900 | 88 | Poor |
| Local Road over Bohemian Creek | 1922 | 88 | Poor |
| Local Road over Bohemian Creek | 1962 | 88 | Poor |
| FM over Minor Creek | 1970 | 88 | Poor |
| 107TH Ave over Creek | 1965 | 78 | Poor |
| Local Road over Creek | 1962 | 78 | Poor |
| Local over Upper Iowa River | 1900 | 70 | Poor |
| Ferris Mill Rd over Creek | 1900 | 70 | Poor |
| Local over Creek | 1900 | 70 | Poor |
| 150TH St over Stream | 1892 | 69 | Poor |
| Local Road over Creek | 1977 | 59 | Poor |
| Coldwater Creek Rd over Creek | 1978 | 59 | Poor |
| Local Road over Canoe Creek | 1908 | 49 | Poor |
| Local over Upper Iowa River | 1900 | 49 | Poor |
| FM over North Bear Creek | 1900 | 49 | Poor |
| Local over Creek | 1944 | 44 | Poor |
| Local over Creek | 1977 | 44 | Poor |
| Local Road over Creek | 1900 | 39 | Poor |
| Local Road over Creek | 1900 | 39 | Poor |
| FM over North Bear Creek | 1957 | 39 | Poor |
| Local Road over Creek | 1900 | 39 | Poor |
| FM over Upper Iowa River | 1913 | 39 | Poor |
| Local Road over Trout Creek | 1915 | 33 | Poor |
| Local Road over Turkey River | 1959 | 33 | Poor |
| Local Road over Creek | 1915 | 29 | Poor |
| Local over Small Running Creek | 1900 | 29 | Poor |
| Local Road over Creek | 1900 | 29 | Poor |
| Local Road over Creek | 1900 | 29 | Poor |
| Chimney Rock Rd over Creek | 1900 | 26 | Poor |
| Local Rd over Small | 1978 | 26 | Poor |
| Local Road over Creek | 1900 | 26 | Poor |
| Local Road over Creek | 1900 | 26 | Poor |
| Local over Canoe Creek | 1924 | 20 | Poor |
| Cattle Creek Rd over Creek | 1900 | 20 | Poor |
| Local over Creek | 1980 | 20 | Poor |
| Local Road over Upper Iowa River | 1904 | 20 | Poor |
| Local Road over Creek | 1972 | 15 | Poor |
| 279TH Ave over Drainage | 1900 | 15 | Poor |
| Local Road over Creek | 1971 | 11 | Poor |
| Local Road over Creek | 1900 | 11 | Poor |
| Local Legno over Creek | 1913 | 11 | Poor |
| Local over Small | 1978 | 11 | Poor |
| Local Road over Creek | 1900 | 5 | Poor |
Busiest bridges in the county
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Ia 9 over Trout Creek | 1969 | 14,900 | Fair |
| Ia 9 over Division St | 1969 | 8,900 | Fair |
| College Dr over Upper Iowa River | 1987 | 8,868 | Fair |
| Ia 9 over Trout Creek | 1969 | 5,400 | Fair |
| US 52 over Dry Run | 1963 | 4,230 | Fair |
| US 52 over Stream & Twin Springs Rd | 1963 | 4,230 | Fair |
| Ia 9 over Dry Run Creek | 1945 | 3,880 | Fair |
| US 52 over Upper Iowa River | 1963 | 3,340 | Fair |
| Ia 24 over Turkey River Overflow | 2006 | 2,970 | Good |
| Ia 24 over Stream | 2008 | 2,970 | Good |
Source: FHWA National Bridge Inventory, 2025. Counts cover inventoried highway bridges over 20 feet; ratings are reported by the state DOT.
All of Iowa: Iowa 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.