Bridge conditions in Winona County, Minnesota
237 inventoried bridges · 9 rated poor · 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
9 of the 237 bridges the federal inventory lists in Winona County are rated poor; the rest split 100 good and 128 fair.
- 9 of the 237 bridges in Winona County, Minnesota, are rated in poor condition (3.8%) in the 2025 National Bridge Inventory, as of .
- 100 bridges (42.2%) are rated good and 128 (54.0%) fair.
- The median Winona County bridge was built in 1981.
- The busiest poor-rated bridge is M 109 over East Burns Creek (built 1939), carrying about 2,250 vehicles a day.
Good 42.2% · Fair 54.0% · Poor 3.8% of 237 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 109 over East Burns Creek | 1939 | 2,250 | Poor |
| Mn 74 over S Fk Whitewater River | 1941 | 1,785 | Poor |
| Csah 26 over Whitewater River | 1965 | 1,100 | Poor |
| Mn 74 over Mid Fk Whitewater River | 1964 | 807 | Poor |
| Csah 25 over Rush Creek | 1979 | 100 | Poor |
| M 332 over Gilmore Creek | 1974 | 100 | Poor |
| T 131 over Stream | 1918 | 45 | Poor |
| T 309 over Trout Run Creek | 1918 | 20 | Poor |
| T 663 over E Burns Valley Creek | 1968 | 1 | Poor |
Busiest bridges in the county
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I 90 over 3 St S | 2010 | 21,406 | Good |
| I 90 over 3 St S | 2009 | 21,200 | Good |
| US 61 over Gilmore Creek | 1957 | 19,900 | Fair |
| I 90 over Aoi; Mississippi River | 2016 | 13,950 | Fair |
| I 90 over Aoi; Mississippi River | 2015 | 13,950 | Good |
| I 90 over Ramps; Aoi Access; Cp RR | 2015 | 13,950 | Fair |
| I 90 over Th 61; Ramps; Cp RR | 2016 | 13,950 | Fair |
| US 14 over Gilmore Creek | 1971 | 12,027 | Fair |
| US 61 over Homer Creek | 1956 | 11,500 | Fair |
| Csah 17 over Burns Valley Creek | 1985 | 11,000 | Fair |
Source: FHWA National Bridge Inventory, 2025. Counts cover inventoried highway bridges over 20 feet; ratings are reported by the state DOT.
All of Minnesota: Minnesota 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.