Bridge conditions in Blue Earth County, Minnesota
193 inventoried bridges · 12 rated poor · 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
12 of the 193 bridges the federal inventory lists in Blue Earth County are rated poor; the rest split 88 good and 93 fair.
- 12 of the 193 bridges in Blue Earth County, Minnesota, are rated in poor condition (6.2%) in the 2025 National Bridge Inventory, as of .
- 88 bridges (45.6%) are rated good and 93 (48.2%) fair.
- The median Blue Earth County bridge was built in 1979.
- The busiest poor-rated bridge is Unu 169 over Minn R UP RR; Street (built 1985), carrying about 22,949 vehicles a day.
Good 45.6% · Fair 48.2% · Poor 6.2% of 193 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 |
|---|---|---|---|
| Unu 169 over Minn R UP RR; Street | 1985 | 22,949 | Poor |
| US 14 over N Riverfront Dr | 1977 | 16,250 | Poor |
| US 14 over N Riverfront Dr | 1977 | 15,742 | Poor |
| Csah 9 over Blue Earth River | 1985 | 572 | Poor |
| Csah 29 over Maple River | 1956 | 465 | Poor |
| Csah 25 over Perch Creek | 1940 | 305 | Poor |
| Csah 14 over Stream | 1960 | 299 | Poor |
| Csah 4 over Big Cobb River | 1963 | 253 | Poor |
| CR 156 over Maple River | 1961 | 141 | Poor |
| Csah 10 over Perch Creek | 1955 | 125 | Poor |
| CR 101 over Morgan Creek | 1964 | 70 | Poor |
| CR 139 over Perch Creek | 1956 | 36 | Poor |
Busiest bridges in the county
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| US 14 over Minn River; Trail | 1976 | 39,000 | Fair |
| US 14 over Th 169 | 1976 | 39,000 | Fair |
| US 169 over Minn R UP RR; Str | 1960 | 34,432 | Fair |
| US 169 over Sibley St | 1992 | 23,523 | Fair |
| US 169 over Off Ramp From US 169 | 1987 | 23,523 | Fair |
| Unu 169 over Minn R UP RR; Street | 1985 | 22,949 | Poor |
| US 169 over S Riverfront Dr | 1992 | 19,700 | Fair |
| US 14 over Csah 5 | 1976 | 19,500 | Fair |
| US 14 over Csah 3 | 1976 | 18,538 | Fair |
| US 14 over Csah 5 | 1976 | 18,500 | 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.