Bridge conditions in Clay County, Minnesota
224 inventoried bridges · 11 rated poor · 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
The federal inventory lists 224 bridges in Clay County: 121 rated good, 92 fair, and 11 poor.
- 11 of the 224 bridges in Clay County, Minnesota, are rated in poor condition (4.9%) in the 2025 National Bridge Inventory, as of .
- 121 bridges (54.0%) are rated good and 92 (41.1%) fair.
- The median Clay County bridge was built in 1988.
- The busiest poor-rated bridge is I 94 over Otvrr (built 1968), carrying about 8,148 vehicles a day.
Good 54.0% · Fair 41.1% · Poor 4.9% of 224 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 |
|---|---|---|---|
| I 94 over Otvrr | 1968 | 8,148 | Poor |
| I 94 over Otvrr | 1968 | 8,148 | Poor |
| US 10 over S Br Buffalo R | 1939 | 8,105 | Poor |
| Csah 36 over Red River of the North | 1949 | 135 | Poor |
| CR 51 over Stream | 1953 | 55 | Poor |
| T 31 over S Br Buffalo River | 1948 | 51 | Poor |
| T 215 over S Br Buffalo River | 1950 | 21 | Poor |
| CR 51 over Wolverton Creek | 1969 | 20 | Poor |
| T 183 over S Br Wild Rice River | 1915 | 18 | Poor |
| T 76 over Buffalo River | 1959 | 9 | Poor |
| T 240 over Stony Creek | 1945 | 5 | Poor |
Busiest bridges in the county
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I 94 over Co Ditch # 47 | 2003 | 36,000 | Good |
| I 94 over Red River;str | 1958 | 34,455 | Fair |
| I 94 over Red River;str | 1958 | 34,455 | Fair |
| Msas 126 over I 94 | 1973 | 22,815 | Fair |
| Msas 135 over BNSF RR; Cd #4 | 1997 | 17,960 | Fair |
| US 10 over Co Ditch # 41 | 1997 | 17,041 | Good |
| US 75 over I 94 | 2000 | 16,500 | Fair |
| I 94 over Co Ditch # 17 | 1970 | 16,295 | Fair |
| I 94 over Co Ditch # 31 | 1970 | 16,295 | Fair |
| US 10 over Red R of the N; 3RD St | 2003 | 15,450 | 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.