Bridge conditions in Benton County, Minnesota
118 inventoried bridges · 11 rated poor · 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
11 of the 118 bridges the federal inventory lists in Benton County are rated poor; the rest split 64 good and 43 fair.
- 11 of the 118 bridges in Benton County, Minnesota, are rated in poor condition (9.3%) in the 2025 National Bridge Inventory, as of .
- 64 bridges (54.2%) are rated good and 43 (36.4%) fair.
- The median Benton County bridge was built in 1989.
- The busiest poor-rated bridge is Csah 4 over Elk River (built 1973), carrying about 1,550 vehicles a day.
Good 54.2% · Fair 36.4% · Poor 9.3% of 118 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 |
|---|---|---|---|
| Csah 4 over Elk River | 1973 | 1,550 | Poor |
| Csah 12 over Little Rock Creek | 1967 | 1,100 | Poor |
| Csah 6 over St Francis River | 1967 | 560 | Poor |
| Csah 22 over W Br Rum River | 1966 | 540 | Poor |
| CR 51 over St Francis River | 1973 | 510 | Poor |
| Csah 12 over Elk River | 1965 | 380 | Poor |
| CR 56 over Bunker Hill Creek | 1971 | 350 | Poor |
| Csah 13 over Elk River | 1968 | 340 | Poor |
| Csah 7 over W Br Rum River | 1965 | 155 | Poor |
| CR 59 over Bunker Hill Creek | 1930 | 65 | Poor |
| CR 40 over Little Rock Creek | 1973 | 60 | Poor |
Busiest bridges in the county
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Mn 23 over US 10 | 2024 | 28,884 | Good |
| Mn 23 over US 10 | 2023 | 28,884 | Good |
| Mn 15 over Benton Dr Miss Rvr RR | 1993 | 26,000 | Fair |
| Msas 115 over Miss R BNSF RR Strs | 2006 | 20,400 | Good |
| US 10 over Csah 2 | 2013 | 12,750 | Good |
| US 10 over Csah 2 | 2013 | 12,750 | Good |
| Csah 29 over Miss R BNSF RR; Str | 1983 | 12,500 | Fair |
| Mn 23 over Mayhew Creek | 1995 | 12,475 | Good |
| US 10 over Little Rock Lake | 1990 | 12,000 | Fair |
| US 10 over Little Rock Lake | 1962 | 12,000 | 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.