Bridge conditions in Butler County, Iowa
287 inventoried bridges · 35 rated poor · 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
Of the 287 Butler County bridges in the federal inventory, 35 carry a poor rating. That 12.2% share is roughly 2x the national average.
- 35 of the 287 bridges in Butler County, Iowa, are rated in poor condition (12.2%) in the 2025 National Bridge Inventory, as of .
- 175 bridges (61.0%) are rated good and 77 (26.8%) fair.
- The median Butler County bridge was built in 1997.
- The busiest poor-rated bridge is Traer St over Ovrflw Shell Rock River (built 1900), carrying about 1,902 vehicles a day.
Good 61.0% · Fair 26.8% · Poor 12.2% of 287 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 |
|---|---|---|---|
| Traer St over Ovrflw Shell Rock River | 1900 | 1,902 | Poor |
| Cherry St over Drainage | 1900 | 1,429 | Poor |
| C33 over Small Stream | 1966 | 1,002 | Poor |
| FM over Landphere Creek | 1972 | 890 | Poor |
| FM over West Fork Cedar River | 1964 | 874 | Poor |
| T64 over Small Stream | 1968 | 776 | Poor |
| FM over Mc Clure Creek | 1970 | 470 | Poor |
| FM over West Fork Cedar River | 1970 | 373 | Poor |
| FM over Small Stream | 1970 | 373 | Poor |
| FM over Small Stream | 1969 | 373 | Poor |
| T47 over Shell Rock River | 1963 | 285 | Poor |
| Local over Small Stream | 1949 | 91 | Poor |
| FM over West Fork Cedar River | 1920 | 79 | Poor |
| 300 St over Small | 1979 | 73 | Poor |
| FM over Landphere Creek | 1964 | 70 | Poor |
| Local over Small Stream | 1966 | 70 | Poor |
| Local over Hartgrave Ck | 1952 | 59 | Poor |
| Local over Small Stream | 1969 | 51 | Poor |
| FM over Small Stream | 1964 | 49 | Poor |
| 120TH St over Stream | 1981 | 48 | Poor |
| Camp Comfort over Small Stream | 1936 | 42 | Poor |
| Local over Small Stream | 1965 | 41 | Poor |
| 160TH St over Stream | 1990 | 41 | Poor |
| Local over Small Stream | 1953 | 35 | Poor |
| 185TH St. over Stream | 1900 | 35 | Poor |
| FM over Small Stream | 1953 | 35 | Poor |
| Kipling Ave. over Cold Water Creek | 1915 | 30 | Poor |
| FM over Boylan Creek | 1967 | 29 | Poor |
| Local over Maynes Creek | 1900 | 26 | Poor |
| Quail Ave over Flood Creek | 1910 | 26 | Poor |
| Local over Beaver Creek | 1910 | 21 | Poor |
| Local over Crab Apple Creek | 1987 | 21 | Poor |
| Local over Small Stream | 1970 | 11 | Poor |
| Local over Small Stream | 1961 | 10 | Poor |
| Blue Bird Dr. over Cold Water Creek | 1905 | 5 | Poor |
Busiest bridges in the county
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Ia 3 over over Ianr RR | 1967 | 3,540 | Fair |
| Ia 3 over Shell Rock River | 1967 | 3,540 | Fair |
| Cherry St over Shell Rock River | 1915 | 3,435 | Fair |
| Ia 57 over Drainage Ditch | 1924 | 2,480 | Fair |
| Ia 57 over Beaver Creek | 2003 | 2,480 | Good |
| Ia 57 over Phelps Creek | 2017 | 2,400 | Good |
| Ia 57 over Drainage Ditch | 2023 | 2,400 | Good |
| Ia 3 over Stream | 1967 | 2,390 | Good |
| Ia 14 over Phelps Creek | 2011 | 2,300 | Good |
| Ia 57 over Drainage Ditch | 1971 | 2,260 | Fair |
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.