Bridge conditions in Cherokee County, Iowa
244 inventoried bridges · 68 rated poor · 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
Cherokee County has 68 bridges rated poor out of 244 inventoried, a 27.9% share that puts it well above the national rate of about 7%.
- 68 of the 244 bridges in Cherokee County, Iowa, are rated in poor condition (27.9%) in the 2025 National Bridge Inventory, as of .
- 86 bridges (35.2%) are rated good and 90 (36.9%) fair.
- The median Cherokee County bridge was built in 1974.
- The busiest poor-rated bridge is W Bluff St over Railroad Creek (built 1961), carrying about 3,529 vehicles a day.
Good 35.2% · Fair 36.9% · Poor 27.9% of 244 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 |
|---|---|---|---|
| W Bluff St over Railroad Creek | 1961 | 3,529 | Poor |
| Fm-530th St over W Fork Little Sioux | 1968 | 898 | Poor |
| Main St over Aurelia Creek | 1939 | 841 | Poor |
| Union St over Railroad Creek | 1900 | 803 | Poor |
| Euclid Ave over Railroad Creek | 1900 | 699 | Poor |
| FM J Ave over Bear Creek | 1940 | 538 | Poor |
| E. Maple St over Railroad Creek | 1900 | 472 | Poor |
| Fm- Y Ave over Little Maple River | 1971 | 439 | Poor |
| Fm-l Ave. over Small Creek | 1900 | 429 | Poor |
| E. Willow St over Railroad Creek | 1900 | 377 | Poor |
| M21 W Ave over Branch Maple River | 1970 | 369 | Poor |
| FM 450TH St over Grey Creek | 1970 | 319 | Poor |
| Fm-h Ave. over Willow Creek | 1924 | 199 | Poor |
| Local-keeln Rd. over Badger Creek | 1917 | 170 | Poor |
| Fm-480th St. over Little Sioux River | 1965 | 60 | Poor |
| Local-g Ave. over Small Creek | 1924 | 50 | Poor |
| FM 570TH St over Gere Creek | 1951 | 50 | Poor |
| FM 590TH St. over Rock Creek | 1970 | 45 | Poor |
| Local 470TH St over Grey Creek | 1920 | 45 | Poor |
| Local 460TH St over Bear Creek | 1916 | 45 | Poor |
| Local F Ave over Four Mile Creek | 1924 | 45 | Poor |
| Local-490th St over Maple River | 1900 | 40 | Poor |
| Local 470TH St over Creek | 1924 | 40 | Poor |
| Local-v Ave. over Maple River | 1957 | 34 | Poor |
| Local-520th St. over Fiddle Creek | 1924 | 34 | Poor |
| Local- F Ave over Small Creek | 1919 | 30 | Poor |
| 590TH St over Maple River | 1919 | 30 | Poor |
| Local- 630TH St over Maple River | 1900 | 26 | Poor |
| Local 540TH St. over Perry Creek | 1982 | 26 | Poor |
| Local-v Ave. over Small Creek | 1917 | 26 | Poor |
| Local-520th St over Willow CR | 1973 | 26 | Poor |
| Fm-f Ave. over W Fork Little Sioux Rvr | 1924 | 26 | Poor |
| Local 440TH St over Creek | 1923 | 26 | Poor |
| Local- 600TH St over Rock Creek | 1900 | 20 | Poor |
| Local-630th St over N Pierson Creek | 1920 | 20 | Poor |
| M25 Y Ave over Pitcher Creek | 1921 | 20 | Poor |
| Local M Ave. over Br Perry Creek | 1928 | 20 | Poor |
| Local 560TH St. over Rock Creek | 1946 | 20 | Poor |
| Local 540TH St over West Fork Little Sioux | 1925 | 20 | Poor |
| Local 560TH St over Fiddle Creek | 1915 | 20 | Poor |
| Local B Ave. over Fiddle Creek | 1915 | 20 | Poor |
| Local-500th St over Br Maple River | 1919 | 20 | Poor |
| Local 430TH St over Creek | 1936 | 20 | Poor |
| Local G Ave over Four Mile Creek | 1976 | 20 | Poor |
| Local- U Ave over Pitcher CR | 1926 | 15 | Poor |
| Local-u Ave over Overflow Channel | 1925 | 15 | Poor |
| Local- S Ave over Creek | 1916 | 15 | Poor |
| Local- 630TH St over Willow Creek | 1917 | 15 | Poor |
| Local 580TH St over Small Creek | 1900 | 15 | Poor |
| Lcl Sleep H. Rd over Creek | 1971 | 15 | Poor |
| Local 460TH St over Grey Creek | 1927 | 15 | Poor |
| Local L Ave over Mill Creek | 1917 | 15 | Poor |
| Local 440TH St over Creek | 1900 | 15 | Poor |
| Local- 600TH St over Maple River | 1921 | 11 | Poor |
| Local 570TH St over Maple River | 1918 | 11 | Poor |
| Local W Ave. over Pitcher Creek | 1923 | 11 | Poor |
| Local 570TH St. over Perry Creek | 1948 | 11 | Poor |
| Local 540TH St over Small Creek | 1919 | 11 | Poor |
| Local B Ave. over West Fork Little Sioux | 1916 | 11 | Poor |
| 440TH St over Creek | 1931 | 11 | Poor |
| Lcl Mrt.acc.rd over Stream | 1917 | 11 | Poor |
| Local 460TH St over Sioux River | 1931 | 11 | Poor |
| 570TH St over Pitcher 153 | 1900 | 11 | Poor |
| U Ave over Maple Creek | 1976 | 5 | Poor |
| FM 590TH St. over Pitcher Creek | 1924 | 5 | Poor |
| Local 580TH St. over Rock Creek | 1917 | 5 | Poor |
| LOCAL580TH St over Fiddle Creek | 1917 | 5 | Poor |
| 510TH St over West Fork Little Sioux | 1917 | 5 | Poor |
Busiest bridges in the county
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| US 59 over Railroad Creek | 1973 | 7,200 | Fair |
| US 59 over Westcott Pk Loop | 1972 | 4,510 | Fair |
| US 59 over Little Sioux River | 1973 | 4,510 | Fair |
| W Bluff St over Railroad Creek | 1961 | 3,529 | Poor |
| Ia 3 over Fork Little Sioux River | 1979 | 3,410 | Fair |
| Ia 3 over Maple River | 1985 | 3,270 | Fair |
| Ia 3 over Little Sioux River | 1960 | 3,230 | Fair |
| US 59 over Coonley Creek | 1972 | 2,900 | Fair |
| US 59 over Cn RR | 1972 | 2,900 | Fair |
| Main Street over Railroad Creek | 1949 | 2,279 | 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.