Bridge conditions in Marion County, Iowa
217 inventoried bridges · 28 rated poor · 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
About one in 8 bridges in Marion County is rated in poor condition: 28 of 217 on the federal inventory, one of the higher shares in Iowa.
- 28 of the 217 bridges in Marion County, Iowa, are rated in poor condition (12.9%) in the 2025 National Bridge Inventory, as of .
- 82 bridges (37.8%) are rated good and 107 (49.3%) fair.
- The median Marion County bridge was built in 1982.
- The busiest poor-rated bridge is FM over English Creek (built 1975), carrying about 2,640 vehicles a day.
Good 37.8% · Fair 49.3% · Poor 12.9% of 217 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 |
|---|---|---|---|
| FM over English Creek | 1975 | 2,640 | Poor |
| FM over BNSF RR and Stream | 1964 | 2,620 | Poor |
| Main St over over UP RR | 1940 | 1,210 | Poor |
| FM over Long Branch Creek | 1967 | 880 | Poor |
| FM over Competine Creek | 1967 | 710 | Poor |
| G76 over Small Stream | 1964 | 500 | Poor |
| G76 over Small Stream | 1964 | 400 | Poor |
| Old Iowa 92 over Drainage Ditch | 1976 | 290 | Poor |
| FM over Skunk River | 1954 | 224 | Poor |
| FM over Stream | 1981 | 120 | Poor |
| Local over Small Stream | 1984 | 91 | Poor |
| FM over Hawkrun Creek | 1967 | 70 | Poor |
| Local over Branch Skunk River | 1970 | 62 | Poor |
| Local over Stream | 1958 | 62 | Poor |
| Local over Stream | 1967 | 41 | Poor |
| Local over Brush Creek | 1910 | 41 | Poor |
| 94TH Place over Tracey Creek | 1958 | 40 | Poor |
| Local over Stream | 1972 | 34 | Poor |
| Local over Stream | 1953 | 30 | Poor |
| Local over Stream | 1956 | 30 | Poor |
| Local over Stream | 1960 | 30 | Poor |
| Local over Br Des Moines River | 1878 | 21 | Poor |
| Local over Stream | 1925 | 16 | Poor |
| Local over Calhoun Creek | 1953 | 16 | Poor |
| Local over Hickory Creek | 1997 | 15 | Poor |
| Local over N Cedar Creek | 1994 | 11 | Poor |
| Local over Hawk Run | 1925 | 11 | Poor |
| Ag and Dnr Traffic over Prairie Creek | 1952 | 1 | Poor |
Busiest bridges in the county
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| SR G28 over Ia 163 | 1994 | 10,500 | Good |
| Clark St over Ia 163 | 1994 | 6,400 | Fair |
| Idaho Dr over Ia 163 | 1994 | 5,322 | Good |
| SB Ia 5 & EB 92 over White Breast Creek | 1965 | 4,200 | Fair |
| NB Ia 5 & WB 92 over White Breast Creek | 1978 | 4,200 | Fair |
| Ia 92 EB & Ia 5 SB over 135TH Place | 1978 | 3,950 | Good |
| Ia 92 WB & Ia 5 NB over 135TH Place | 1978 | 3,950 | Good |
| Ia 92 over English River | 1978 | 3,870 | Good |
| Ia 92 over Drainage Ditch | 1978 | 3,870 | Good |
| Ia 92 over 165TH Ave | 1978 | 3,840 | 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.