Bridge conditions in Washington County, Iowa
207 inventoried bridges · 33 rated poor · 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
About one in 6 bridges in Washington County is rated in poor condition: 33 of 207 on the federal inventory, one of the higher shares in Iowa.
- 33 of the 207 bridges in Washington County, Iowa, are rated in poor condition (15.9%) in the 2025 National Bridge Inventory, as of .
- 82 bridges (39.6%) are rated good and 92 (44.4%) fair.
- The median Washington County bridge was built in 1987.
- The busiest poor-rated bridge is FM over Williams Creek (built 1936), carrying about 1,650 vehicles a day.
Good 39.6% · Fair 44.4% · Poor 15.9% of 207 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 Williams Creek | 1936 | 1,650 | Poor |
| B Ave over Small Stream | 1936 | 938 | Poor |
| 9TH Avenue over Smith Creek | 1928 | 920 | Poor |
| FM over N. Fork Long Creek | 1961 | 440 | Poor |
| FM over Small Stream | 1925 | 270 | Poor |
| FM over N. Fork Long Creek | 1925 | 160 | Poor |
| Co Rd W64 over Long Creek | 1929 | 140 | Poor |
| Underwood Ave over N Fork Long CR | 1953 | 131 | Poor |
| FM over Skunk River | 1957 | 120 | Poor |
| Local over Smith Creek | 1930 | 110 | Poor |
| Local Road over Small Stream | 1966 | 80 | Poor |
| Local Road over Whiskey Creek | 1969 | 71 | Poor |
| Local over S. Fork Long Creek | 1953 | 71 | Poor |
| Local over N Fork Long CR | 1973 | 60 | Poor |
| Local over Whiskey Creek | 1917 | 60 | Poor |
| Local Road over Small Stream | 1928 | 60 | Poor |
| FM over Small Stream | 1917 | 50 | Poor |
| FM over Deer Creek | 1953 | 50 | Poor |
| FM over Walnut Creek | 1955 | 45 | Poor |
| FM over Dutch Creek | 1956 | 45 | Poor |
| FM over Small Stream | 1927 | 45 | Poor |
| Local over Sm Stream | 1974 | 40 | Poor |
| FM over Br English River | 1927 | 40 | Poor |
| Local over Goose Creek | 1975 | 26 | Poor |
| Local Road over Small Stream | 1927 | 26 | Poor |
| Local Road over West Fork Crooked Creek | 1949 | 26 | Poor |
| Local Road over Whiskey Creek | 1929 | 20 | Poor |
| Local over Sm Stream | 1934 | 11 | Poor |
| Local Road over South Fork Long Creek | 1914 | 11 | Poor |
| Local Road over Small Stream | 1917 | 11 | Poor |
| Local over Davis Creek | 1980 | 11 | Poor |
| FM over Sm Stream | 1928 | 10 | Poor |
| Local over North Fork Long Creek | 1929 | 5 | Poor |
Busiest bridges in the county
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| US 218 over Whiskey Run Creek | 1984 | 14,900 | Fair |
| US 218 over Stream | 1984 | 14,900 | Fair |
| US 218 over Drainage | 1997 | 13,800 | Good |
| US 218 over Big Slough Creek | 1997 | 12,400 | Good |
| SB US 218 over Goose Creek | 1984 | 7,600 | Fair |
| SB US 218 over Davis Creek | 1984 | 7,600 | Fair |
| US 218 SB over English River | 1984 | 7,600 | Fair |
| NB US 218 over Goose Creek | 1994 | 7,450 | Good |
| NB US 218 over Davis Creek | 1994 | 7,450 | Good |
| NB US 218 over English River | 1994 | 7,450 | Good |
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.