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Bridge conditions in Washington County, Iowa

207 inventoried bridges · 33 rated poor · 2025 National Bridge Inventory

United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled August 20, 2026

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 August 20, 2026.
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.

Every bridge in Washington County → - all 207, busiest first, each with its own condition record.

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.