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Bridge conditions in Floyd County, Iowa

214 inventoried bridges · 30 rated poor · 2025 National Bridge Inventory

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

Floyd County has 30 bridges rated poor out of 214 inventoried, a 14.0% share that puts it well above the national rate of about 7%.

30 of the 214 bridges in Floyd County, Iowa, are rated in poor condition (14.0%) in the 2025 National Bridge Inventory, as of August 20, 2026.
108 bridges (50.5%) are rated good and 76 (35.5%) fair.
The median Floyd County bridge was built in 1990.
The busiest poor-rated bridge is Gilbert St over Shermans Creek (built 1914), carrying about 6,893 vehicles a day.

Good 50.5% · Fair 35.5% · Poor 14.0% of 214 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
Gilbert St over Shermans Creek	1914	6,893	Poor
Main St over Cedar River	1909	4,971	Poor
FM over Little Cedar River	1974	1,414	Poor
FM over Drainage Ditch	1919	1,159	Poor
Hwy 147 over Small Natural Stream	1967	1,070	Poor
Old Hwy Rd over Bloody Run Creek	1927	687	Poor
Hwy 147 over Flood Creek	1930	668	Poor
FM over Flood Creek	1975	491	Poor
FM over Winnebago River	1964	442	Poor
FM over Beaver Creek	1965	206	Poor
FM over Little Cedar	1967	167	Poor
FM over Flood Creek	1969	88	Poor
FM over Cedar River	1936	79	Poor
Local over Small Creek	1916	78	Poor
Local over Creek	1958	78	Poor
Local over Creek	1956	78	Poor
Local over Winnebago River	1900	59	Poor
FM over Little Cedar	1967	59	Poor
Local over Flood Creek	1900	49	Poor
Local over Flood Creek	1913	44	Poor
Local over Creek	1970	39	Poor
Local over Creek	1924	39	Poor
Local over Clear Water Creek	1927	33	Poor
Local over Littleflood Creek	1987	29	Poor
Local over Creek	1980	29	Poor
Local over Flood Creek	1929	26	Poor
Local over Little Cedar	1900	26	Poor
Local over Little Cedar Overflow	1939	26	Poor
Local over Beaver Creek	1937	20	Poor
Local over Flood Creek	1970	20	Poor

Busiest bridges in the county

Bridge	Built	Vehicles/day	Condition
US 18 over Stewart Creek	1998	11,200	Good
US 18 & 218 over Stewart Creek	1998	10,900	Good
US 18 over Drainage Ditch	1998	10,700	Good
US 18 over Cedar River	1967	10,500	Fair
US 218 over Stream	2001	10,200	Fair
US 218 over Bloody Run	1999	10,000	Good
US 218 over Stream	1998	10,000	Good
Gilbert St over Shermans Creek	1914	6,893	Poor
US 18 EB over Ia Northern RR & Stream	1998	5,350	Good
US 18 WB over Ia Northern RR & Stream	1998	5,350	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.