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Bridge conditions in Guthrie County, Iowa

263 inventoried bridges · 94 rated poor · 2025 National Bridge Inventory

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

About one in 3 bridges in Guthrie County is rated in poor condition: 94 of 263 on the federal inventory, one of the higher shares in Iowa.

94 of the 263 bridges in Guthrie County, Iowa, are rated in poor condition (35.7%) in the 2025 National Bridge Inventory, as of August 20, 2026.
65 bridges (24.7%) are rated good and 104 (39.5%) fair.
The median Guthrie County bridge was built in 1977.
The busiest poor-rated bridge is F 65 over Middle River (built 1959), carrying about 996 vehicles a day.

Good 24.7% · Fair 39.5% · Poor 35.7% of 263 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
F 65 over Middle River	1959	996	Poor
FM over Middle River	1969	450	Poor
FM over Small Creek	1965	417	Poor
W South St over Middle Raccoon River	1965	358	Poor
FM over South Raccoon River	1975	329	Poor
Local over Seeley Creek	1968	199	Poor
FM over Mosquito Creek	1978	159	Poor
Local over Deer Creek	1947	150	Poor
FM over Bear Creek	1959	120	Poor
FM over S Raccoon River	1974	100	Poor
FM over Middle Raccoon	1951	100	Poor
FM over Small Stream	1954	89	Poor
FM over Small Creek	1957	79	Poor
FM over South Racoon River	1952	79	Poor
Main St over Drainage	1965	71	Poor
Local over Beaver Creek	1959	71	Poor
Local over Middle Racoon River	1959	71	Poor
FM over Brushy Creek	1952	71	Poor
Local over Middle River	1930	60	Poor
Local over Beaver Creek	2004	60	Poor
FM over Bear Creek	1959	60	Poor
Local over Trib. to Troublesome	1920	60	Poor
Local over Brushy Ck	1910	60	Poor
FM over Middle River	1959	50	Poor
Local over Middle River	1962	50	Poor
FM over South Racoon River	1957	50	Poor
Local over Stream	1977	50	Poor
Local over Stream	1973	50	Poor
FM over South Raccoon	1959	50	Poor
FM over Middle Racoon	1958	45	Poor
260TH Trail over Mason Creek	1987	45	Poor
Local over Small Creek	1949	40	Poor
Local over Middle River	1981	40	Poor
Local over South Fork Middle River	1971	40	Poor
Local over Trib to Mason Creek	1977	40	Poor
Local over Seely Creek	1957	40	Poor
FM over Troublesome Creek	1948	40	Poor
FM over Long Branch	1978	34	Poor
Local over Trib to Middle River	1966	34	Poor
Local over Elk Grove Branch	1985	34	Poor
Local over Frost Creek	1959	34	Poor
Local over Stream	1957	34	Poor
Local over Stream	1957	29	Poor
Local over Small Stream	1982	29	Poor
Local over Stream	1959	29	Poor
Local over Small Stream	1987	29	Poor
FM over South Raccoon	1957	26	Poor
Local over Stream	1940	26	Poor
Local over Small Creek	1920	26	Poor
Local over Small	1979	26	Poor
Local over Small	1980	26	Poor
FM over Small Creek	1934	26	Poor
FM over Small Stream	1984	26	Poor
Local over Stream	1943	20	Poor
Local over Stream	1975	20	Poor
Local over Deer Creek	1985	20	Poor
Local Rd over Small	1978	20	Poor
Local over Stream	1957	20	Poor
Local over Stream	1940	20	Poor
Local over S. Raccoon River	1959	20	Poor
FM over S Raccoon River	1959	20	Poor
Local over Stream	1959	20	Poor
Local over Trib to Mason Creek	1957	20	Poor
Local over Troublesome Creek	1957	20	Poor
Local over Trib. to Troublesome	1920	20	Poor
FM over Frost Creek	1959	20	Poor
Local over Stream	1977	20	Poor
Local over Small Creek	1949	15	Poor
Local over Tribute to Seely Creek	1988	15	Poor
Local over Stream	1941	15	Poor
FM over Frost Creek	1959	15	Poor
Local over Stream	1928	15	Poor
Local Rd over Stream	1920	15	Poor
Local over Small Stream	1987	15	Poor
Local over Beaver Creek	1920	11	Poor
Local over South Beaver Creek	1945	11	Poor
Local over Small Stream	1945	11	Poor
Local over Stream	1970	11	Poor
Local over Small Creek	1949	11	Poor
Local over Mason Creek	1940	11	Poor
Local over Mason Creek	1920	11	Poor
Local over Trib. to Troublesome	1970	11	Poor
Local over Troublesome Creek	1990	11	Poor
Local over Stream	1960	11	Poor
Local over Stream	1951	11	Poor
Local over South Raccoon River	1940	11	Poor
Local over Stream	1966	11	Poor
Local over South Raccoon River	1994	11	Poor
Miracle Ln over Stream	1950	11	Poor
Local over Stream	1930	5	Poor
Local over Stream	1940	5	Poor
Local over Stream	1940	5	Poor
Local over Stream	1940	5	Poor
Springbrook Sp over Stream	1934	–	Poor

Busiest bridges in the county

Bridge	Built	Vehicles/day	Condition
Ia 44 over Bays Branch Creek	1981	3,460	Good
Ia 44 over Branch Mosquito Creek	1981	3,460	Fair
Ia 25 over South Raccoon River	1983	3,200	Good
Ia 44 over Brushy Creek	1972	3,200	Fair
Ia 44 over Middle Raccoon River	1972	3,200	Fair
Ia 141 over Dry Run Creek	2004	2,160	Good
Ia 141 over Mosquito Creek	1996	2,160	Good
Ia 141 over Trib to Mosquito Creek	2014	2,060	Good
Ia 141 over Middle Raccoon Rvr & Trl	2014	1,950	Good
Ia 141 over Stream	1955	1,950	Fair

Source: FHWA National Bridge Inventory, 2025. Counts cover inventoried highway bridges over 20 feet; ratings are reported by the state DOT.

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Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.