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Every bridge in O'Brien County, Iowa

Name: Every bridge in O'Brien County, Iowa
Creator: Bridge Report Card
License: https://creativecommons.org/publicdomain/zero/1.0/

263 inventoried bridges, busiest first

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

O'Brien County, Iowa, has 263 bridges in the 2025 National Bridge Inventory: 128 rated good, 119 fair, and 16 poor (as of August 20, 2026).
This index lists every one of them, busiest first; each links to its own condition record.

Bridge	Built	Vehicles/day	Condition
Ia 60 over Engels Creek	2006	5,300	Good
US 18 over Branch Little Floyd Rvr	1958	4,530	Fair
US 18 over Drainage Ditch	1958	4,530	Fair
US 18 over Little Floyd River	1957	4,230	Fair
US 18 over Stream	1959	3,640	Fair
US 18 over Stream	1958	3,530	Fair
US 18 over Waterman Creek	2020	3,530	Good
US 18 over Drainage Ditch	1957	3,210	Fair
Ia 60 NB over Floyd River	2004	2,650	Good
Ia 60 SB over Floyd River	2004	2,650	Good
Ia 60 NB over Dme RR	2005	2,600	Good
Ia 60 SB over Dme RR	2005	2,600	Good
Ia 10 over Mud Creek	2023	1,770	Good
Ia 60 NB over U.S. 18	2004	1,735	Good
Ia 60 SB over US 18	2004	1,735	Good
US 59 & Ia 10 over Nelson Creek	1991	1,460	Good
US 59 & Ia 10 over Willow Creek	1971	1,460	Fair
US 59 over Mill Creek	1973	1,420	Good
FM over Lamkin Creek	1976	1,337	Good
FM over Little Floyd River	1987	1,337	Good
Northwest Blvd over Floyd River	1982	1,296	Fair
FM over Stofferan Creek	1976	1,277	Fair
US 59 over Branch Floyd River	1976	1,170	Fair
US 59 over Dry Run	1973	1,170	Good
US 59 over Dry Run	1973	1,170	Fair
US 59 over Mill Creek	1973	1,170	Fair
FM over Dry Run	1998	1,168	Good
Ia 10 over Dry Run	1969	1,130	Fair
Ia 10 over Mill Creek	1969	1,130	Good
FM over Little Waterman Creek	1969	1,117	Good
FM over Mill Creek	1984	1,087	Fair
FM over Mill Creek Branch	1959	1,087	Fair
FM over W Branch Mill Creek	1959	1,087	Fair
FM over Waterman Creek	1937	1,057	Fair
FM over Stofferan Creek	1971	968	Fair
FM over Jordan Creek	1969	948	Fair
FM over Dry Run	1961	917	Fair
FM over Mill Creek	1961	917	Fair
FM over Small Un-named Creek	1992	917	Fair
FM over Murray Creek	1987	880	Good
FM over Mud Creek	2002	878	Fair
FM over Willow Creek	1955	878	Good
FM over Mill Creek	2000	828	Good
FM over Willow Creek	1972	828	Fair
Fas Major B-40 over Roetzel Creek	2006	828	Good
FM over Mccreath Creek	1953	797	Fair
FM over Waterman Creek	1953	797	Good
330TH Street over Ia 60	2005	619	Good
FM over Little Floyd River	1963	609	Fair
FM over Willow Creek	1987	609	Good
Ia 10 over Little Sioux River	1989	590	Good
FM over Mill Creek	1979	538	Fair
FM over Floyd River	1989	530	Good
FM over Floyd River	1962	518	Fair
Monroe Ave over Floyd River Overflow	2020	518	Good
FM over Small Un-named Creek	1969	509	Fair
FM over Small Un-named Creek	1988	509	Good
FM over Floyd River	1986	489	Good
FM over Little Floyd River	1992	489	Good
FM over Willow Creek	2010	478	Good
FM over Wolf Creek	1966	469	Fair
FM over Mill Creek	1971	459	Good
FM over So Br Little Floyd River	2009	459	Good
FM over Little Floyd River	1968	409	Fair
FM over Unnamed Stream	1980	409	Good
FM over Waterman Creek	1963	409	Good
Oriole Ave over Grass Waterway	1965	409	Fair
Oriole Ave over So Br Little Floyd River	1989	409	Good
FM over Plessis Creek	1964	309	Good
FM over Waterman Creek	1965	309	Good
FM over Waterman Creek	1977	309	Fair
FM over Little Waterman Creek	1955	300	Fair
FM over Willow Creek	1964	279	Poor
FM over Willow Creek	2003	259	Fair
Nest Avenue over Ia 60	2004	259	Good
FM over Floyd River	1962	240	Fair
FM over Small Un-named Creek	1998	240	Good
FM over Mud Creek	1900	210	Fair
FM over Waterman Creek	1961	210	Fair
Oriole Ave over Johnson Creek	2015	210	Good
FM over Engels Creek	1925	199	Fair
FM over Floyd River	2004	199	Good
FM over Ginger Creek	1928	180	Fair
FM over Mill Creek	2008	159	Good
FM over Whiskey Creek	1990	159	Fair
Local Sec Rd over Mud Creek	1934	103	Fair
Monroe Ave over Ia 60	2005	100	Good
350TH St over Waterman Creek	2017	72	Good
Local over Epping Creek	1985	72	Good
Local over Mud Creek	1950	72	Fair
Local over Waterman Creek	1983	72	Good
420TH St over Barry Creek	2011	71	Good
FM over Floyd River	2001	71	Good
FM over Mill Creek	1970	71	Fair
FM over Mud Creek	1968	71	Fair
FM over No Folk Floyd River	1994	71	Fair
330TH St over Small Un-named Creek	2004	62	Good
Local Sec Rd over Lange Creek	1954	62	Fair
Local Sec Rd over Mill Creek	1940	62	Fair
Local over Ginger Creek	1952	62	Poor
Local over Lange Creek	1954	62	Fair
Local over Small Un-named Creek	1974	62	Fair
Local over Small Un-named Creek	1978	62	Good
Local over Waterman Creek	1982	62	Good
FM over Drainage Way	1946	60	Fair
FM over Dry Run	2001	60	Good
FM over Johnson Creek	2000	50	Good
FM over Little Floyd River	1968	50	Fair
FM over Mill Creek	1985	50	Good
FM over Small Un-named Creek	1939	50	Fair
Local Rd over Little Floyd River	1959	50	Fair
Local Rd over Nelson Creek	1990	50	Good
Local Sec Rd over Mud Creek	1939	50	Fair
Local Sec Rd over Mud Creek	1939	50	Fair
Local Sec Rd over Waterman Creek	1988	50	Good
Local over Dry Run	1947	50	Fair
Local over Floyd River	1986	50	Good
Local over Grass Waterway	1954	50	Poor
Local over Mill Creek	1924	50	Poor
Local over Small Un-named Creek	1991	50	Good
Local over Sweeney Creek	2013	50	Fair
White Ave over Sewer Creek	2000	50	Good
330TH St over Little Floyd River	2011	46	Fair
Local over Little Floyd River	1975	46	Fair
Local over Mill Creek	1970	46	Fair
Local over So Br Little Floyd River	2001	46	Good
Local over West Branch Mill Creek	1966	46	Good
Nest Ave over Lamkin Creek	2014	46	Good
Nest Ave over Little Floyd River	2012	46	Good
Polk Ave over Mill Creek	2021	46	Good
FM over Floyd River	1969	45	Fair
FM over Henry Creek	1950	45	Fair
FM over Lange CR	1967	45	Good
FM over Waterman CR	2005	45	Good
Silver Ave over Nelson Creek	2016	45	Good
340TH St over Waterman Creek	2021	41	Good
Local Sec Rd over Barry Creek	1900	41	Fair
Local Sec Rd over Nelson Creek	1941	41	Fair
Local Sec Rd over Willow CR	2001	41	Fair
Local over Barry Creek	1980	41	Fair
Local over Little Floyd River	1992	41	Good
Local over Little Floyd River	1992	41	Good
Local over Mccreath Creek	1980	41	Fair
Local over Mill Creek	1939	41	Fair
Local over Waterman Creek	1950	41	Fair
Olive Ave over Mud Creek	2012	41	Good
Silver Ave over Willow Creek	2017	40	Good
Local Sec Rd over Waterman Creek	1955	35	Fair
Local over Cole Creek	1998	35	Good
Local over Floyd River	2008	35	Good
Local over Floyd River	1954	35	Fair
Local over Jordan Creek	1995	35	Good
Local over Lamkin Creek	1945	35	Poor
Local over Little Waterman Creek	1952	35	Good
Local over Mill Creek	1924	35	Fair
Local over Small Un-named Creek	1973	35	Fair
Local over So Br Little Floyd River	1975	35	Good
Redwood Ave over Dry Run	2023	35	Good
Tanager Ave over Waterman Creek	2022	35	Good
Warbler Ave over Little Waterman CR	2019	35	Good
420TH St over Mccreath Creek	2015	34	Good
FM over Small Un-named Creek	1935	34	Fair
FM over Waterman Creek	2003	34	Poor
FM over Whiskey Creek	1927	34	Fair
440TH St over Dry Run	2012	30	Good
FM over Small Un-named Creek	1996	30	Fair
FM over Waterman Creek	2004	30	Fair
Local Sec Rd over Deep CR	1989	30	Good
Local Sec Rd over Drainage Way	2008	30	Good
Local Sec Rd over Nelson CR	1935	30	Fair
Local Sec Rd over Small Un-named Creek	2006	30	Good
Local over Floyd River	1981	30	Good
Local over Lake Creek	2006	30	Fair
Local over Little Waterman Creek	1952	30	Fair
Local over Little Waterman Creek	1940	30	Fair
Local over Ocheyedan River	1933	30	Fair
Local over Plessis Creek	1999	30	Good
Local over Sewer Creek	1983	30	Fair
Local over So Br Little Floyd River	1937	30	Fair
Local over Sweeney Creek	1995	30	Good
Local over W Br Mill Creek	1947	30	Fair
Local over Waterman Creek	1952	30	Fair
Local over Waterman Creek	1952	30	Fair
Polk Ave over Dry Run Creek	2021	30	Good
Polk Ave over So Br Little Floyd River	2015	30	Good
Sorrel Ave over Willow Creek	2017	30	Good
Starling Ave over Dry Run	2018	30	Good
290TH St over Floyd River	2018	26	Fair
450TH St over Mud Creek	2011	26	Good
B46 420TH St over Waterman Creek	2022	26	Good
FM over Small Un-named Creek	1969	26	Good
Local Sec Rd over Dry Run	1935	26	Fair
Local Sec Rd over Grass Waterway	1900	26	Fair
Local Sec Rd over Lange Creek North	1998	26	Fair
Local Sec Rd over Lange Creek South	2001	26	Good
Local Sec Rd over Roetzel Creek	1925	26	Fair
Local Sec Rd over Sewer Creek	1991	26	Good
Local Sec Rd over Stofferan Creek	2010	26	Fair
Local Sec Rd over Waterman Creek	1951	26	Fair
Local Sec Rd over Willow CR	1919	26	Poor
Local Sec Rd over Willow Creek	1935	26	Poor
Local over Floyd River	1939	26	Fair
Local over Floyd River	1900	26	Poor
Local over Floyd River Overflow	1933	26	Fair
Local over Lake Creek	1979	26	Fair
Local over W Br Mill Creek	1925	26	Poor
Local over Waterman Creek	1933	26	Fair
Local over Wolf Creek	1900	26	Fair
Local over Wolf Creek	1991	26	Good
Oak Hill Ave over Little Floyd River	2020	26	Fair
Starling Ave over Willow Creek	2014	26	Good
Warbler Ave over Jordan Creek	2016	26	Good
300TH St over Plessis Creek	2017	21	Good
410TH St over Johnson Creek	2019	21	Fair
410TH St over Mill Creek	2012	21	Good
Local Sec Rd over Dry Run	1949	21	Good
Local over Barry Creek	1938	21	Poor
Local over Engels Creek	1932	21	Fair
Local over Engels Creek	1981	21	Good
Local over Floyd River	1982	21	Good
Local over Floyd River	1995	21	Good
Local over Lake Creek	1992	21	Fair
Local over Little Waterman Creek	2006	21	Good
Local over Mill Creek	1989	21	Fair
Local over W Br Whiskey Creek	1978	21	Fair
Redwing Ave over Floyd River	2005	21	Fair
Sorrel Ave over Dry Run	2017	21	Good
Wilson Ave over Small Unnamed Creek	2016	21	Good
Wilson Ave over Waterman Creek	2020	21	Good
FM over Ocheyedan River	1979	20	Good
FM over Ocheyedan River Overflow	1951	20	Fair
480TH St over Willow Creek	2018	15	Good
FM over Deep Creek	1934	15	Fair
Local Sec Rd over Barry Creek	1976	15	Good
Local Sec Rd over Ginger CR	1900	15	Poor
Local Sec Rd over Mccreath CR	2001	15	Good
Local Sec Rd over Mccreath CR	1940	15	Fair
Local Sec Rd over Murray CR	1900	15	Fair
Local Sec Rd over Roetzel Creek	1950	15	Fair
Local over Floyd River	1987	15	Good
Local over Floyd River	2009	15	Fair
Local over Little Waterman CR	1925	15	Fair
Local over Mill Creek	1988	15	Good
Local over Mill Creek	1935	15	Poor
Local over Nelson CR	1938	15	Fair
Local over W Br Mill Creek	1928	15	Fair
Local over Waterman Creek	1978	15	Good
Pierce Ave over W Br Mill Creek	1966	15	Fair
Van Buren Ave over Waterman Creek	2020	15	Good
Local over Mill Creek	1998	11	Good
Local over Murray Creek	1991	11	Good
Local over Small Un-named Creek	1991	11	Good
Local over Willow CR	1978	11	Fair
Local over Willow Creek	1900	11	Poor
Local over Willow Creek	2004	11	Good
Monroe Ave over Deep Creek	2007	11	Fair
Polk Ave over Mill Creek	2022	11	Good
Sorrell Ave over Ginger Creek	2016	11	Good
500TH St over Dog Creek	2009	10	Good
Local Sec Rd over Lange Creek South	1969	5	Good
Local over So Br Little Floyd River	2002	5	Good
Sec Rd over Jordan Creek	1916	–	Poor
Sec Rd over Waterman CR	1915	–	Poor

Source: FHWA National Bridge Inventory, 2025.

O'Brien County bridge conditions · Iowa bridges by county.

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