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Every bridge in Sioux County, Iowa

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

448 inventoried bridges, busiest first

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

Sioux County, Iowa, has 448 bridges in the 2025 National Bridge Inventory: 281 rated good, 153 fair, and 14 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
US 75 over Stream	1998	7,300	Good
US 75 over W Fork Floyd River	1989	7,300	Good
US 18 over Rogg Creek	1985	6,700	Good
Ia 60 over Stream	1991	6,500	Good
Ia 10 over Floyd River	1993	5,300	Fair
US 18 over Drainage Ditch	1976	5,200	Fair
US 18 over West Fork Floyd River	1976	5,200	Fair
US 18 over Floyd River	1992	5,100	Fair
Ia 10 over Orange City Slough	1977	4,060	Fair
Ia 10 over over UP RR	1983	3,790	Fair
Albany Ave.n over Orange City Slough	1973	3,610	Fair
US 75 over Drainage Ditch	1972	3,610	Fair
US 75 over W Fork Floyd River	1972	3,610	Fair
US 75 over W Fork Floyd River	1972	3,610	Fair
Ia 60 SB over Floyd River Tributary	2003	3,450	Fair
Ia 60 NB over Little Floyd River	2005	3,250	Good
Ia 60 SB over Little Floyd River	2006	3,250	Good
Ia 60 NB over Floyd River Tributary	1932	3,200	Fair
US 18 over Old Channel Rock River	1989	3,160	Good
US 18 over Rock River	2002	3,160	Good
US 18 over Drainage Ditch	1944	3,040	Fair
US 18 over Dry Run Creek	2007	3,040	Good
FM over Creek	1965	2,992	Good
FM over Small	1900	2,992	Fair
FM over W Fork Floyd River	1967	2,992	Fair
FM over Rock River Overflow	1950	2,963	Fair
K30 Elmwood Ave over Rock River	2017	2,963	Good
Ia 10 over Dry Creek	1973	2,960	Fair
FM over Stream	1998	2,930	Good
Local over Small	1940	2,930	Good
Ia 10 over Dry Creek	1955	2,800	Fair
US 75 over Burr Oak Creek	2011	2,610	Good
Ia 12 over Dry Creek	1963	2,580	Good
Ia 60 NB over Mckinley Ave	2004	2,550	Good
Ia 60 SB over Mckinley Ave	2004	2,550	Good
FM over Small Stream	1985	2,539	Good
Ia 60 NB over Willow Creek	2003	2,485	Good
Ia 60 SB over Willow Creek	2003	2,485	Good
Local over Small	2004	2,324	Good
Ia 10 over Six Mile Creek	1987	2,210	Good
Ia 60 SB over Iowa 10	2002	2,075	Good
Ia 60 NB over Iowa 10	2002	2,060	Good
Ia 10 over Spring Creek	1987	2,040	Good
Ia 60 NB over B 58 & UPRR	2002	2,035	Good
Ia 60 NB over Floyd River	2002	2,035	Good
Ia 60 SB over B 58 & UPRR	2002	2,035	Good
Ia 60 SB over Floyd River	2002	2,035	Good
FM over Creek	1977	1,926	Good
FM over Sixmile Creek	1972	1,926	Fair
Ia 10 over Big Sioux River	1991	1,910	Fair
Ia 10 over Drainage Ditch	1954	1,910	Good
Ia 10 over Stream	1989	1,900	Fair
Ia 10 over W Br Floyd River	1989	1,900	Fair
Ia 60 SB over 450TH Street	2002	1,880	Good
NB Ia 60 over 450TH Street	2003	1,880	Good
Ia 10 over Willow Creek	2008	1,850	Good
3RD Ave over Floyd River	1933	1,807	Fair
B40 over Floyd River	1977	1,795	Fair
K30 Eagle Ave over Indian Creek	2006	1,555	Good
FM over Sm Stream	1933	1,416	Good
County Rd over Willow Creek	1991	1,347	Fair
FM over Six Mile Creek	1982	1,337	Good
FM over Big Sioux River	2009	1,277	Fair
FM over No Name Creek	1965	1,277	Fair
K64 over Small Stream	1984	1,277	Good
L 14 over Otter Creek	1991	1,267	Good
L 14 over Otter Creek Overflow	1991	1,267	Good
K52 over Small Stream	1978	1,257	Good
FM over Creek	1999	1,236	Good
Local over Small	2006	1,236	Good
FM over Small Stream	1984	1,147	Fair
Ia 12 over Drainage	1954	1,130	Good
Ia 12 over Six Mile Creek	2013	1,130	Good
K64 over Unnamed Creek	1900	1,117	Fair
Local over Small Stream	1960	1,117	Good
Local over Small Creek	1985	1,100	Good
FM over Burr Oak Creek	1967	1,097	Fair
FM over Burr Oak Creek	1973	1,087	Good
FM over Dry Creek	1967	1,077	Fair
B30 360TH St over Rock River	2023	1,017	Good
K64 over Floyd River	1975	995	Good
370TH St over No Name Creek	1965	988	Good
B 30 370TH St over No Name Creek	2018	988	Good
FM over Creek	2003	957	Good
FM over Dry Creek	2010	957	Good
FM over Sixmile Creek	1973	957	Good
Garfield Ave over Small	1977	900	Good
FM over No Name	1974	898	Good
FM over Six Mile Creek	1978	898	Good
FM over Dry Creek	2004	857	Good
FM over Orange City Slough	2002	823	Good
FM over Floyd River	1954	813	Poor
Local over Small	1977	808	Good
FM over No Name Creek	1966	789	Good
FM over No Name Creek	1966	789	Fair
FM over Spring Creek	1974	748	Good
FM over West Branch	1963	738	Fair
FM over No Name	1974	722	Good
FM over Willow CR	1973	722	Good
L14 over Small Stream	1954	722	Fair
FM over No Name Creek	1971	718	Good
FM over Small Creek	1976	718	Good
FM over Floyd River	1968	679	Fair
10TH St over Big Sioux River	1980	670	Fair
17TH St over Creamery Creek	1968	650	Fair
FM over Indian Creek	1967	649	Poor
FM over No Name Creek	1967	649	Fair
K 30 Eagle Ave over Small Stream	2019	638	Good
K30 Eagle Ave over Small Stream	2019	638	Good
FM over Otter Creek	1962	619	Fair
FM over Otter Creek	1962	619	Fair
FM over Otter Creek 2ND Channel	1962	619	Fair
FM over Stream	1995	619	Good
A54B over No Name Creek	2021	609	Good
FM over No Name Creek	1965	609	Good
Kingbird Ave over Small	2010	578	Good
L14 Kingbird Ave over No Name Creek	2016	578	Good
L14 over Floyd River	1969	578	Fair
Local over Small	1976	569	Good
Local over Small Stream	1989	549	Good
FM over W Branch Floyd River	1942	548	Fair
B46 over No Name Creek	1966	538	Poor
FM over Dry Creek	1966	538	Fair
FM over Dry Creek	1973	529	Good
FM over Indian Creek	1965	469	Poor
Birch Ave over Big Sioux River	1966	450	Fair
FM over Orange City Slough	2003	450	Good
FM over Six Mile Creek	1993	439	Good
K24 Dogwood Ave over No Name Creek	2017	429	Good
FM over Dry Creek	1964	419	Fair
FM over Six Mile Creek	1971	379	Good
FM over No Name Creek	1973	369	Good
FM over No Name Creek	1964	369	Fair
L22 over Small Stream	1955	366	Good
380TH St over Small Stream	2000	359	Good
L22 over Willow Creek	1955	359	Good
FM over Barnes Creek	1993	345	Good
FM over Deep Creek	1998	345	Good
470TH Street over Ia 60	2003	300	Good
FM over No Name Creek	1966	270	Fair
FM over No Name Creek	1968	270	Fair
L 22 over Small	2004	270	Good
Lily Ave over Small	2008	270	Good
14TH St over Creamery Creek	1961	257	Poor
Local over Sm Stream	2011	240	Good
Garfield St over Drainage	1900	232	Poor
Local over No Name Creek	2011	219	Good
FM over Stream	1960	210	Good
Local over Floyd River	1965	199	Fair
Local over Small Stream	1965	199	Fair
K Ave over Dry Creek	1938	185	Fair
410TH St over Small Stream	2007	159	Good
FM over No Name Creek	1993	159	Good
FM over No Name Creek	1988	159	Good
FM over Rock River	1961	159	Fair
K 52 (ibex Ave) over Creek	2013	150	Good
FM over Rock River	1969	139	Fair
Local over Floyd River	2005	139	Good
L12 over No Name Creek	1982	133	Good
Local over Branch of Rock River	1983	131	Good
Local over Small	1987	131	Fair
Local over Stream	1978	131	Good
Local over W Fork Floyd Riv	1969	131	Fair
Local over Small Stream	2001	122	Good
FM over West Branch Floyd River	1983	120	Good
Local over Sm Stream	1977	120	Fair
Local over Small Stream	1985	120	Good
Local over Small Stream	1938	120	Fair
Local over Small	2010	110	Good
Local over Small	1978	110	Good
Local over Small	1954	110	Fair
Local over Small Stream	1900	110	Poor
Local over Stream	1985	110	Good
Local over Creek	1990	100	Good
Local over Sm Stream	2001	100	Good
Local over Small Stream	1995	100	Good
Local over Small Stream	1980	100	Fair
Local over West Branch	1950	100	Fair
Fourth St over Drainage	1992	91	Good
FM over Indian Creek	1984	90	Fair
Kennedy Ave over Small Stream	2016	90	Good
Local over Small	1988	90	Fair
Local over Small Stream	1999	90	Good
Local over Small Stream	1995	90	Good
360TH St over Small Stream	2000	80	Fair
FM over No Name Creek	1990	80	Good
Local over Sm Stream	2001	80	Good
Local over Small	2009	80	Good
Local over Small	1980	80	Good
Local over Small	1981	80	Fair
Local over Small	1978	80	Good
Local over Small Stream	1938	80	Good
FM over Creek	1968	71	Good
FM over Dry Run	1977	71	Poor
FM over W Branch Floyd River	1977	71	Good
Harrison Ave over Small Stream	2014	71	Good
Indian Ave over Small Stream	2014	71	Good
Larch Ave over Stream	2012	71	Good
Local over No Name CR	1973	71	Fair
Local over Rogg CR	1969	71	Fair
Local over Six Mile Creek	1961	71	Fair
Local over Sixmile Creek	1937	71	Good
Local over Sm Stream	1960	71	Fair
Local over Sm Stream	2005	71	Good
Local over Small	1983	71	Fair
Local over Small Stream	1936	71	Fair
Local over Small Stream	1982	71	Good
Local over Small Stream	1947	71	Fair
Local over Small Stream	1995	71	Good
Local over Small Stream	1973	71	Fair
FM over Small Stream	1986	61	Fair
Local over Sm Stream	1931	61	Good
395TH St over Floyd River	2021	60	Good
470TH St over Small	1997	60	Good
B58 over Small Stream	1996	60	Good
FM over Dry Creek	1965	60	Fair
FM over Dry Creek	1982	60	Good
FM over Orange City Slough	1992	60	Fair
FM over Small	2009	60	Good
Local over Creek	1997	60	Good
Local over Dry Creek	1938	60	Good
Local over Floyd River	1962	60	Fair
Local over No Name Creek	1982	60	Good
Local over Sm Stream	1977	60	Good
Local over Sm Stream	1997	60	Good
Local over Small	2009	60	Good
Local over Small	1978	60	Fair
Local over Small	1986	60	Good
Local over Small	1984	60	Fair
Local over Small	2004	60	Good
Local over Small Stream	1992	60	Good
Local over Small Stream	1978	60	Fair
Local over Small Stream	2003	60	Good
Local over Small Stream	1947	60	Good
Local over Small Stream	1997	60	Good
Local over Small Stream	1981	60	Fair
Local over Stream	1994	60	Good
Local over W Br Floyd River	2004	60	Good
FM over Orange City Slough	1969	51	Fair
290TH St over Stream	2015	50	Good
FM over Creek	2007	50	Good
Lily Ave over Small Stream	2013	50	Good
Local over Creek	1994	50	Good
Local over Floyd Riv	1954	50	Fair
Local over Otter Creek	1987	50	Good
Local over Six Mile Creek	1979	50	Fair
Local over Sm Stream	1933	50	Fair
Local over Small	1978	50	Good
Local over Small	1980	50	Good
Local over Small	1978	50	Fair
Local over Small	2011	50	Good
Local over Small	1974	50	Good
Local over Small Stream	1960	50	Fair
Local over Small Stream	1938	50	Good
Local over Small Stream	1954	50	Fair
Local over Small Stream	1959	50	Fair
Local over Small Stream	1991	50	Good
Local over Small Stream	1990	50	Good
Local over Small Stream	1990	50	Good
Local over Small Stream	1985	50	Good
Local over Small Stream	1984	50	Good
Local over Stream	1996	50	Good
Local over W Br Floyd River	1990	50	Good
280TH St over Small	1978	45	Fair
350TH St over Sm Stream	2013	45	Good
360TH St over Small Stream	2017	45	Good
Indian Ave over No Name Creek	2016	45	Good
Local over Creek	1962	45	Fair
Local over No Name Creek	1998	45	Good
Local over Otter Creek	1962	45	Fair
Local over Six Mile Creek	1983	45	Good
Local over Six Mile Creek	1990	45	Good
Local over Six Mile Creek	2003	45	Good
Local over Small	1979	45	Good
Local over Small	1940	45	Good
Local over Small	2003	45	Good
Local over Small	1977	45	Good
Local over Small Stream	1977	45	Good
Local over Small Stream	2001	45	Good
Local over Small Stream	2010	45	Good
Local over Small Stream	1998	45	Good
FM over Small	1983	41	Good
Lily Ave over Stream	2000	41	Fair
B 58 (470TH St) over Six Mile Creek	2012	40	Good
FM over Small	2003	40	Good
Fig Ave over Creek	2018	40	Good
Local over Dry Creek	1966	40	Fair
Local over No Name Creek	1900	40	Good
Local over Orange City Slough	1996	40	Good
Local over Six Mile Creek	1997	40	Good
Local over Sm Stream	1947	40	Good
Local over Sm Stream	1977	40	Fair
Local over Sm Stream	2002	40	Good
Local over Small	1979	40	Fair
Local over Small	2011	40	Good
Local over Small	1996	40	Good
Local over Small	1987	40	Good
Local over Small Stream	2002	40	Good
Local over Small Stream	1969	40	Fair
Local over Small Stream	2002	40	Good
Local over Small Stream	2001	40	Good
Local over Small Stream	1974	40	Fair
Local over Small Stream	1994	40	Good
Local over Small Stream	1962	40	Fair
Local over Small Stream	1938	40	Good
Local over Small Stream	1992	40	Good
Local over Small Stream	1986	40	Good
Local over Small Stream	1984	40	Good
Local over Small Stream	1988	40	Good
Local over Small Stream	1998	40	Good
Local over W Branch	1990	40	Good
Local over Small Stream	2002	35	Good
370TH St over Small Stream	2012	34	Good
B 62 over Small	2003	34	Good
FM over Creek	1985	34	Good
FM over Creek	1997	34	Good
FM over Dry Creek	2010	34	Good
FM over Small Stream	1962	34	Poor
Grant Ave over Creek	2012	34	Good
K 20 (270TH St) over No Name Creek	2013	34	Good
Local over Six Mile Creek	1964	34	Fair
Local over Sm Stream	1937	34	Good
Local over Sm Stream	1900	34	Fair
Local over Small	1978	34	Poor
Local over Small	1978	34	Fair
Local over Small	2004	34	Good
Local over Small	1941	34	Fair
Local over Small	1978	34	Good
Local over Small	1977	34	Good
Local over Small	1977	34	Good
Local over Small Stream	1936	34	Fair
Local over Small Stream	1984	34	Good
Local over Small Stream	1977	34	Fair
Local over Small Stream	1969	34	Fair
Local over Small Stream	1977	34	Good
Local over Small Stream	2011	34	Good
Local over Small Stream	2005	34	Good
Local over Small Stream	1939	34	Fair
Local over Small Stream	1977	34	Fair
Local over Small Stream	2001	34	Fair
Local over Small Stream	1977	34	Fair
Local over Small Stream	1986	34	Good
Local over West Branch Floyd River	1983	34	Fair
Local over over Aband RR	1963	34	Fair
62 over Willow Creek	1984	31	Good
Local over Small	1983	31	Good
350TH Ave over Small Creek	2013	30	Good
B62 over Small	1978	30	Good
Dove Ave over Small Stream	2015	30	Good
Jefferson Ave over Small Stream	2015	30	Good
K24 Dogwood Ave over Small Stream	2020	30	Good
K42 over Small	2005	30	Good
K42 over Small Stream	2005	30	Good
Local over Floyd River	1963	30	Fair
Local over Floyd River	1940	30	Good
Local over Small	1980	30	Good
Local over Small	1979	30	Fair
Local over Small	1979	30	Poor
Local over Small	1978	30	Fair
Local over Small	1985	30	Fair
Local over Small	1984	30	Good
Local over Small Stream	1965	30	Fair
Local over Small Stream	1938	30	Fair
Local over Small Stream	1977	30	Fair
Local over Small Stream	1988	30	Good
Local over Small Stream	1948	30	Good
Local over Small Stream	1988	30	Good
Local over Small Stream	1999	30	Good
Local over Small Stream	2007	30	Good
Local over Small Stream	2002	30	Good
Local over West Branch	1984	30	Fair
Marsh Ave over No Name Creek	2000	30	Good
Marsh Ave over Small Stream	2017	30	Good
360TH St over West Branch	2000	26	Good
B 14 over Small Stream	1990	26	Fair
Dogwood Ave over Small Stream	2022	26	Good
FM over Small Stream	1983	26	Fair
Local over Floyd River	1966	26	Fair
Local over Floyd River	2001	26	Good
Local over Six Mile Creek	1979	26	Fair
Local over Sm Stream	1977	26	Good
Local over Small	1993	26	Fair
Local over Small	2008	26	Good
Local over Small Stream	1977	26	Good
Local over Small Stream	1977	26	Good
Local over Small Stream	1938	26	Fair
Local over Small Stream	1994	26	Good
Local over West Branch	1938	26	Fair
Marsh Ave over Small	2008	26	Good
FM over No Name Creek	1992	25	Good
Local over Floyd River	1983	25	Fair
Cherry Ave over Small Stream	2000	20	Fair
FM over Creek	1949	20	Poor
Jay Ave over Small Stream	2014	20	Good
Larch Ave over Small	1954	20	Good
Larch Ave over Small Creek	2015	20	Good
Local over Floyd River	1979	20	Fair
Local over Floyd River	1979	20	Fair
Local over No Name Creek	2011	20	Good
Local over No Name Creek	1992	20	Fair
Local over No Name Creek	1977	20	Fair
Local over Six Mile Creek	1984	20	Good
Local over Sm Stream	2002	20	Good
Local over Sm Stream	1931	20	Good
Local over Sm Stream	1997	20	Good
Local over Small	2007	20	Good
Local over Small	1978	20	Good
Local over Small Stream	1937	20	Good
Local over Small Stream	1934	20	Fair
Local over Small Stream	1984	20	Good
Local over Small Stream	1940	20	Good
Local over Small Stream	1965	20	Fair
Local over Small Stream	1986	20	Good
Local over Stream	1981	20	Fair
Local over Stream	1993	20	Fair
Local over West Branch	2007	20	Good
Dove Ave over Small Stream	2021	15	Good
Local Rd over Six Mile Creek	1992	15	Good
Local over Small	1978	15	Fair
Local over Small	1941	15	Good
Local over Small	1995	15	Fair
Local over Small	1985	15	Fair
Local over Small	1986	15	Good
Local over Small Stream	2003	15	Good
Local over Small Stream	1999	15	Good
Local over Small Stream	1938	15	Fair
Local over Small Stream	1999	15	Fair
Local over Small Stream	1938	15	Good
Local over Stream	1993	15	Fair
330TH St over Unnamed Creek	2022	11	Good
350TH St over Small Stream	1938	11	Poor
Local over Dry Creek	1938	11	Fair
Local over Otter CR	1963	11	Fair
Local over Sm Stream	1994	11	Fair
Local over Small	2009	11	Good
Local over Small	1965	11	Poor
Local over Small	1960	11	Good
Local over Small Stream	1996	11	Good
Local over Small Stream	1936	11	Fair
Local over Small Stream	1954	11	Fair
Local over Small Stream	1984	11	Fair
Local over Small Stream	1934	11	Fair
Local over Small Stream	1997	11	Fair
Local over Small Stream	1998	11	Good
Local over Small Stream	1994	11	Fair
Local over Six Mile Creek	1989	5	Good
Local over Small Stream	1990	5	Good
Local over Small Stream	1963	5	Fair

Source: FHWA National Bridge Inventory, 2025.

Sioux County bridge conditions · Iowa bridges by county.

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