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Every bridge in Calhoun County, Iowa

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

198 inventoried bridges, busiest first

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

Calhoun County, Iowa, has 198 bridges in the 2025 National Bridge Inventory: 50 rated good, 99 fair, and 49 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 20 over East Cedar Creek	2008	7,000	Good
US 20 over Dd 9 & 13	2008	6,900	Good
US 20 over Drainage Ditch No 1 & 54	2010	5,900	Good
US 20 over W Fork Camp Creek	2010	5,900	Good
US 20 EB over Cc RR	2010	3,450	Good
US 20 WB over Cc RR	2011	3,450	Good
Ia 7 over over Cc RR	1974	2,560	Fair
US 20 EB over Ia 4	2012	2,410	Good
US 20 WB over Ia 4	2012	2,410	Good
Ia 175 over Lake Creek	1980	1,560	Fair
Ia 175 over Prairie Creek	1980	1,560	Fair
Ia 175 over Raccoon River	1980	1,560	Fair
Ia 4 & 175 over Purgatory Creek	1973	1,410	Fair
Ia 7 over Lake Creek	1989	1,250	Good
Ia 4 over E Br Lake Creek	1991	1,120	Good
Ia 4 over over Cc RR	1991	1,120	Good
FM over Crooked Creek	1982	1,067	Fair
Ia 4 & Ia 175 over Cedar Creek	1993	1,040	Fair
FM over Dd #65	1987	957	Fair
Ia 175 over Hardin Creek	1990	950	Fair
D36 270TH St over Lake Creek	2021	948	Good
Co Rd over East Cedar Creek	1920	769	Fair
US 20 over West Cedar Creek	1961	769	Fair
Woodlawn Ave over Lake Creek	1996	755	Fair
Co Rd over Drainage Ditch	1921	669	Fair
Co Rd over Drainage Ditch #31	1990	669	Fair
270TH St over Camp Creek	2005	609	Good
Old US 20 over Camp Creek	1992	609	Fair
FM over Raccoon River	1969	529	Fair
FM over Purgatory Creek	2006	469	Good
FM over Lake CR.	1978	359	Poor
Co Rd N-37 over Lake Creek	1985	354	Poor
FM over Dd 261	1963	300	Poor
Ia 4 over Reading Creek	1952	300	Fair
FM over Dd 9-13	1966	290	Poor
Local over Camp Ck	1973	279	Poor
FM over Camp Creek	1971	259	Fair
FM over Dd 198	1998	259	Fair
FM over Lizard Creek So Branch	1969	240	Fair
Co Rd over East Cedar Creek	1968	220	Poor
FM over Dd 181 Big Cedar	1938	219	Poor
FM over Dd No. 1	1964	219	Fair
FM over Dd No. 976	1938	219	Fair
FM over Dd No. 12	1990	180	Good
FM over Dd No. 12	1990	180	Good
FM over Dd No. 12	1998	180	Good
FM over E Cedar Creek	1970	180	Poor
FM over Cedar Creek	1971	150	Poor
FM over Purgatory Creek	1965	150	Fair
Local over Prarie Creek	1991	139	Good
FM over Cain Creek	1971	110	Poor
FM over Cain Creek	1968	110	Poor
FM over Racoon River	1987	110	Good
Local over Lake Creek	1992	110	Good
FM over Raccoon River	1985	90	Fair
FM over Dd 195	1969	80	Fair
FM over Cedar Creek	1970	71	Poor
FM over Camp CR Trib.	1994	60	Good
FM over Cedar Creek	1972	60	Poor
Harris Ave over Camp Creek	2014	60	Good
Local over Dd No 12	1976	60	Fair
Local over Drainage Ditch 125	1900	60	Fair
Local over Lake Ck	1931	60	Poor
P13 Valley Ave over Dd #83	1917	60	Poor
FM over Prarie Creek	1993	50	Good
Local over D.d. No 12	1972	50	Fair
Local over Dd 12&22	1983	50	Fair
Local over Lake Creek	1995	50	Good
FM over Calhoun Co Dd	1976	45	Poor
FM over Camp Creek	1992	45	Good
FM over Cedar Creek	1995	45	Good
FM over Drainage Ditch(lake CR)	1986	45	Fair
Local over DD#6	1974	45	Fair
Local over Dd 67	1976	45	Fair
Local over Dd No 12	1973	45	Fair
Local over Lake CR	1955	45	Fair
FM over Dd No. 46	2004	40	Good
FM over Purgatory Creek	1992	40	Good
Local over Cedar Creek	1994	40	Good
Local over D.d. No 20	1900	40	Poor
Local over Dd 9-13	1900	40	Poor
Local over Hardin Creek	1994	40	Good
Local over Lizard Creek	1991	40	Good
380TH St over Stream	2021	34	Good
FM over Cedar Creek	1938	34	Poor
FM over Purgatory	1938	34	Fair
Local Rd over D.d. No 31	1974	34	Fair
Local over D.d. No 20	1972	34	Fair
Local over D.d. No 31	1974	34	Fair
Local over Dd 12	1973	34	Fair
Local over Dd 9-13	1979	34	Fair
Local over East Cedar Creek	2003	34	Good
Local over Lake CR	1964	34	Fair
Local over Lake Creek	1985	34	Fair
Local over Prairie Creek 319	2007	34	Good
Local over Purgatory CR.	1900	34	Poor
D68 390TH St over Boone Creek	2020	30	Good
FM over Dd	1973	30	Poor
Local over Co Drain #1-54	1984	30	Fair
Local over D D 92	1989	30	Fair
Local over D D No 2	1980	30	Fair
Local over Dd No 83	1900	30	Poor
Local over E Cedar Creek	1966	30	Fair
Local over E.cedar CR.	1978	30	Fair
Local over Prairie Creek	1980	30	Poor
Local over Stream	1978	30	Fair
180TH St over Dd 88	1900	26	Poor
FM over D D 1-54	1994	26	Good
FM over D.d. 95	1976	26	Fair
FM over D.d. 95	1974	26	Fair
FM over Dd 13	1972	26	Fair
FM over Dd 67	1976	26	Fair
FM over Drainage	1975	26	Poor
FM over East Cedar Creek	1996	26	Good
FM over Hardin Creek	1973	26	Fair
FM over Hardin Creek	1972	26	Fair
FM over Hardin Creek	2003	26	Good
FM over Purgatory Creek	1955	26	Fair
Local over Camp Creek	2006	26	Good
Local over D D 181	1979	26	Fair
Local over Dd 1-54	1900	26	Poor
Local over Dd 12	1974	26	Poor
Local over Dd 2	1975	26	Poor
Local over Dd 20	1948	26	Poor
Local over Dd 37	1960	26	Poor
Local over Dd 67	1976	26	Fair
Local over Lake Creek	1967	26	Fair
Local over Lake Creek	1955	26	Fair
Local over N Fork Camp CR	1900	26	Poor
Local over W.cedar CR.	1978	26	Fair
340TH St over Stream	2023	20	Good
FM over Dd #1-54	1982	20	Fair
FM over Dd 9-13	1973	20	Fair
FM over Dd No. 1	1993	20	Good
FM over E.cedar CR.	1938	20	Poor
FM over Lake Creek	1967	20	Fair
Local over Big Cedar CR D D 181	1921	20	Fair
Local over Branch 976 on Dd 181	1982	20	Fair
Local over Camp CR.	1900	20	Poor
Local over Camp Creek	1990	20	Fair
Local over Camp Creek	1980	20	Good
Local over Camp Creek	1986	20	Good
Local over D.d.	1900	20	Poor
Local over Dd #1 & 54	1987	20	Fair
Local over Dd #31	1983	20	Fair
Local over Dd 13	1974	20	Poor
Local over Dd 65	1929	20	Poor
Local over Dd 9-13	1973	20	Fair
Local over Dd No. 12	1971	20	Fair
Local over Drainage Ditch 1-54	1985	20	Fair
Local over Lake Creek	1990	20	Good
Local over Lake Creek	1917	20	Poor
Local over South Branch Lizard	1957	20	Poor
Local over Welsh Slough	1974	20	Fair
FM over Dd No 20	1981	15	Good
FM over Dd No. 83	1972	15	Fair
FM over Harding Creek	1976	15	Fair
FM over W.cedar CR.	1979	15	Fair
Inwood over Dredge Ditch	2000	15	Good
Local over Big Cedar CR D D 181	1961	15	Fair
Local over Big Cedar CR Dd 181	1900	15	Poor
Local over Camp CR	1970	15	Fair
Local over Camp Creek	1974	15	Fair
Local over Cedar Creek	1995	15	Good
Local over D.d.	1957	15	Poor
Local over D.d. 95	1981	15	Fair
Local over D.d. No 83	1900	15	Poor
Local over Dd No 1	1974	15	Good
Local over Dd. No 31	1971	15	Poor
Local over Drainage Ditch	1974	15	Fair
Local over Drainage Ditch #67	1983	15	Fair
Local over Drainage Ditch 1-54	1982	15	Fair
Local over E Cedar CR.	1980	15	Poor
Local over Hardin Creek	1987	15	Fair
Local over Hardin Creek DD#95	1982	15	Fair
Local over Lake CR.	1965	15	Fair
Local over Stream	1939	15	Fair
FM over Dd 82	1938	11	Poor
FM over E Cedar Creek	1956	11	Fair
Local over Camp Creek	1974	11	Fair
Local over Cedar Creek	1980	11	Fair
Local over County Drain #31	1984	11	Fair
Local over D D 67	1971	11	Fair
Local over D.d.	1977	11	Fair
Local over DD#81	1986	11	Good
Local over Drainage Ditch 9-13	1983	11	Fair
Local over Harding Creek	1984	11	Fair
Local over Lake Creek	1974	11	Fair
Local over Lake Creek W Br	1900	11	Poor
Local over Purgatory CR.	1971	11	Poor
Local over Purgatory Creek	1985	11	Fair
FM over Dd 67	1972	5	Fair
FM over West Cedar	1955	5	Fair
Local over Drainage Ditch	1974	5	Poor
Local over E. Cedar CR	1981	5	Fair
Local over Purgatory Creek	1990	5	Good
Local over Stream	1900	5	Poor
Local over W Cedar CR.	1900	5	Poor

Source: FHWA National Bridge Inventory, 2025.

Calhoun County bridge conditions · Iowa bridges by county.

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