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Every bridge in Grundy County, Iowa

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

288 inventoried bridges, busiest first

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

Grundy County, Iowa, has 288 bridges in the 2025 National Bridge Inventory: 120 rated good, 91 fair, and 77 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 Stream	1999	14,500	Good
US 20 over Stream	1999	13,500	Good
US 20 over Stream	1999	8,800	Good
US 20 EB over Grundy Rd	2000	6,800	Good
US 20 WB over Grundy Rd	2000	6,800	Good
US 20 WB over Stream	2000	6,800	Good
US 20 EB over Stream	2000	6,750	Good
US 20 EB over Local Stream	1999	6,500	Good
US 20 EB over SR T55	2000	6,500	Good
WB US 20 over Local Stream	2000	6,500	Good
WB US 20 over SR T55	2000	6,500	Good
US 20 EB over H Avenue	2003	5,000	Good
US 20 WB over H Avenue	2003	5,000	Good
US 20 EB over S Beaver Creek	2003	4,900	Good
US 20 WB over S Beaver Creek	2003	4,900	Good
Ia 14 over N. Blackhawk Creek	2006	4,770	Good
US 20 EB over South Beaver Creek	2003	4,550	Good
US 20 EB over T 19	2003	4,550	Fair
US 20 WB over SR T19	2003	4,550	Good
US 20 WB over South Beaver Creek	2003	4,550	Good
US 20 EB over Ia 14	2000	4,400	Fair
US 20 WB over Ia 14	2000	4,400	Good
Ia 14 over Black Hawk Creek	1931	3,230	Poor
Ia 14 over Wolf Creek	1921	2,850	Fair
Ia 57 over Hammers Creek	1986	2,580	Good
Ia 175 over Branch Blackhawk Creek	1977	2,120	Fair
T-19 over Drainage	2003	2,082	Good
Center St (D67) over Wolf Creek	1978	1,968	Fair
FM over Blackhawk Creek	1971	1,935	Poor
Ia 175 over Mosquito Creek	1977	1,850	Good
Ia 57 over Drainage Ditch	1900	1,800	Fair
Washington St over Small Natural Stream	1969	1,528	Fair
FM over Wolf Creek	1982	1,493	Fair
First St over Blackhawk Creek	1977	1,429	Poor
First St over Blackhawk Creek	1977	1,429	Poor
FM over Black Hawk Creek	1974	1,404	Fair
FM over Wolf Creek Branch	1975	1,394	Poor
Ia 175 over Minnehaha Creek	1977	1,290	Fair
Ia 175 over Local Stream	2019	1,270	Good
Ia 175 over Munns Creek	1917	1,270	Fair
Lincoln St over Blackhawk Creek	2014	1,176	Good
F Ave over Small Natural Stream	1969	1,169	Fair
F Ave over Small Natural Stream	1969	1,169	Fair
Ia 175 over Stream	1962	1,110	Fair
FM over Br Blackhawk Ck	1977	1,051	Fair
FM over Middle Fork Beaver Creek	1978	953	Fair
FM over South Fork Beaver Creek	1980	953	Fair
D35 215TH St over Blackhawk Creek Branch	2021	903	Good
SR D35 over Black Hawk Creek	2011	903	Good
T13 D Ave over Waterway	2015	805	Good
D19 160TH St over Br N Blackhawk Creek	1985	786	Fair
D19 160TH St over Trib Blackhawk Creek	1984	786	Fair
FM over Br N Blackhawk Creek	2004	786	Good
FM over Creek	1966	707	Poor
FM over Black Hawk Creek	1979	687	Poor
FM over Munns Creek	1994	628	Fair
T47 Q Ave over Mosquito Creek	2022	628	Good
Main St over Wolf Creek	1999	625	Fair
FM over Branch Beaver Creek	1968	619	Poor
FM over Blackhawk Creek	1967	579	Poor
FM over Blackhawk Creek Branch	1966	579	Fair
FM over Blackhawk Creek Branch	1966	579	Fair
D 19 160TH St over Small Stream	1984	560	Fair
FM over Blackhawk Creek Branch	1964	550	Fair
FM over Branch Bear Creek	1967	520	Fair
FM over Branch Bear Creek	1966	520	Fair
FM over Beaver Creek	1973	501	Poor
FM over Branch Beaver Creek	1970	501	Fair
FM over Mosquito Creek	1977	501	Poor
205TH St over Drainage Ditch	1955	491	Fair
FM over Dowd Creek	1972	491	Poor
FM over Drainage Ditch	1955	491	Fair
205TH St over Blackhawk Creek	1993	452	Fair
FM over Beaver Creek North Fork	1989	452	Fair
S75 B Ave over Branch of Bear Creek	1966	442	Fair
FM over Black Hawk Creek	1973	412	Poor
FM over Branch Black Hawk Creek	1973	412	Poor
FM over Branch Beaver Creek	1966	393	Poor
FM over Beaver Creek North Fork	1990	373	Fair
FM over Wolf Creek Branch	1972	373	Poor
FM over Black Hawk Creek	1900	354	Fair
US 20 EB Off Ramp over South Beaver Creek	2003	350	Good
US 20 WB on Ramp over Beaver Creek	2003	340	Good
FM over Fork of Minnehaha Creek	1986	324	Fair
FM over Wolf Creek Branch	1972	285	Poor
FM over Blackhawk Creek Branch	1965	275	Poor
EB US 20 Ramp B over Stream	2000	270	Good
FM over Beaver Creek	1974	265	Fair
FM over Beaver Creek Branch	1932	265	Poor
FM over Br.blackhawk Creek	1986	255	Good
FM over Fork Wolf Creek	1983	246	Good
FM over Blackhawk Creek Branch	1996	226	Good
Nickel Ave over Munns Creek	1955	216	Poor
Local over Blackhawk Creek	1976	196	Good
FM over Dowd Creek Branch	1965	187	Fair
FM over Dowd Creek Branch	1966	187	Poor
FM over Wolf Creek	1966	187	Poor
FM over Blackhawk Creek Branch	1956	177	Poor
FM over Blackhawk Creek Branch	1956	177	Poor
FM over Blackhawk Creek Branch	1988	128	Good
FM over Black Hawk Creek	1998	108	Good
FM over Fork Beaver Creek	2004	108	Good
Local Road over Branch Beaver Creek	1975	100	Poor
Local Road over Middle Fork Beaver Creek	1952	99	Poor
FM over Bear Creek Branch	1964	98	Fair
FM over Branch Bear Creek	1964	98	Fair
FM over Dowd Creek	1964	98	Poor
FM over Wolf Creek	1964	98	Fair
Local over Br Beaver Creek	2001	97	Good
Local over Br Beaver Creek	1996	97	Good
Local over Stream	1977	97	Fair
Local over Br Blackhawk Creek	1978	88	Fair
FM over Beaver Creek	1972	79	Fair
FM over Beaver Creek Branch	1954	79	Poor
FM over Beaver Creek Branch	1954	79	Fair
FM over Beaver Creek Branch	1971	79	Fair
FM over Black Hawk	1981	79	Fair
FM over Branch of Iowa River	1987	79	Fair
T37 M Ave over Wolf Creek	2019	79	Good
Local Road over Branch River Creek	1955	78	Fair
Local over Branch Beaver Creek	1956	78	Fair
Local over Small Stream	1999	78	Good
Local over South Fork of Beaver Ck	1984	78	Good
Local over Branch of Blackhawk Crk	1976	71	Poor
175TH St over Branch Black Hawk Creek	2015	70	Good
Local Road over Blackhawk Creek	1977	70	Fair
Local Road over Branch Beaver Creek	1991	70	Good
Local Road over Wolf Creek	1978	70	Good
Local over Black Hawk Creek	1977	70	Poor
Local over Blackhawk Creek Branch	1977	70	Good
Local over Branch Beaver Creek	1988	70	Fair
Local over Hammers Creek	2009	70	Good
D Avenue over US 20	2003	69	Good
FM over Beaver Creek Branch	1970	69	Fair
FM over Br Wolf Creek	1977	69	Fair
FM over Small Stream	1999	69	Good
Local over Branch Black Hawk Creek	1994	69	Fair
T47 (q Ave) over US 20	1999	69	Good
165TH Street over Br Beaver Creek	2003	59	Good
B Avenue over US 20	2003	59	Good
FM over Wolf Creek Branch	1989	59	Fair
Local Road over Branch Blackhawk Creek	1966	59	Fair
Local Road over Branch of Wolf Creek	1976	59	Poor
Local Road over Middle Fork Beaver Creek	2006	59	Good
Local Road over Rk Beaver Creek	2002	59	Good
Local Road over Wolf Creek	2001	59	Good
Local over Black Hawk Creek	1946	59	Poor
Local over Black Hawk Creek	1986	59	Good
Local over Br Blackhawk Creek	1979	59	Fair
Local over Dowd Creek	1955	59	Poor
Local over Phelps Creek	1987	59	Fair
R Ave over Branch Black Hawk Creek	2000	59	Good
R Ave over Munns Creek	2016	59	Good
Vista Ave over US 20	1999	59	Good
X Avenue over US 20	1999	59	Good
R Ave over Branch of Blackhawk Crk	1976	50	Poor
E Ave over South Fork Beaver Creek	2012	49	Good
I Ave over Black Hawk Creek	2021	49	Good
J Avenue over US 20	2003	49	Good
Local Rd over Br Black Hawk Creek	2002	49	Good
Local Road over Branch Bear Creek	1955	49	Fair
Local Road over Branch Black Hawk Creek	1990	49	Good
Local Road over Branch Black Hawk Creek	2006	49	Good
Local Road over Branch Blackhawk Crk	1976	49	Poor
Local Road over Dowd Creek	1978	49	Fair
Local over Blackhawk Creek Branch	2004	49	Good
Local over Br Blackhawk Creek	1979	49	Fair
Local over Branch Blackhawk Creek	1988	49	Fair
Local over Fork of Dowd Creek	1985	49	Fair
Local over Wolf Creek	1978	49	Poor
Local over Wolf Creek	1975	49	Fair
160TH St over South Fork Beaver Creek	2022	44	Good
180TH St over Black Hawk Creek	2015	44	Good
D55 (290TH St) over Branch Wolf Creek	2013	44	Good
FM over Mosquito Creek	1981	44	Good
H Ave over Wolf Creek	2018	44	Good
Local Road over Branch Black Hawk Creek	1973	44	Poor
Local Road over Branch of Wolf Creek	1977	44	Poor
Local Road over Branch of Wolf Creek	1977	44	Poor
Local Road over South Fork Beaver Creek	1948	44	Poor
Local over Blackhawk Creek	1957	44	Fair
Local over Blackhawk Creek	1995	44	Good
Local over Br Beaver Creek	1978	44	Poor
Local over Branch Beaver Creek	1957	44	Fair
Local over Branch Wolf Creek	1915	44	Poor
Local over Creek	1978	44	Fair
Local over Fk of Blackhawk Creek	1997	44	Fair
Local over Fork of Beaver Creek	1984	44	Fair
Local over Branch of Beaver Creek	1953	40	Poor
B Ave over Cedar Creek	2020	39	Good
B Avenue over Trib to Beaver Creek	2006	39	Good
FM over Branch Beaver Creek	1971	39	Fair
FM over Mosquito Creek	1983	39	Good
G Ave over S Fork of Beaver Creek	2017	39	Good
K Ave over Black Hawk Creek	2016	39	Good
Local Rd over South Fork Beaver Creek	1977	39	Poor
Local Road over Middle Fork Beaver Creek	1948	39	Poor
Local Road over North Fork Beaver	1981	39	Poor
Local over Branch Bear Creek	1954	39	Fair
Local over Branch Beaver Creek	1992	39	Good
Local over Dowd Creek	1990	39	Fair
Local over Fork of Beaver Creek	1985	39	Good
R Ave over N Fork Black Hawk Creek	2022	39	Good
FM over Branch Blackhawk Creek	1988	34	Fair
FM over Hammers Creek	1981	34	Fair
230TH St over Black Hawk Creek	2012	33	Good
L Ave over Black Hawk Creek	2022	33	Good
Local Rd over Branch Blackhawk Creek	1966	33	Fair
Local Road over Beaver Creek	2003	33	Good
Local Road over Branch Black Hawk Creek	1971	33	Poor
Local Road over Creek	1981	33	Poor
Local over Black Hawk Creek	1991	33	Fair
Local over Branch Blackhawk Creek	1955	33	Poor
Local over Branch Blackhawk Creek	1988	33	Fair
Local over Creek	2003	33	Good
Local over Little Wolf Creek	1976	33	Poor
Local over Mosquito Creek	1983	33	Poor
Local over South Fork Beaver Creek	1985	33	Good
T-53 (S Ave) over US 20	1999	33	Good
Local Road over Branch Black Hawk Creek	1977	30	Poor
Local over Branch Wolf Creek	1956	30	Poor
120TH St over N Fork Beaver Creek	2016	29	Good
250TH St over Black Hawk Creek	2016	29	Good
FM over Black Hawk Creek	1984	29	Fair
FM over Branch of Little Wolf CR	1987	29	Good
FM over Dowd Creek	1956	29	Fair
FM over Dowd Creek	1998	29	Good
H Ave over Branch Wolf Creek	2018	29	Good
Local Rd over Black Hawk Creek	2007	29	Good
Local Rd over Branch Blackhawk Creek	1957	29	Poor
Local Road over Branch Black Hawk Creek	1971	29	Poor
Local Road over Branch of Hammers Creek	1999	29	Good
Local Road over Branch of Hammers Creek	2007	29	Good
Local Road over Creek	1974	29	Poor
Local Road over Munns Creek	1971	29	Poor
Local over Blackhawk Creek	2002	29	Good
Local over Br Hammers Creek	2002	29	Good
Local over Branch Beaver Creek	1971	29	Poor
Luitjens Lane over Fork of Blackhawk Creek	1999	27	Good
300TH St over Wolf Creek	2020	26	Good
C Ave over Branch Beaver Creek	2011	26	Good
L Avenue over US 20	2003	26	Good
Local Rd over Branch Black Hawk Creek	1963	26	Poor
Local Rd over Branch Blackhawk Creek	1971	26	Poor
Local Road over Branch Black Hawk Creek	1971	26	Poor
Local Road over Munns Creek	1956	26	Fair
Local over Blackhawk Creek	1957	26	Fair
Local over Branch Blackhawk Creek	1957	26	Fair
Local over Branch of Beaver Creek	1991	26	Good
Local over Branch of Blackhawk Ck	1987	26	Good
Local over Fork of Blackhawk Creek	1984	26	Good
X Ave over Branch Blackhawk Creek	2018	26	Good
120TH St over Middle Fork Beaver Creek	2019	20	Good
260TH St over Dowd Creek	2013	20	Good
County Road over Branch Beaver Creek	1998	20	Good
FM over Beaver Creek South Fork	1956	20	Fair
FM over Black Hawk Creek	2010	20	Good
FM over Blackhawk Creek Branch	1989	20	Good
Local Road over Beaver Creek	1978	20	Poor
Local Road over Black Hawk Creek	1979	20	Poor
Local Road over Middle Fork of Beaver CR	1976	20	Poor
Local over Black Hawk Creek	1983	20	Fair
Local over Branch Beaver Creek	1955	20	Fair
Local over Branch Blackhawk Creek	1956	20	Fair
Local over Fk of Beaver Creek	1995	20	Good
Local over Munns Creek	1957	20	Poor
A Ave over Branch Beaver Creek	2012	15	Good
Local Rd over Branch Blackhawk Creek	1956	15	Poor
Local Road over Branch of Wolf Creek	1953	15	Poor
Local Road over Creek	1977	15	Poor
Local Road over Dowd Creek	1977	15	Poor
Local Road over Middle Fork Beaver Creek	1957	15	Fair
Local Road over N Fork of Beaver Creek	1947	15	Poor
Local over Br Beaver Creek	1979	15	Poor
Local over Branch Beaver Creek	1955	15	Fair
Local over Branch Blackhawk Creek	1991	15	Good
250TH St over Munns Creek	2006	11	Good
King Ave over Branch Wolf Creek	2000	11	Good
Local Rd over Black Hawk Creek	1971	11	Poor
Local Road over Beaver Creek	1948	11	Poor
Local Road over Branch of Wolf Creek	1976	11	Poor
Local Road over Wolf Creek	1970	11	Poor
Local Road over Wolf X Creek	1957	11	Fair
Local over Branch of Blackhawk Crk	1987	11	Good
Local over Small	1978	11	Poor
C Ave over Stream	2014	5	Good
Local over Branch Wolf Creek	1914	5	Poor
Local over Middle Fork Beaver Creek	1978	5	Fair

Source: FHWA National Bridge Inventory, 2025.

Grundy County bridge conditions · Iowa bridges by county.

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