Home › Iowa › Hancock County › All bridges

Every bridge in Hancock County, Iowa

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

135 inventoried bridges, busiest first

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

Hancock County, Iowa, has 135 bridges in the 2025 National Bridge Inventory: 55 rated good, 53 fair, and 27 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 18 over E Branch Iowa River	2002	6,500	Good
US 18 over Drainage Ditch	1958	5,200	Fair
US 18 over West Fork Iowa River	1958	5,200	Fair
B-14 over Private Dr	1972	3,502	Fair
US 18 over Boone River	1959	2,980	Fair
US 18 over Branch Boone River	1959	2,980	Fair
US 69 over E Branch Iowa River	2018	2,470	Fair
US 69 over Drainage Ditch	1930	2,450	Fair
US 69 over Galls Creek	1930	2,450	Poor
FM 1870 330TH over Winnebago River	1963	2,192	Poor
US 69 over E Branch Iowa River	2015	1,650	Good
US 69 over Iowa River Overflow	1922	1,650	Fair
Ia 17 over Prairie Creek	1991	1,250	Good
R-35 FM over West Otter Creek	1938	1,127	Fair
B36 (225TH St) over Drainage Ditch 5	2013	851	Good
FM 2430 James over W Branch Iowa River	1948	828	Poor
Taft Ave over Dd #13	1974	709	Fair
FM 2030 170TH over Drainage Ditch #9	1975	688	Fair
1840 170TH St over E Br Iowa River	1975	649	Fair
1350 170TH St over West Iowa River	1979	569	Poor
FM 640 120TH St over Mid Br Boone River	1988	518	Fair
FM 780 120TH St over E. Br Boone River	1980	518	Fair
B-63 over West Otter Creek Dd 26	2007	498	Good
FM 1400 310TH over Drainage Ditch 1&2	1974	478	Fair
FM 640 225TH St over Boone River	1986	467	Fair
FM 2380 Deer Av over Drainage Ditch 97	1968	447	Poor
FM 570 120TH St over Boone River	1979	439	Fair
FM 1440 110TH over West Branch Ia River	1976	429	Fair
1780 200TH St over East Iowa River	2007	399	Good
FM 1980 110TH over East Iowa River	1957	399	Good
FM 100 160TH St over Boone River	1948	330	Fair
225TH St over Drainage Ditch 97	2022	315	Good
B55 160TH St over Dd #8	2017	300	Good
1550 210TH St over Drainage Ditch 6	1968	259	Poor
1860 210TH St over East Iowa River	1967	259	Poor
FM 2030 Vail over Golls Creek	1969	259	Poor
Loc 1620 Taft over Drainage Ditch 9	2010	235	Good
FM 2080 Sioux over Golls Creek	1991	230	Good
FM 2090 260 St over Drainage Ditch #13	1976	230	Fair
FM 2160 Sioux over D.D.#5	1987	230	Good
FM 1920 260 St over East Iowa River	1964	210	Fair
FM 3170 Valley over Winnebago River	1974	190	Fair
1200 210TH St over West Iowa River	1961	170	Poor
3220 Reed Ave over Silver Creek Dd 7	2005	153	Good
950 110TH St over West Otter Creek Dd 26	1997	134	Good
FM over East Iowa River	1975	133	Fair
FM 220 290TH St over Plum Creek	2007	131	Good
FM 2040 Echo Av over Boone River	1985	110	Fair
FM 1870 225 St over East Iowa River	1972	90	Fair
FM 3150 Taylor over Winnebago River	1992	90	Good
2260 305TH St over Winnebago River	1974	82	Fair
1110 220TH St over W.br. Iowa River	1993	81	Good
1190 220TH St over Dd #1 & 2	1973	81	Fair
1280 320TH St over Dd 1&2	1956	63	Fair
210TH St over Golls Creek	2012	62	Fair
Loc 2030 210TH over Golls Creek	1955	62	Poor
2240 Crane Ave over Dd 10	1976	51	Fair
2870 Birch Ave over Plum Creek	1975	51	Poor
1770 190TH St over East Branch Ia River	1993	50	Good
190 150TH St over Boone River	1989	50	Good
2460 Sioux Ave over Dd #13	1976	50	Good
B62 over West Iowa River	2013	50	Good
Local over East Br Boone River	1983	50	Good
3330 Ames Ave over Buffalo Creek	1985	47	Fair
1480 Taft Ave over East Iowa River	2005	46	Good
FM 1320 290TH over Drainage Ditch 1&2	1983	46	Fair
110TH St over E Br Boone River	2020	45	Good
B-62 over W Otter Creek Dd 26	1959	42	Fair
1020 Quail Ave over West Branch Ia River	2010	41	Good
1390 120TH St over West Branch Iowa River	1984	41	Good
150TH St over Dd #8	2012	41	Good
1995 150TH St over East Iowa River	2005	41	Good
720 130TH St over Dd #159	1958	41	Fair
950 150TH St over West Otter Creek Dd 26	1976	41	Fair
R16 Birch Ave over Buffalo Creek	2015	41	Good
490 130TH St over Boone River	1979	40	Fair
140TH St over West Branch Ia River	2016	36	Good
1870 Crane Ave over Boone River	1925	36	Poor
1060 Palm Ave over West Branch Ia River	2007	35	Good
1740 Rake Ave over East Branch Ia River	1985	35	Fair
620 110TH St over Mid Br Boone River	2008	35	Good
1320 150TH St over West Iowa River	1956	31	Fair
3180 Maple Ave over Dd 1&2	1958	31	Fair
1250 160TH St over West Iowa River	1977	30	Fair
1430 Iowa Ave over D.D.#159	1984	30	Good
Loc 1220 270 St over Dd 1 & 2	2007	30	Good
1240 Union Ave over East Iowa River	1979	26	Good
1270 200TH St over West Branch Ia River	2011	26	Good
1290 190TH St over West Iowa River	1957	26	Poor
1940 Deer Ave over Boone River	1967	26	Poor
200TH St over Boone River	2014	26	Good
250TH St over Dd #1&2	2018	26	Good
610 220TH St over Boone River	1978	26	Good
840 190TH St over Br.boone River #8	1980	26	Fair
FM 1220 260 St over Drainage Ditch 1&2	1973	26	Fair
FM 1640 290TH over East Branch Iowa River	1982	26	Fair
FM 830 260 St over West Iowa River	1956	26	Poor
Loc 2100 Union over Golls Creek	1987	26	Good
1340 180TH St over West Iowa River	2005	21	Good
1370 Union Ave over East Iowa River	1983	21	Good
150TH St over Dd # 159	2000	21	Good
180TH St over Drainage Ditch #10	1994	21	Poor
1840 280TH St over East Branch Ia River	1976	21	Fair
1840 Quail Ave over Dd #6	1970	21	Poor
410 140TH St over Boone River	1927	21	Poor
820 180TH St over Br. Boone River #8	1981	21	Fair
930 140TH St over West Otter Creek Dd 26	1975	21	Fair
Loc 2240 200TH over Golls Creek	2007	21	Good
Loc 2280 200TH over Golls Creek	2007	21	Good
Loc 2340 200TH over Golls Creek	2011	21	Good
1290 Echo Ave over Boone River	1969	20	Poor
FM 1930 Yale over Golls Creek	2010	20	Good
FM 330 190TH St over Boone River	1925	20	Poor
100 Crane Ave over Drainage Ditch 61	1975	15	Fair
1030 Grant Ave over E Br Boone River	2007	15	Good
110TH St over Boone River	2002	15	Good
170TH St over Boone River	2021	15	Good
1760 180TH St over East Iowa River	1959	15	Poor
1780 Hill Ave over Trib Boone River #8	1957	15	Poor
1970 Crane Ave over Dd #10	1969	15	Poor
2740 Urban Ave over Dd #13	1969	15	Poor
2830 Sage Ave over Ia River East Branch	1985	15	Fair
600 140TH St over Dd #8	1955	15	Fair
730 170TH St over Dd #8	1983	15	Fair
760 140TH St over Branch Boone Rvr Dd 159	1985	15	Good
780 170TH St over Br Boone River #8	1978	15	Fair
Crane Ave over Boone River	2012	15	Good
Loc 910 250 St over West Br Iowa River	2006	15	Good
1380 300TH St over Dd 1&2	1956	11	Fair
1450 Deer Ave over Boone River	1968	11	Poor
160 280TH St over Plum Creek	1977	11	Fair
190TH St over Golls Creek DD177	2021	11	Good
2680 270TH St over East Branch Ia River	1958	11	Poor
300 210TH St over Dd #10	1958	11	Poor
130TH St over Mid Br Boone River Dd 8	2020	10	Good

Source: FHWA National Bridge Inventory, 2025.

Hancock County bridge conditions · Iowa bridges by county.

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