Hardin County, IA

211 public highway bridges

Hardin County Bridge Snapshot

Hardin County, Iowa contains 211 public highway bridges in the FHWA National Bridge Inventory. Roughly 29.9% are rated “Good,” 33.6% “Fair,” 30.3% “Poor,” and 30.3% are classified as structurally deficient — the federal designation for spans whose deck, superstructure, or substructure has been rated 4 or below on the 0–9 NBI scale. Structurally deficient does not mean unsafe to cross; it means the bridge is on the priority list for repair or replacement.

Inspections in IA are conducted by certified engineers from the state Department of Transportation on a 24-month cycle, and results are reported back to the FHWA each spring. The list below shows every NBI-tracked bridge in the county, sorted by inventory load rating. Use the “Sort by” controls to surface the lowest-rated spans first, and click any row for full inspection history, traffic counts, and condition trends.

Source: FHWA National Bridge Inventory. See methodology for full definitions.

211

Total Bridges

29.9%

Good

30.3%

Poor

30.3%

Structurally Deficient

Condition Distribution

Good

29.9% (63)

Fair

33.6% (71)

Poor

30.3% (64)

SD

30.3% (64)

All Bridges (211)

Sort:

LOCAL

Over: HONEY CREEK

086210400, Hardin, IA

Built 1987 Load: 31.7 t ADT: 340

LOCAL

Over: HONEY CREEK

087213002, Hardin, IA

Built 1981 Load: 31.7 t ADT: 34

LOCAL

Over: ELK CREEK

088192601, Hardin, IA

Built 1981 Load: 32.0 t ADT: 30

LOCAL

Over: IOWA RIVER

089220104, Hardin, IA

Built 1978 Load: 32.1 t ADT: 88

HWY 359

Over: S FORK IOWA RIVER

088221102, Hardin, IA

Built 1958 Load: 32.4 t ADT: 1,286

FM

Over: IOWA RIVER

087193303, Hardin, IA

Built 1976 Load: 32.5 t ADT: 79

LOCAL

Over: IOWA RIVER

088193113, Hardin, IA

Built 1977 Load: 32.5 t ADT: 51

FM

Over: IOWA RIVER

089193104, Hardin, IA

Built 1977 Load: 32.5 t ADT: 44

FM

Over: IOWA RIVER

089203406, Hardin, IA

Built 1979 Load: 32.5 t ADT: 79

IA 175

Over: BEAVER CREEK

0.6 MILE W OF JCT SR D41, Hardin, IA

Built 1990 Load: 32.7 t ADT: 2,210

FM

Over: CREEK

087220502, Hardin, IA

Built 1970 Load: 33.0 t ADT: 177

FM

Over: S. FORK IOWA RIVER

087193002, Hardin, IA

Built 1978 Load: 34.1 t ADT: 88

IA 57

Over: W BRANCH CEDAR RIVER

1.6 MILES WEST OF SR S56, Hardin, IA

Built 1960 Load: 34.5 t ADT: 1,900

FM

Over: CREEK

088201206, Hardin, IA

Built 1988 Load: 35.0 t ADT: 104

FM

Over: STREAM

086190518, Hardin, IA

Built 1997 Load: 35.9 t ADT: 59

FM

Over: CREEK

086191201, Hardin, IA

Built 1992 Load: 35.9 t ADT: 25

LOCAL

Over: DRAINAGE DITCH

086200603, Hardin, IA

Built 1994 Load: 35.9 t ADT: 16

LOCAL

Over: CREEK

086210501, Hardin, IA

Built 1991 Load: 36.3 t ADT: 51

LOCAL

Over: CREEK

088212502, Hardin, IA

Built 1991 Load: 36.3 t ADT: 98

LOCAL

Over: HONEY CREEK

086201606, Hardin, IA

Built 1988 Load: 37.4 t ADT: 15

LOCAL

Over: BEAR CREEK

087192402, Hardin, IA

Built 1979 Load: 37.8 t ADT: 35

FM

Over: DRAINAGE DITCH

087222002, Hardin, IA

Built 1970 Load: 38.2 t ADT: 177

LOCAL

Over: DD

088200203, Hardin, IA

Built 1988 Load: 38.6 t ADT: 30

LOCAL

Over: IOWA RIVER (SOUTH FORK)

088212806, Hardin, IA

Built 1989 Load: 38.6 t ADT: 16

LOCAL

Over: MINERVA CREEK

086221002, Hardin, IA

Built 1994 Load: 38.8 t ADT: 47

FM

Over: IOWA RIVER

086192205, Hardin, IA

Built 1981 Load: 42.1 t ADT: 1,061

LOCAL

Over: CREEK

086203501, Hardin, IA

Built 1989 Load: 43.8 t ADT: 16

IA 175

Over: HONEY CREEK

1.5 MI. W OF W JCT US 65, Hardin, IA

Built 1991 Load: 46.0 t ADT: 1,300

LOCAL

Over: DD

087220602, Hardin, IA

Built 1990 Load: 49.3 t ADT: 5

LOCAL

Over: CREEK

086210502, Hardin, IA

Built 1988 Load: 50.2 t ADT: 15

LOCAL

Over: MINERVA CREEK

086222401, Hardin, IA

Built 1989 Load: 50.2 t ADT: 20

LOCAL

Over: TIPTON CREEK

087220102, Hardin, IA

Built 1988 Load: 50.2 t ADT: 29

FM

Over: CREEK

086190602, Hardin, IA

Built 1979 Load: 55.1 t ADT: 29

LOCAL

Over: CREEK

089220103, Hardin, IA

Built 1979 Load: 55.2 t ADT: 91

US 20

Over: DRAINAGE

1.8 MILES E OF JCT. US 65, Hardin, IA

Built 2003 Load: 25.3 t ADT: 9,800

WB US 20

Over: S. FK IOWA RIVER

1.0 MILE EAST OF SR S27, Hardin, IA

Built 1990 Load: 28.0 t ADT: 4,650

LOCAL

Over: CREEK

087201104, Hardin, IA

Built 2001 Load: 28.3 t ADT: 16

LOCAL

Over: BEAR CREEK

086190304, Hardin, IA

Built 2004 Load: 29.8 t ADT: 30

LOCAL

Over: CREEK

089221702, Hardin, IA

Built 2005 Load: 29.8 t ADT: 34

LOCAL

Over: MINERVA CREEK

086221501, Hardin, IA

Built 2004 Load: 30.1 t ADT: 10

LOCAL

Over: DD

089220902, Hardin, IA

Built 2005 Load: 30.1 t ADT: 82

WB US 20

Over: OVER UP RR

1.5 MILES EAST OF SR S27, Hardin, IA

Built 1990 Load: 32.3 t ADT: 4,650

D20 HWY 941

Over: S FORK IOWA RIVER

089222003, Hardin, IA

Built 2014 Load: 32.4 t ADT: 943

S 56

Over: ELK CREEK

088192804, Hardin, IA

Built 2016 Load: 32.4 t ADT: 1,650

H AVE

Over: MINERVA CREEK

086211902, Hardin, IA

Built 2013 Load: 32.4 t ADT: 26

330TH ST

Over: MINERVA CREEK

086213301, Hardin, IA

Built 2014 Load: 32.4 t ADT: 26

F AVE

Over: MINERVA CREEK

086221402, Hardin, IA

Built 2013 Load: 32.4 t ADT: 25

S27

Over: TIPTON CREEK

087220202, Hardin, IA

Built 2021 Load: 32.4 t ADT: 285

205TH ST

Over: BEAVER CREEK

088202703, Hardin, IA

Built 2012 Load: 32.7 t ADT: 11

LOCAL

Over: SMALL STREAM

087191202, Hardin, IA

Built 1999 Load: 34.6 t ADT: 35

Read our methodology — how this data is sourced, computed, and verified.

Related

Browse all → | Rankings →

Data sourced from official U.S. government datasets. See our methodology for details. Retrieved and formatted by PlainBridges Editorial

Reviewed byPlainbridges Editorial, Plain Bridges Editorial Team · June 6, 2026