Iowa County, IA

189 public highway bridges

Iowa County Bridge Snapshot

Iowa County, Iowa contains 189 public highway bridges in the FHWA National Bridge Inventory. Roughly 36.5% are rated “Good,” 39.7% “Fair,” 21.2% “Poor,” and 21.2% 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.

189

Total Bridges

36.5%

Good

21.2%

Poor

21.2%

Structurally Deficient

Condition Distribution

Good

36.5% (69)

Fair

39.7% (75)

Poor

21.2% (40)

SD

21.2% (40)

All Bridges (189)

Sort:

LOCAL

Over: MIDDLE FK ENGLISH RIVER

078121702, Iowa, IA

Built 1992 Load: 32.7 t ADT: 40

LOCAL

Over: STREAM

078122001, Iowa, IA

Built 1975 Load: 32.7 t ADT: 50

LOCAL

Over: MIDDLE ENGLISH RIVER

078122102, Iowa, IA

Built 1983 Load: 32.7 t ADT: 34

FM

Over: GRITTER CREEK

078123402, Iowa, IA

Built 1981 Load: 32.7 t ADT: 310

FM

Over: BR OLD MAN'S CREEK

079093004, Iowa, IA

Built 1977 Load: 32.7 t ADT: 15

LOCAL

Over: DRAINAGE DITCH

079102802, Iowa, IA

Built 1974 Load: 32.7 t ADT: 11

FM

Over: COON CREEK

081111202, Iowa, IA

Built 1986 Load: 32.7 t ADT: 1,230

LOCAL

Over: SMALL STREAM

081121906, Iowa, IA

Built 2001 Load: 32.7 t ADT: 26

LOCAL

Over: SMALL STREAM

079092202, Iowa, IA

Built 1991 Load: 32.7 t ADT: 15

INDUSTRIAL PARK

Over: GAILS CREEK

Industrial Park Dr., Iowa, IA

Built 1998 Load: 32.7 t ADT: 201

I-80

Over: NO NAME CREEK

2.4 mi. W of Jct. IA 149, Iowa, IA

Built 1963 Load: 32.7 t ADT: 30,800

LOCAL

Over: DRAINAGE

081090702, Iowa, IA

Built 1976 Load: 33.4 t ADT: 30

US 151

Over: CLEAR CREEK

1.9 MI. N OF JCT. I 80, Iowa, IA

Built 1984 Load: 33.4 t ADT: 1,510

FM

Over: DEVILS RUN

079112906, Iowa, IA

Built 1975 Load: 33.6 t ADT: 320

FM

Over: HOG RUN

079111206, Iowa, IA

Built 1975 Load: 33.6 t ADT: 120

F20 220TH TRL

Over: PRICE CREEK

081092609, Iowa, IA

Built 1978 Load: 35.0 t ADT: 450

LOCAL

Over: SMALL STREAM

080092202, Iowa, IA

Built 1985 Load: 39.2 t ADT: 50

FM

Over: BIG BEAR CREEK

080110706, Iowa, IA

Built 1995 Load: 39.5 t ADT: 540

SW RAMP

Over: LITTLE BEAR CREEK

0.1 MI. W OF Jct. SR V38, Iowa, IA

Built 1963 Load: 41.1 t ADT: 160

NE RAMP

Over: LITTLE BEAR CREEK

175 ft. E of Jct. SR V38, Iowa, IA

Built 1963 Load: 42.3 t ADT: 390

US 151

Over: BRANCH CLEAR CREEK

2.6 MI. S OF S JCT. US 6, Iowa, IA

Built 1984 Load: 42.8 t ADT: 1,510

FM

Over: OLD MANS CREEK

079100608, Iowa, IA

Built 1999 Load: 48.2 t ADT: 2,760

FM

Over: COON CREEK

081111305, Iowa, IA

Built 1997 Load: 50.0 t ADT: 1,490

LOCAL

Over: PRICE CREEK

081092203, Iowa, IA

Built 1989 Load: 50.0 t ADT: 50

FM

Over: GRITTER CREEK

078113204, Iowa, IA

Built 1988 Load: 52.9 t ADT: 60

LOCAL

Over: DRAINAGE DITCH

079101407, Iowa, IA

Built 1984 Load: 53.8 t ADT: 45

LOCAL RD

Over: PRICE CREEK

081100304, Iowa, IA

Built 1979 Load: 54.1 t ADT: 50

IA 149

Over: ENGLISH CREEK

0.2 mi. S of Jct. SR F67, Iowa, IA

Built 1987 Load: 58.3 t ADT: 1,840

FM

Over: SMALL

079120901, Iowa, IA

Built 1975 Load: 61.6 t ADT: 100

FM

Over: BR NORTH ENGLISH RIVER

079113303, Iowa, IA

Built 1976 Load: 63.0 t ADT: 40

I AVE

Over: DEVILS RUN

079112802, Iowa, IA

Built 2015 Load: 5.1 t ADT: 20

LOCAL

Over: PRICE CREEK

081100302, Iowa, IA

Built 1981 Load: 21.7 t ADT: 80

FM

Over: ENGLISH RIVER

078102704, Iowa, IA

Built 1971 Load: 22.3 t ADT: 490

MAIN STREET

Over: ENGLISH CREEK

0.8 mi. S of Jct. SR F67, Iowa, IA

Built 1987 Load: 23.0 t ADT: 1,120

IA 149

Over: ENGLISH CREEK

0.9 mi. S of Jct. SR F67, Iowa, IA

Built 1987 Load: 24.0 t ADT: 1,970

LOCAL

Over: HOG RUN

079100703, Iowa, IA

Built 1981 Load: 24.5 t ADT: 34

US 151

Over: MILL RACE CREEK

0.4 mi. S of Jct. 220, Iowa, IA

Built 2011 Load: 32.4 t ADT: 5,500

S AVE

Over: BR ENGLISH RIVER

078093102, Iowa, IA

Built 2018 Load: 32.4 t ADT: 50

FM

Over: DEEP RIVER

078120504, Iowa, IA

Built 2009 Load: 32.4 t ADT: 250

POWESHIEK IOWA

Over: NORTH ENGLISH RIVER

079121902, Iowa, IA

Built 2019 Load: 32.4 t ADT: 26

LOCAL

Over: STREAM

080092202, Iowa, IA

Built 2017 Load: 32.4 t ADT: 50

200TH ST

Over: SMALL STREAM

080092500, Iowa, IA

Built 2020 Load: 32.4 t ADT: 60

F35 210TH ST

Over: OLD MAN'S CREEK

080112600, Iowa, IA

Built 2016 Load: 32.4 t ADT: 90

W 22 U AVE

Over: SMALL STREAM

081090904, Iowa, IA

Built 2015 Load: 32.4 t ADT: 140

BENTON AND IOWA

Over: UNNAMED CREEK

081110503, Iowa, IA

Built 2012 Load: 32.4 t ADT: 60

140TH ST

Over: HONEY CREEK

081122701, Iowa, IA

Built 2015 Load: 32.4 t ADT: 45

F 34 190TH ST

Over: SMALL STREAM

080092301, Iowa, IA

Built 2018 Load: 32.4 t ADT: 20

US 6

Over: UNNAMED STREAM

0.36 MI. W of SR V52, Iowa, IA

Built 2016 Load: 32.4 t ADT: 1,650

IA 149

Over: BRANCH OLD MANS CREEK

0.9 mi. S of Jct. SR F46, Iowa, IA

Built 1985 Load: 32.7 t ADT: 1,910

LOCAL

Over: TEENER CREEK

078093203, Iowa, IA

Built 1990 Load: 32.7 t ADT: 15

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

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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 5, 2026