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)

LOCAL

Good

Over: OLD MAN'S CREEK

078100201, Iowa, IA

Built 2003 Load: 32.7 t ADT: 90

LOCAL

Good

Over: BR NORTH ENGLISH RIVER

078110201, Iowa, IA

Built 2005 Load: 32.7 t ADT: 40

FM

Good

Over: NORTH FORK ENGLISH RIVER

078110302, Iowa, IA

Built 2006 Load: 32.7 t ADT: 70

Y AVE

Good

Over: BRANCH BRADLEY CREEK

079091304, Iowa, IA

Built 2003 Load: 32.7 t ADT: 20

LOCAL

Good

Over: BRANCH BRADLY CREEK

079091405, Iowa, IA

Built 2003 Load: 32.7 t ADT: 11

LOCAL

Good

Over: DRAINAGE DITCH

079091804, Iowa, IA

Built 2002 Load: 32.7 t ADT: 50

LOCAL

Good

Over: BRANCH OLD MANS CREEK

079093603, Iowa, IA

Built 2001 Load: 32.7 t ADT: 26

LOCAL

Good

Over: SMALL STREAM

080091702, Iowa, IA

Built 2001 Load: 32.7 t ADT: 60

FM

Good

Over: SMALL

080101802, Iowa, IA

Built 1994 Load: 32.7 t ADT: 1,790

LOCAL

Good

Over: SMALL STREAM

080102501, Iowa, IA

Built 2005 Load: 32.7 t ADT: 15

HH AVE

Good

Over: BIG BEAR CREEK

080110806, Iowa, IA

Built 2004 Load: 32.7 t ADT: 90

LOCAL LEGNO

Good

Over: SMALL STREAM

080113106, Iowa, IA

Built 2002 Load: 32.7 t ADT: 30

FM

Good

Over: SMALL

081101803, Iowa, IA

Built 1998 Load: 32.7 t ADT: 1,230

FM

Good

Over: SMALL

078103104, Iowa, IA

Built 1987 Load: 32.7 t ADT: 160

210TH ST

Good

Over: LITTLE BEAR CREEK

080123301, Iowa, IA

Built 2001 Load: 32.7 t ADT: 71

LOCAL

Good

Over: BRANCH OLD MAN'S CREEK

079093503, Iowa, IA

Built 1999 Load: 33.2 t ADT: 40

FM

Good

Over: DRAINAGE DITCH

079101400, Iowa, IA

Built 2017 Load: 33.4 t ADT: 120

LOCAL

Good

Over: LITTLE BEAR CREEK

080110906, Iowa, IA

Built 2009 Load: 37.6 t ADT: 20

R AVE

Good

Over: SMALL STREAM

081101204, Iowa, IA

Built 2012 Load: 37.6 t ADT: 40

LOCAL

Good

Over: OLD MANS CREEK

079100804, Iowa, IA

Built 1992 Load: 37.7 t ADT: 50

LOCAL

Good

Over: MIDDLE FORK ENGLISH RVR

078112502, Iowa, IA

Built 2004 Load: 37.9 t ADT: 140

125TH STREET

Good

Over: SMALL STREAM

081121411, Iowa, IA

Built 2022 Load: 37.9 t ADT: 60

140TH ST

Good

Over: HONEY CREEK

081122203, Iowa, IA

Built 2018 Load: 37.9 t ADT: 50

FM

Good

Over: CREEK

078110203, Iowa, IA

Built 2000 Load: 38.2 t ADT: 690

FM

Good

Over: NORTH ENGLISH RIVER

079122002, Iowa, IA

Built 2008 Load: 38.2 t ADT: 520

FM

Good

Over: BIG BEAR CREEK

080121506, Iowa, IA

Built 1998 Load: 38.2 t ADT: 630

FM

Good

Over: BRANCH MIDDLE ENGLISH

078112201, Iowa, IA

Built 2000 Load: 38.5 t ADT: 35

310TH ST

Good

Over: UNNAMED CREEK

078122101, Iowa, IA

Built 2013 Load: 38.8 t ADT: 71

FM

Good

Over: OLD MANS CREEK

080113404, Iowa, IA

Built 1992 Load: 38.8 t ADT: 40

LOCAL

Good

Over: DEVILS RUN CEEK

079112903, Iowa, IA

Built 2006 Load: 40.2 t ADT: 34

FM

Good

Over: NORTH ENGLISH RIVER

079113208, Iowa, IA

Built 2002 Load: 40.3 t ADT: 320

LOCAL

Good

Over: OLD MANS CREEK

079110401, Iowa, IA

Built 2006 Load: 40.6 t ADT: 15

225TH ST

Good

Over: BRANCH OLD MANS CREEK

079100607, Iowa, IA

Built 2020 Load: 41.1 t ADT: 50

FM

Good

Over: LITTLE BEAR CREEK

080111806, Iowa, IA

Built 2000 Load: 41.5 t ADT: 540

LOCAL

Good

Over: MILL RACE

081092612, Iowa, IA

Built 2001 Load: 44.4 t ADT: 1,002

LOCAL

Good

Over: BR MIDDLE FORK ENGLISH

078112612, Iowa, IA

Built 2004 Load: 45.3 t ADT: 140

LOCAL

Good

Over: SMALL STREAM

080093501, Iowa, IA

Built 2003 Load: 45.5 t ADT: 30

FM

Good

Over: HOG RUN

079100704, Iowa, IA

Built 1999 Load: 45.7 t ADT: 2,760

SR W21 (U AVE)

Good

Over: OLD MAN'S CREEK

079093306, Iowa, IA

Built 2012 Load: 47.0 t ADT: 450

US 6

Good

Over: HILTON CREEK

2.9 mi. W of Jct. IA 220, Iowa, IA

Built 2010 Load: 47.1 t ADT: 3,190

WW AVE

Good

Over: DEER CREEK

078091102, Iowa, IA

Built 2021 Load: 48.0 t ADT: 50

107TH ST

Good

Over: SMALL STREAM

081110207, Iowa, IA

Built 2019 Load: 48.0 t ADT: 45

F15 (108TH ST)

Good

Over: SMALL STREAM

081110 08, Iowa, IA

Built 2013 Load: 48.0 t ADT: 60

LOCAL

Good

Over: HILTON CREEK

080100503, Iowa, IA

Built 2005 Load: 49.8 t ADT: 50

FM

Good

Over: MIDDLE ENGLISH

078122202, Iowa, IA

Built 2002 Load: 50.0 t ADT: 310

FM

Good

Over: SMALL STREAM

081111202, Iowa, IA

Built 2000 Load: 50.0 t ADT: 1,230

IA 149

Good

Over: NORTH FORK ENGLISH RIVER

0.8 MI. S OF SR V66, Iowa, IA

Built 1987 Load: 53.3 t ADT: 2,720

IA 149

Good

Over: STREAM

0.7 mi. N of Jct. SR F52, Iowa, IA

Built 1985 Load: 67.1 t ADT: 1,910

MM AVE

Good

Over: SMALL STREAM

080101804, Iowa, IA

Built 2023 Load: 73.6 t ADT: 46

LOCAL

Poor

Over: SMALL STREAM

079101307, Iowa, IA

Built 1984 Load: 10.7 t ADT: 71

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