Monona County, IA

125 public highway bridges

Monona County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Monona County, Iowa contains 125 public highway bridges. Roughly 36.8% are rated “Good,” 31.2% “Fair,” and 28% “Poor.” Poor means the lowest applicable deck, superstructure, substructure, or culvert rating is 4 or below on the 0–9 NBI scale. It is a condition category, not a live safety or closure decision.

Responsible agencies inspect covered bridges on risk-based intervals under current NBIS rules and submit inventory data to FHWA annually. The list below shows every NBI-tracked bridge in the county. Use the “Sort by” controls to change the ordering, and click any row for its reported inspection date, traffic count, and condition fields.

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

125
Total Bridges
36.8%
Good
31.2%
Fair
28%
Poor Condition

Condition Distribution

Good
36.8% (46)
Fair
31.2% (39)
Poor
28% (35)

All Bridges (125)

IA 175

Good

Over: DRAINAGE DITCH

1.9 mi. W of E jct IA 141, Monona, IA

Built 1973 Load: 31.5 t ADT: 1,200

IA 175

Good

Over: MAPLE RIVER

1.0 MI. W. OF IA 141, Monona, IA

Built 2022 Load: 32.4 t ADT: 1,200

IA 183

Good

Over: NATURAL STREAM

3.5 mi. S of Co. Rd. E-54, Monona, IA

Built 2015 Load: 32.4 t ADT: 580

IA 183

Good

Over: STREAM

1.1 mi. S of IA 37, Monona, IA

Built 2011 Load: 32.4 t ADT: 420

NB I-29

Good

Over: CLEGHORN CREEK

4.5 mi. S of IA 175, Monona, IA

Built 2012 Load: 32.4 t ADT: 7,250

NB I-29

Good

Over: ROBINSON DITCH

4.1 mi. S of jct. IA 141, Monona, IA

Built 2011 Load: 32.4 t ADT: 7,800

TEAK AVE

Good

Over: LOCAL STREAM

082422704, Monona, IA

Built 2017 Load: 32.4 t ADT: 29

E54

Good

Over: MONONA-HARRISON DITCH

083443203, Monona, IA

Built 2015 Load: 32.4 t ADT: 289

E54

Good

Over: LITTLE SIOUX RIVER

083443301, Monona, IA

Built 2015 Load: 32.4 t ADT: 289

TULIP AVE

Good

Over: UPPER SOLDIER RIVER

084423518, Monona, IA

Built 2011 Load: 32.4 t ADT: 159

LOCAL

Good

Over: NORWAY CREEK

082420602, Monona, IA

Built 2010 Load: 32.7 t ADT: 29

SUMAC AVE

Good

Over: SKINNER CREEK

083422202, Monona, IA

Built 2008 Load: 32.7 t ADT: 45

105TH ST

Good

Over: DUTCH CREEK

085430203, Monona, IA

Built 2012 Load: 32.7 t ADT: 29

E 34

Good

Over: JORDAN CREEK

084432503, Monona, IA

Built 2012 Load: 32.7 t ADT: 259

FM

Good

Over: SIMMONS CREEK

085431406, Monona, IA

Built 1987 Load: 33.3 t ADT: 71

LOCAL

Good

Over: SOLDIER RIVER

082433003, Monona, IA

Built 1992 Load: 33.7 t ADT: 45

170TH ST

Good

Over: TRIB TO SOLDIER RIVER

084421103, Monona, IA

Built 2016 Load: 34.7 t ADT: 20

E64 REDWOOD AVE

Good

Over: BRANCH OF ELK CREEK

082432400, Monona, IA

Built 2022 Load: 36.2 t ADT: 34

245TH ST

Good

Over: JORDAN CREEK

083431503, Monona, IA

Built 2016 Load: 36.3 t ADT: 11

FM

Good

Over: MAPLE RIVER

084442403, Monona, IA

Built 1957 Load: 36.5 t ADT: 188

FM

Good

Over: DRAINAGE DITCH

085462210, Monona, IA

Built 1998 Load: 37.0 t ADT: 1,017

FM

Good

Over: STREAM

084440904, Monona, IA

Built 1957 Load: 37.4 t ADT: 11

WEST ST

Good

Over: MCCANDLES DITCH

085463507, Monona, IA

Built 2020 Load: 37.6 t ADT: 56

FM

Good

Over: SOLDIER RIVER

083423006, Monona, IA

Built 2000 Load: 38.5 t ADT: 40

LOCAL ROAD

Good

Over: STREAM

082422605, Monona, IA

Built 1999 Load: 38.8 t ADT: 34

210TH ST

Good

Over: JORDAN CREEK

084433501, Monona, IA

Built 2020 Load: 39.9 t ADT: 29

235TH ST

Good

Over: MCCANDLESS-CLEGHORN

083450803, Monona, IA

Built 2021 Load: 41.1 t ADT: 150

IA 37

Good

Over: EAST WILLOW RIVER

0.7 mi. E of SR E54, Monona, IA

Built 1996 Load: 42.8 t ADT: 830

FM

Good

Over: ELK CREEK

082432402, Monona, IA

Built 1988 Load: 43.3 t ADT: 45

SUMAC AVE

Good

Over: STREAM

084422206, Monona, IA

Built 2019 Load: 43.4 t ADT: 40

LOCAL

Good

Over: SOLDIER RIVER

083420403, Monona, IA

Built 2009 Load: 43.7 t ADT: 11

E26 160TH ST

Good

Over: RUSH CREEK

084420203, Monona, IA

Built 2021 Load: 43.7 t ADT: 79

E16

Good

Over: RUSH CREEK

085422401, Monona, IA

Built 2021 Load: 44.4 t ADT: 627

L16

Good

Over: ELK CREEK

082431504, Monona, IA

Built 2020 Load: 45.0 t ADT: 170

E46 245TH ST

Good

Over: SOLDIER RIVER

083421707, Monona, IA

Built 2020 Load: 47.6 t ADT: 60

FM

Good

Over: LITTLE SIOUX RIVER

082442103, Monona, IA

Built 2007 Load: 51.8 t ADT: 100

LOCAL(WHITING)

Good

Over: MCCANDLESS CLEGHORN

084460201, Monona, IA

Built 1997 Load: 52.9 t ADT: 763

IA 37

Good

Over: JORDAN CREEK

6.3 mi. E of IA 175, Monona, IA

Built 1979 Load: 58.9 t ADT: 780

LOCAL RD

Good

Over: CLEGHORN DD

083450703, Monona, IA

Built 2002 Load: 62.9 t ADT: 319

IA 141

Good

Over: SIMMONS CREEK

0.8 Mi W of W Jct. IA175, Monona, IA

Built 2014 Load: 66.1 t ADT: 1,880

LOCAL

Poor

Over: WILLOW CREEK

082421404, Monona, IA

Built 1905 ADT: 11

LOCAL

Poor

Over: JORDAN CREEK

082430503, Monona, IA

Built 1912 ADT: 15

LOCAL ROAD

Poor

Over: LOCAL STREAM

085431405, Monona, IA

Built 1964 ADT: 26

LOCAL RD

Poor

Over: WEST FORK DD

085450401, Monona, IA

Built 1912 ADT: 34

100TH ST

Poor

Over: FARMERS GARRETSON DD

085450501, Monona, IA

Built 1913 ADT: 11

LOCAL

Poor

Over: LOCAL STREAM

082432208, Monona, IA

Built 1900 Load: 10.8 t ADT: 11

FM

Poor

Over: NE NORWAY CREEK

083422602, Monona, IA

Built 1949 Load: 11.1 t ADT: 50

FM

Poor

Over: NORWAY CREEK

083423401, Monona, IA

Built 1953 Load: 11.9 t ADT: 40

LOCAL

Poor

Over: TRIB MAPLE RIVER

084430102, Monona, IA

Built 1900 Load: 12.2 t ADT: 20

LOCAL ROAD

Poor

Over: LOCAL STREAM

083430206, Monona, IA

Built 1962 Load: 13.5 t ADT: 29

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

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Data sourced from official public datasets. See our methodology for details. Retrieved and formatted by PlainBridges

Every figure on PlainBridge is rendered directly from federal source data, no number is typed in by an editor. This page draws directly on federal source data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.