Adair County, IA

208 public highway bridges

Adair County Bridge Snapshot

Adair County, Iowa contains 208 public highway bridges in the FHWA National Bridge Inventory. Roughly 51% are rated “Good,” 35.1% “Fair,” 12.5% “Poor,” and 12.5% 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.

208
Total Bridges
51%
Good
12.5%
Poor
12.5%
Structurally Deficient

Condition Distribution

Good
51% (106)
Fair
35.1% (73)
Poor
12.5% (26)
SD
12.5% (26)

All Bridges (208)

INDIAN AVE

Good

Over: STREAM

0.1 mi S of 280 on Indian, Adair, IA

Built 2015 Load: 46.3 t ADT: 11

GIBBON AVE

Good

Over: STREAM

74320709, Adair, IA

Built 2012 Load: 47.0 t ADT: 26

JORDAN AVE

Good

Over: SHANGHAR CREEK BRANCH

074322702, Adair, IA

Built 2009 Load: 47.1 t ADT: 30

LOCAL

Good

Over: NO.TURKEY CREEK

077313101, Adair, IA

Built 1992 Load: 47.6 t ADT: 51

FM

Good

Over: EAST NODAWAY RIVER

074312902, Adair, IA

Built 2005 Load: 48.0 t ADT: 71

LOCAL

Good

Over: NODAWAY RIVER

075321101, Adair, IA

Built 1997 Load: 48.0 t ADT: 51

310TH STREET

Good

Over: THREE MILE CREEK

074312401, Adair, IA

Built 2006 Load: 49.4 t ADT: 518

330TH ST

Good

Over: STREAM

0.3 mi E of P13 on 330th, Adair, IA

Built 2015 Load: 49.8 t ADT: 26

N53 DELTA AVE

Good

Over: STREAM

2.6 mi S of G61 on N53, Adair, IA

Built 2016 Load: 49.8 t ADT: 26

140TH ST

Good

Over: STREAM

0.2 mi E of NW S30-77-30, Adair, IA

Built 2016 Load: 49.8 t ADT: 11

LOCAL

Good

Over: NORTH RIVER

077303502, Adair, IA

Built 2004 Load: 49.8 t ADT: 26

320TH ST

Good

Over: UNNAMED STREAM

0.1 mi E of Lewis on 320, Adair, IA

Built 2015 Load: 49.8 t ADT: 21

110TH ST

Good

Over: NORTH RIVER

3.4 mi E of IA25 on 110th, Adair, IA

Built 2021 Load: 50.5 t ADT: 26

ORANGE AVE

Good

Over: STREAM

77312105, Adair, IA

Built 2014 Load: 50.5 t ADT: 15

FM

Good

Over: BRANCH NORTH TURKEY CRK

076310901, Adair, IA

Built 2002 Load: 50.7 t ADT: 79

FM

Good

Over: NODAWAY RIVER

076330401, Adair, IA

Built 2002 Load: 51.1 t ADT: 139

330TH ST

Good

Over: STREAM

0.6 mi W of Hwy 25 on 330, Adair, IA

Built 2023 Load: 52.5 t ADT: 26

SHELDON AVE

Good

Over: NORTH RIVER

.4 mi N of G15 on Sheldon, Adair, IA

Built 2020 Load: 52.5 t ADT: 21

RIVERSIDE AVE

Good

Over: NORTH RIVER

Riverside 0.8 mi N of G15, Adair, IA

Built 2023 Load: 52.5 t ADT: 62

FM

Good

Over: NINE MILE RUN

075303408, Adair, IA

Built 2003 Load: 52.7 t ADT: 29

FM

Good

Over: GRAND RIVER

075303503, Adair, IA

Built 1995 Load: 52.7 t ADT: 26

LOCAL

Good

Over: MIDDLE NODAWAY RIVER

075322105, Adair, IA

Built 1995 Load: 52.7 t ADT: 51

JORDAN AVE

Good

Over: STREAM

075323402, Adair, IA

Built 2011 Load: 53.6 t ADT: 35

230TH ST

Good

Over: BATTLE CREEK

75311020, Adair, IA

Built 2004 Load: 53.7 t ADT: 30

MARION AVE

Good

Over: STREAM

0.8 mi N of G61 on Marion, Adair, IA

Built 2015 Load: 53.8 t ADT: 30

260TH ST

Good

Over: BRUSH BRANCH

075302501, Adair, IA

Built 2011 Load: 57.0 t ADT: 35

LOCAL

Good

Over: EAST NODAWAY RIVER

074313201, Adair, IA

Built 2002 Load: 63.5 t ADT: 46

G 15 (140TH ST)

Good

Over: MIDDLE NODAWAY RIVER

77332870, Adair, IA

Built 2012 Load: 64.4 t ADT: 60

LOCAL

Good

Over: BRANCH NODAWAY RIVER

077332901, Adair, IA

Built 2003 Load: 87.3 t ADT: 29

FONTANELLE RD

Good

Over: MIDDLE RIVER

77321709, Adair, IA

Built 2012 Load: 99.9 t ADT: 89

FM

Good

Over: MIDDLE NODAWAY RIVER BR.

077333001, Adair, IA

Built 2003 Load: 99.9 t ADT: 26

130TH ST

Good

Over: SMALL STREAM

77332080, Adair, IA

Built 2012 Load: 99.9 t ADT: 30

LOCAL

Poor

Over: STREAM

076310404, Adair, IA

Built 1954 ADT: 11

LOCAL

Poor

Over: MIDDLE RIVER

077311701, Adair, IA

Built 1958 Load: 6.3 t ADT: 41

LOCAL

Poor

Over: BRANCH MIDDLE NODAWAY R

074333602, Adair, IA

Built 1960 Load: 6.9 t ADT: 15

LOCAL

Poor

Over: MIDDLE NODAWAY RIVER BR

074330104, Adair, IA

Built 1949 Load: 11.2 t ADT: 15

LOCAL

Poor

Over: NODAWAY RIVER, BRANCH

074331202, Adair, IA

Built 1960 Load: 12.9 t ADT: 35

LOCAL

Poor

Over: MIDDLE RIVER

075323301, Adair, IA

Built 1950 Load: 13.5 t ADT: 30

LOCAL

Poor

Over: BRANCH MIDDLE RIVER

076301802, Adair, IA

Built 1948 Load: 13.7 t ADT: 15

LOCAL

Poor

Over: STREAM

074333101, Adair, IA

Built 1954 Load: 14.2 t ADT: 15

LOCAL

Poor

Over: CREEK

075323101, Adair, IA

Built 1951 Load: 14.9 t ADT: 46

LOCAL

Poor

Over: MIDDLE RIVER

077320101, Adair, IA

Built 1915 Load: 16.7 t ADT: 29

LOCAL

Poor

Over: RUTT BRANCH

075320402, Adair, IA

Built 1900 Load: 16.9 t ADT: 35

LOCAL

Poor

Over: MIDDLE RIVER

076302603, Adair, IA

Built 1968 Load: 19.5 t ADT: 15

LOCAL

Poor

Over: CREEK

075322703, Adair, IA

Built 1954 Load: 23.2 t ADT: 62

LOCAL

Poor

Over: RUTT BRANCH

075331202, Adair, IA

Built 1960 Load: 25.6 t ADT: 62

LOCAL

Poor

Over: STREAM

077300101, Adair, IA

Built 1947 Load: 32.7 t ADT: 11

LOCAL

Poor

Over: STREAM

074333639, Adair, IA

Built 1900 Load: 32.7 t ADT: 11

TRENTON AVE

Structurally Deficient

Over: STREAM

074302902, Adair, IA

Built 1945 ADT: 15

LOCAL

Structurally Deficient

Over: NODAWAY RIVER

074333239, Adair, IA

Built 1946 ADT: 45

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