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)

330TH ST

Good

Over: LOCAL STREAM

0.1 mi W of P33 on 330th, Adair, IA

Built 2017 Load: 34.3 t ADT: 26

110TH ST

Good

Over: MIDDLE RIVER

3.1 mi E of N54 on 110th, Adair, IA

Built 2015 Load: 34.7 t ADT: 51

G61 310TH ST

Good

Over: UNNAMED CREEK

2.4 mi E of N72 on G61, Adair, IA

Built 2015 Load: 34.7 t ADT: 468

P17 NEVADA AVE

Good

Over: STREAM

074312902, Adair, IA

Built 2004 Load: 34.8 t ADT: 71

FM

Good

Over: NODAWAY RIVER

075333402, Adair, IA

Built 2004 Load: 35.6 t ADT: 79

N54 DELTA AVE

Good

Over: BRANCH OF NODAWAY RVR

2.5 mi N of G27 on N54, Adair, IA

Built 2013 Load: 35.9 t ADT: 349

GIBBON AVE

Good

Over: MIDDLE RIVER

0.2 mi S of Co Line, Adair, IA

Built 2016 Load: 36.0 t ADT: 15

FM

Good

Over: MIDDLE NODAWAY RIVER

074333402, Adair, IA

Built 2005 Load: 36.3 t ADT: 34

LEWIS AVE

Good

Over: NODAWAY CREEK

3.4 mi S of G35 on Lewis, Adair, IA

Built 2020 Load: 36.3 t ADT: 62

BROWN AVE

Good

Over: STREAM

0.6 mi S of 92 on Brown, Adair, IA

Built 2016 Load: 36.3 t ADT: 62

300TH ST

Good

Over: STREAM

74321810, Adair, IA

Built 2012 Load: 36.6 t ADT: 46

ORANGE AVE

Good

Over: STREAM

1 mi S of 92 on Orange Av, Adair, IA

Built 2014 Load: 36.6 t ADT: 21

LOCAL

Good

Over: MIDDLE NODAWAY RIVER

075330403, Adair, IA

Built 1998 Load: 36.6 t ADT: 72

P25 (RIVERSIDE)

Good

Over: MIDDLE RIVER, BRANCH

76311309, Adair, IA

Built 2012 Load: 36.6 t ADT: 34

180TH ST

Good

Over: NINE MILE CREEK

1.1 mi W of N72 on 180th, Adair, IA

Built 2014 Load: 36.6 t ADT: 21

ELK AVE

Good

Over: BRANCH NODAWAY RIVER

77332609, Adair, IA

Built 2012 Load: 36.6 t ADT: 30

FM

Good

Over: NODAWAY CREEK

076322201, Adair, IA

Built 2006 Load: 37.2 t ADT: 60

FM

Good

Over: CLARK BRANCH

074330510, Adair, IA

Built 1994 Load: 37.8 t ADT: 249

330TH ST

Good

Over: STREAM

0.9 mi W of P13 on 330th, Adair, IA

Built 2021 Load: 38.6 t ADT: 26

LOCAL

Good

Over: SMALL STREAM

074322801, Adair, IA

Built 2002 Load: 39.6 t ADT: 15

LOCAL

Good

Over: SMALL STREAM

074323207, Adair, IA

Built 2002 Load: 39.6 t ADT: 11

FM

Good

Over: STREAM

077330501, Adair, IA

Built 2005 Load: 39.6 t ADT: 71

FM

Good

Over: STREAM

077330501, Adair, IA

Built 2003 Load: 39.6 t ADT: 71

330TH ST

Good

Over: WEST FORK NODAWAY RIVER

74332865, Adair, IA

Built 2012 Load: 39.9 t ADT: 51

N54 DELTA AVE

Good

Over: NINE MILE CREEK

4.8 mi N of IA 92 on N54, Adair, IA

Built 2016 Load: 39.9 t ADT: 34

PINEWOOD AVE

Good

Over: MIDDLE RIVER

0.8 mi S of G15, Adair, IA

Built 2017 Load: 39.9 t ADT: 72

MARION AVE

Good

Over: NORTH TURKEY CREEK

77313005, Adair, IA

Built 2014 Load: 39.9 t ADT: 35

QUEBEC AVE

Good

Over: MIDDLE RIVER

2.2 mi S of G15 on Quebec, Adair, IA

Built 2021 Load: 39.9 t ADT: 21

G15 (130TH ST)

Good

Over: NORTH TURKEY CREEK

2.6 mi west of hwy 25, Adair, IA

Built 2012 Load: 39.9 t ADT: 60

220TH ST

Good

Over: STREAM

075320601, Adair, IA

Built 2009 Load: 40.0 t ADT: 30

MONROE AVE

Good

Over: STREAM

0.5 mi N of G35 on Monroe, Adair, IA

Built 2019 Load: 40.1 t ADT: 30

FM

Good

Over: W FORK NODAWAY RIVER

074330401, Adair, IA

Built 2009 Load: 40.2 t ADT: 71

FM

Good

Over: RUTT BRANCH

75320802, Adair, IA

Built 2009 Load: 41.4 t ADT: 319

280TH ST

Good

Over: MIDDLE NODAWAY RIVER

0.8 mi E of N72 on 280th, Adair, IA

Built 2023 Load: 41.8 t ADT: 15

LOCAL

Good

Over: NINE MILE CREEK

076332790, Adair, IA

Built 2004 Load: 41.8 t ADT: 11

PINEWOOD AVE

Good

Over: NORTH TURKEY CREEK

1.2 mi N of G27, Adair, IA

Built 2015 Load: 42.4 t ADT: 21

250TH ST

Good

Over: W FORK NODAWAY RIVER

0.7 mi E of N54 on 250th, Adair, IA

Built 2021 Load: 43.1 t ADT: 123

LOCAL

Good

Over: MIDDLE RIVER

000000000, Adair, IA

Built 2009 Load: 43.3 t ADT: 41

330TH ST

Good

Over: THREE MILE CREEK

1.5 mi E of P33 on 330th, Adair, IA

Built 2015 Load: 43.4 t ADT: 26

G61 310TH ST

Good

Over: STREAM

1.7 mi W of N51 on G61, Adair, IA

Built 2017 Load: 43.7 t ADT: 45

LOCAL

Good

Over: SHANGHAR CREEK

074322702, Adair, IA

Built 2009 Load: 44.6 t ADT: 30

LOCAL

Good

Over: SHANGHAR CREEK

074323402, Adair, IA

Built 2009 Load: 44.6 t ADT: 5

320TH ST

Good

Over: STREAM

74331939, Adair, IA

Built 2014 Load: 45.0 t ADT: 11

G35 (190TH ST)

Good

Over: STREAM

76321960, Adair, IA

Built 2013 Load: 45.0 t ADT: 50

N77 KENT AVE

Good

Over: NODAWAY RIVER

1.2 mi S of G35 on N77, Adair, IA

Built 2016 Load: 45.0 t ADT: 29

LEWIS AVE

Good

Over: NORTH TURKEY CREEK

0.9 mi S of G15 on Lewis, Adair, IA

Built 2018 Load: 45.0 t ADT: 30

140TH ST

Good

Over: NORTH TURKEY CREEK

1.9 mi W of 25 on 140th, Adair, IA

Built 2018 Load: 45.0 t ADT: 21

285 ST

Good

Over: MIDDLE NODAWAY RIVER

074320605, Adair, IA

Built 2000 Load: 45.5 t ADT: 26

LOCAL

Good

Over: MARVEL CREEK

075300702, Adair, IA

Built 1997 Load: 45.5 t ADT: 82

FM

Good

Over: MIDDLE NODAWAY RIVER

077333202, Adair, IA

Built 1996 Load: 45.5 t ADT: 29

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

Related

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