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)

Sort:

IA 25

Over: I-80

AT JCT. I-80, Adair, IA

Built 1958 ADT: 23,600

SR N-54

Over: I-80

AT JCT. SR N-54, Adair, IA

Built 1958 ADT: 21,000

FONTANELLE ROAD

Over: I-80

5.9 MI. W OF JCT. IA 25, Adair, IA

Built 1958 ADT: 23,100

LOCAL

Over: STREAM

075320603, Adair, IA

Built 1950 Load: 6.9 t ADT: 21

LOCAL

Over: MIDDLE RIVER

077312703, Adair, IA

Built 1959 Load: 7.7 t ADT: 11

LOCAL

Over: STREAM

074323601, Adair, IA

Built 1961 Load: 9.0 t ADT: 15

LOCAL

Over: GRAND RIVER

075301602, Adair, IA

Built 1999 Load: 10.8 t ADT: 11

LOCAL

Over: NODAWAY RIVER,WEST FORK

074330901, Adair, IA

Built 1949 Load: 10.9 t ADT: 30

LOCAL

Over: BUSH BRANCH

075301304, Adair, IA

Built 1915 Load: 11.7 t ADT: 11

LOCAL

Over: STREAM

075332508, Adair, IA

Built 1949 Load: 11.7 t ADT: 11

LOCAL

Over: MIDDLE RIVER

076300702, Adair, IA

Built 1915 Load: 12.1 t ADT: 5

YORK AVE

Over: NORTH RIVER

077303602, Adair, IA

Built 1915 Load: 12.2 t ADT: 35

LOCAL

Over: STREAM

077311401, Adair, IA

Built 1938 Load: 13.6 t ADT: 15

LOCAL

Over: STREAM

076313101, Adair, IA

Built 1955 Load: 14.8 t ADT: 21

LOCAL

Over: MIDDLE RIVER

077320201, Adair, IA

Built 1953 Load: 15.7 t ADT: 60

LOCAL

Over: MIDDLE RIVER

074332603, Adair, IA

Built 1920 Load: 15.8 t ADT: 30

LOCAL

Over: MIDDLE NODAWAY RIVER

074332402, Adair, IA

Built 1950 Load: 16.3 t ADT: 82

LOCAL RD

Over: SHANGHAR CREEK

074322703, Adair, IA

Built 1960 Load: 18.2 t ADT: 15

TRENTON AVE

Over: STREAM

075302002, Adair, IA

Built 1952 Load: 19.1 t ADT: 72

FM

Over: STREAM

077330803, Adair, IA

Built 1970 Load: 19.2 t ADT: 1,564

LOCAL

Over: MARVEL CREEK

075311302, Adair, IA

Built 1985 Load: 19.4 t ADT: 41

LOCAL

Over: SHANGHAR CREEK

074321201, Adair, IA

Built 1940 Load: 19.8 t ADT: 21

LOCAL

Over: BRANCH NORTH RIVER

076300202, Adair, IA

Built 1966 Load: 20.4 t ADT: 30

LOCAL

Over: SHANGHAR CREEK

074321403, Adair, IA

Built 1945 Load: 21.2 t ADT: 15

LOCAL

Over: NORTH TURKEY CREEK

077313303, Adair, IA

Built 2006 Load: 21.4 t ADT: 11

LOCAL

Over: NINE MILE CREEK

075330301, Adair, IA

Built 1993 Load: 21.6 t ADT: 26

LOCAL

Over: CREEK

075331504, Adair, IA

Built 2008 Load: 21.9 t ADT: 11

FM

Over: SHANGHAR CREEK

074322301, Adair, IA

Built 1977 Load: 22.0 t ADT: 468

LOCAL

Over: MIDDLE RIVER

076301801, Adair, IA

Built 1915 Load: 22.3 t ADT: 30

FM

Over: MIDDLE RIVER

076302609, Adair, IA

Built 1900 Load: 22.6 t ADT: 20

LOCAL

Over: WEST FORK NODAWAY RIVER

075330903, Adair, IA

Built 1955 Load: 22.7 t ADT: 21

FM

Over: NORTH RIVER

077301901, Adair, IA

Built 1950 Load: 22.9 t ADT: 131

FM

Over: GRAND RIVER

076313401, Adair, IA

Built 1950 Load: 23.2 t ADT: 34

LOCAL

Over: GRAND RIVER

076303102, Adair, IA

Built 1958 Load: 23.9 t ADT: 15

FM

Over: STREAM

074323506, Adair, IA

Built 1950 Load: 24.2 t ADT: 40

LOCAL

Over: MIDDLE RIVER

076302706, Adair, IA

Built 1950 Load: 24.3 t ADT: 30

MARION AVE

Over: STREAM

074310602, Adair, IA

Built 1992 Load: 24.8 t ADT: 26

LOCAL

Over: RUTT BRANCH

075331401, Adair, IA

Built 1961 Load: 24.9 t ADT: 11

LOCAL

Over: STREAM

074320602, Adair, IA

Built 1950 Load: 25.0 t ADT: 51

FM

Over: CREEK

075303301, Adair, IA

Built 1932 Load: 25.1 t ADT: 50

FM

Over: MIDDLE NODAWAY RIVER

074320504, Adair, IA

Built 1967 Load: 25.3 t ADT: 509

FM

Over: STREAM

077332201, Adair, IA

Built 2001 Load: 25.3 t ADT: 100

LOCAL

Over: NORTH RIVER

077303402, Adair, IA

Built 2004 Load: 25.7 t ADT: 21

LOCAL RD

Over: MIDDLE RIVER

076302001, Adair, IA

Built 1979 Load: 26.3 t ADT: 30

P28 STUART ST

Over: CREEK

077300906, Adair, IA

Built 1977 Load: 26.6 t ADT: 1,295

LOCAL

Over: BRANCH OF NODAWAY RIVER

077333507, Adair, IA

Built 1949 Load: 26.9 t ADT: 11

LOCAL RD

Over: NINE MILE CREEK

075330404, Adair, IA

Built 1971 Load: 27.0 t ADT: 51

LOCAL

Over: STREAM

077330801, Adair, IA

Built 1993 Load: 29.0 t ADT: 51

FM

Over: MIDDLE RIVER

076302104, Adair, IA

Built 1969 Load: 29.2 t ADT: 1,047

LOCAL

Over: SMALL

076301201, Adair, IA

Built 1967 Load: 29.6 t ADT: 51

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