Adams County, IA

147 public highway bridges

Adams County Bridge Snapshot

Adams County, Iowa contains 147 public highway bridges in the FHWA National Bridge Inventory. Roughly 9.5% are rated “Good,” 45.6% “Fair,” 44.9% “Poor,” and 44.9% 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.

147

Total Bridges

9.5%

Good

44.9%

Poor

44.9%

Structurally Deficient

Condition Distribution

Good

9.5% (14)

Fair

45.6% (67)

Poor

44.9% (66)

SD

44.9% (66)

All Bridges (147)

Sort:

270TH STREET

Over: TODD BRANCH

071323501, Adams, IA

Built 1961 Load: 11.9 t ADT: 5

190TH STREET

Over: STREAM

072322001, Adams, IA

Built 1962 Load: 11.9 t ADT: 26

190TH STREET

Over: STREAM

072322101, Adams, IA

Built 1962 Load: 11.9 t ADT: 20

180TH STREET

Over: STREAM

072331701, Adams, IA

Built 1961 Load: 11.9 t ADT: 15

FM-110TH STREET

Over: WILLIAMS CREEK

073351201, Adams, IA

Built 1979 Load: 11.9 t ADT: 29

OAK AVENUE

Over: STREAM

073330406, Adams, IA

Built 1930 Load: 12.2 t ADT: 40

WALNUT AVENUE

Over: E FORK E NODAWAY RIVER

073322604, Adams, IA

Built 1979 Load: 12.8 t ADT: 71

FILBERT AVENUE

Over: WILLIAMS CREEK

073340604, Adams, IA

Built 1972 Load: 15.1 t ADT: 45

FM-150TH STREET

Over: SHOW CREEK

073353601, Adams, IA

Built 1958 Load: 15.7 t ADT: 40

ORANGE AVENUE

Over: KEMP CREEK

073332702, Adams, IA

Built 1956 Load: 15.9 t ADT: 15

250TH STREET

Over: W BRANCH 102 RIVER

071332001, Adams, IA

Built 1957 Load: 16.1 t ADT: 50

110TH STREET

Over: THOMPSON CREEK

073330701, Adams, IA

Built 1955 Load: 16.1 t ADT: 15

ORANGE AVENUE

Over: EAST NODAWAY RIVER

072332702, Adams, IA

Built 1957 Load: 16.3 t ADT: 45

H20 110TH STREET

Over: EAST NODAWAY RIVER

073320104, Adams, IA

Built 1980 Load: 16.6 t ADT: 40

US 34

Over: E NODAWAY RIVER & RR

0.8 MI. W OF JCT.148, Adams, IA

Built 1964 Load: 16.8 t ADT: 2,970

265TH STREET

Over: WILLOW CREEK

071332803, Adams, IA

Built 1964 Load: 17.0 t ADT: 26

IRONWOOD AVENUE

Over: STREAM

071342202, Adams, IA

Built 1979 Load: 17.2 t ADT: 15

FM-UNION AVE

Over: STREAM

072321502, Adams, IA

Built 1954 Load: 17.2 t ADT: 50

WILLOW AVENUE

Over: STREAM

072322402, Adams, IA

Built 1968 Load: 17.2 t ADT: 5

210TH STREET

Over: METZ CREEK

072323401, Adams, IA

Built 1965 Load: 17.2 t ADT: 11

FILBERT AVENUE

Over: WEST FORK 102 RIVER

071343101, Adams, IA

Built 1972 Load: 17.8 t ADT: 11

FM-240TH STREET

Over: EAST NODAWAY RIVER

071340735, Adams, IA

Built 1978 Load: 18.8 t ADT: 79

200TH STREET

Over: WEST PLATTE RIVER

072322601, Adams, IA

Built 1979 Load: 18.8 t ADT: 20

230TH STREET

Over: STREAM

071321001, Adams, IA

Built 1960 Load: 20.0 t ADT: 26

230TH STREET

Over: METZ CREEK

071321001, Adams, IA

Built 1958 Load: 20.0 t ADT: 26

FM-250TH STREET

Over: PLATTE RIVER

071322401, Adams, IA

Built 1967 Load: 20.0 t ADT: 34

REDWOOD AVENUE

Over: STREAM

071323102, Adams, IA

Built 1961 Load: 20.0 t ADT: 11

POPLAR AVENUE

Over: W BRANCH 102 RIVER

071331104, Adams, IA

Built 1956 Load: 20.0 t ADT: 11

170TH STREET

Over: STREAM

072331201, Adams, IA

Built 1964 Load: 20.0 t ADT: 20

140TH STREET

Over: STREAM

073342703, Adams, IA

Built 1961 Load: 20.0 t ADT: 15

120TH STREET

Over: SHANGHAI CREEK

073321503, Adams, IA

Built 1980 Load: 20.4 t ADT: 11

ADAMS-CASS ST

Over: STREAM

073350301, Adams, IA

Built 1999 Load: 21.4 t ADT: 5

FM-FILBERT AVE

Over: MIDDLE NODAWAY RIVER

072340702, Adams, IA

Built 1974 Load: 21.6 t ADT: 45

ORANGE AVENUE

Over: BROWN BRANCH

072331502, Adams, IA

Built 1967 Load: 22.1 t ADT: 45

265TH STREET

Over: W BRANCH 102 RIVER

071332903, Adams, IA

Built 1965 Load: 22.3 t ADT: 50

WALNUT AVENUE

Over: EAST NODAWAY RIVER

073321404, Adams, IA

Built 1980 Load: 22.3 t ADT: 71

QUINCY TRAIL

Over: KEMP CREEK

072342101, Adams, IA

Built 1977 Load: 22.5 t ADT: 15

FM-UNION AVENUE

Over: STREAM

072323402, Adams, IA

Built 1960 Load: 24.2 t ADT: 34

WILLOW AVENUE

Over: PLATTE RIVER

072323604, Adams, IA

Built 1965 Load: 24.3 t ADT: 26

UNION AVENUE

Over: STREAM

071320304, Adams, IA

Built 1974 Load: 24.5 t ADT: 20

200TH STREET

Over: STREAM

072342501, Adams, IA

Built 1973 Load: 24.5 t ADT: 26

FM-125TH STREET

Over: STREAM

073341505, Adams, IA

Built 1963 Load: 24.5 t ADT: 159

FM-130TH STREET

Over: SIN CREEK

073352201, Adams, IA

Built 1980 Load: 24.5 t ADT: 34

FM-CHESTNUT AVE

Over: SIN CREEK

073351502, Adams, IA

Built 1969 Load: 24.5 t ADT: 190

UNION AVENUE

Over: STREAM

071323402, Adams, IA

Built 1966 Load: 26.4 t ADT: 26

195TH STREEG

Over: BROWN BRANCH

072332103, Adams, IA

Built 1969 Load: 26.4 t ADT: 15

HICKORY AVENUE

Over: STREAM

073343204, Adams, IA

Built 1967 Load: 26.4 t ADT: 40

ELM AVENUE

Over: SHOW CREEK

073353602, Adams, IA

Built 1966 Load: 26.4 t ADT: 29

QUINCE AVENUE

Over: WILLOW CREEK

071332402, Adams, IA

Built 1965 Load: 27.7 t ADT: 20

ORANGE AVENUE

Over: WILLOW CREEK

071332702, Adams, IA

Built 1969 Load: 27.7 t ADT: 50

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