Sioux County, IA

429 public highway bridges

Sioux County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Sioux County, Iowa contains 429 public highway bridges. Roughly 61.5% are rated “Good,” 34% “Fair,” and 2.3% “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.

429
Total Bridges
61.5%
Good
34%
Fair
2.3%
Poor Condition

Condition Distribution

Good
61.5% (264)
Fair
34% (146)
Poor
2.3% (10)

All Bridges (429)

LOCAL

Fair

Over: SMALL

096462601, Sioux, IA

Built 1981 Load: 99.9 t ADT: 80

LOCAL

Fair

Over: SMALL

095453401, Sioux, IA

Built 1987 Load: 99.9 t ADT: 131

LOCAL

Fair

Over: SMALL

097433302, Sioux, IA

Built 1983 Load: 99.9 t ADT: 71

LOCAL

Fair

Over: SMALL

097461002, Sioux, IA

Built 1984 Load: 99.9 t ADT: 60

280TH ST

Fair

Over: SMALL

097440801, Sioux, IA

Built 1978 Load: 99.9 t ADT: 45

IA 10

Good

Over: DRAINAGE DITCH

1.3 mi. E of S.R. B-46, Sioux, IA

Built 1954 Load: 13.6 t ADT: 1,910

LOCAL

Good

Over: SMALL STREAM

094431602, Sioux, IA

Built 1977 Load: 20.5 t ADT: 26

LOCAL

Good

Over: SMALL STREAM

094433002, Sioux, IA

Built 1938 Load: 20.5 t ADT: 50

LOCAL

Good

Over: SMALL STREAM

094442602, Sioux, IA

Built 1977 Load: 20.5 t ADT: 45

LOCAL

Good

Over: SMALL STREAM

094450701, Sioux, IA

Built 1937 Load: 20.5 t ADT: 20

LOCAL

Good

Over: SMALL STREAM

094451102, Sioux, IA

Built 2002 Load: 20.5 t ADT: 40

LOCAL

Good

Over: SMALL STREAM

094452801, Sioux, IA

Built 1982 Load: 20.5 t ADT: 71

LOCAL

Good

Over: SMALL

094470402, Sioux, IA

Built 1978 Load: 20.5 t ADT: 50

LOCAL

Good

Over: SMALL

094470402, Sioux, IA

Built 1980 Load: 20.5 t ADT: 50

LOCAL

Good

Over: SMALL STREAM

094472301, Sioux, IA

Built 1977 Load: 20.5 t ADT: 26

LOCAL

Good

Over: SMALL STREAM

094473402, Sioux, IA

Built 1948 Load: 20.5 t ADT: 30

LOCAL

Good

Over: SMALL

094473402, Sioux, IA

Built 1980 Load: 20.5 t ADT: 30

LOCAL

Good

Over: SMALL STREAM

095430102, Sioux, IA

Built 1940 Load: 20.5 t ADT: 20

LOCAL

Good

Over: SMALL

095441701, Sioux, IA

Built 1979 Load: 20.5 t ADT: 45

LOCAL

Good

Over: STREAM

095450102, Sioux, IA

Built 1978 Load: 20.5 t ADT: 131

LOCAL

Good

Over: SIXMILE CREEK

095460302, Sioux, IA

Built 1937 Load: 20.5 t ADT: 71

LOCAL

Good

Over: SMALL STREAM

095460901, Sioux, IA

Built 1938 Load: 20.5 t ADT: 80

LOCAL

Good

Over: SMALL STREAM

095460902, Sioux, IA

Built 1947 Load: 20.5 t ADT: 60

LOCAL RD

Good

Over: SIX MILE CREEK

095471801, Sioux, IA

Built 1992 Load: 20.5 t ADT: 15

LOCAL

Good

Over: DRY CREEK

095473101, Sioux, IA

Built 1938 Load: 20.5 t ADT: 60

LOCAL

Good

Over: SMALL STREAM

096441801, Sioux, IA

Built 1938 Load: 20.5 t ADT: 15

LOCAL

Good

Over: NO NAME CREEK

096441802, Sioux, IA

Built 1900 Load: 20.5 t ADT: 40

LOCAL

Good

Over: SMALL

096450702, Sioux, IA

Built 1940 Load: 20.5 t ADT: 45

LOCAL

Good

Over: SMALL

096461902, Sioux, IA

Built 1978 Load: 20.5 t ADT: 20

LOCAL

Good

Over: SMALL STREAM

096463502, Sioux, IA

Built 1938 Load: 20.5 t ADT: 40

LOCAL

Good

Over: SMALL

097431801, Sioux, IA

Built 1941 Load: 20.5 t ADT: 15

LOCAL

Good

Over: SM STREAM

097433502, Sioux, IA

Built 1937 Load: 20.5 t ADT: 34

LOCAL

Good

Over: SM STREAM

097440101, Sioux, IA

Built 2002 Load: 20.5 t ADT: 20

LOCAL

Good

Over: SM STREAM

097440501, Sioux, IA

Built 1977 Load: 20.5 t ADT: 26

LOCAL

Good

Over: SM STREAM

097450102, Sioux, IA

Built 1977 Load: 20.5 t ADT: 60

LOCAL

Good

Over: SM STREAM

097450401, Sioux, IA

Built 1931 Load: 20.5 t ADT: 20

LOCAL

Good

Over: SM STREAM

097450702, Sioux, IA

Built 1947 Load: 20.5 t ADT: 40

LOCAL

Good

Over: SMALL

097452301, Sioux, IA

Built 1978 Load: 20.5 t ADT: 34

LOCAL

Good

Over: SMALL

097453002, Sioux, IA

Built 1980 Load: 20.5 t ADT: 80

DOVE AVE

Good

Over: SMALL STREAM

094463002, Sioux, IA

Built 2021 Load: 21.0 t ADT: 15

IA 12

Good

Over: DRAINAGE

1.3 mi. S of Jct. IA 10, Sioux, IA

Built 1954 Load: 22.7 t ADT: 1,120

LOCAL

Good

Over: SMALL STREAM

094483502, Sioux, IA

Built 1977 Load: 22.9 t ADT: 34

LOCAL

Good

Over: OTTER CREEK

097440201, Sioux, IA

Built 1987 Load: 25.1 t ADT: 50

DOGWOOD AVE

Good

Over: SMALL STREAM

094472502, Sioux, IA

Built 2022 Load: 25.5 t ADT: 26

IA 10

Good

Over: SPRING CREEK

2.1 mi W of jct SR K-30, Sioux, IA

Built 1987 Load: 25.6 t ADT: 2,040

LOCAL

Good

Over: SIX MILE CREEK

094470701, Sioux, IA

Built 1983 Load: 27.3 t ADT: 45

FM

Good

Over: WEST BRANCH FLOYD RIVER

095452301, Sioux, IA

Built 1983 Load: 27.3 t ADT: 120

B62

Good

Over: SMALL

094473501, Sioux, IA

Built 1978 Load: 28.6 t ADT: 30

LOCAL

Good

Over: FLOYD RIVER

095432005, Sioux, IA

Built 1940 Load: 28.6 t ADT: 30

LOCAL

Good

Over: SMALL STREAM

097450502, Sioux, IA

Built 1986 Load: 29.0 t ADT: 34

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.