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)

Sort:

LOCAL

Over: SM STREAM

097450901, Sioux, IA

Built 1933 Load: 20.5 t ADT: 50

LOCAL

Over: SMALL STREAM

097451002, Sioux, IA

Built 1981 Load: 20.5 t ADT: 60

LOCAL

Over: SM STREAM

097451502, Sioux, IA

Built 1977 Load: 20.5 t ADT: 40

LOCAL

Over: SMALL

097461201, Sioux, IA

Built 1978 Load: 20.5 t ADT: 60

LOCAL

Over: SM STREAM

097462602, Sioux, IA

Built 1977 Load: 20.5 t ADT: 120

FM

Over: DRY RUN

097471201, Sioux, IA

Built 1977 Load: 20.5 t ADT: 71

LOCAL

Over: SMALL STREAM

097471302, Sioux, IA

Built 1900 Load: 20.5 t ADT: 110

LOCAL

Over: SMALL

097473201, Sioux, IA

Built 1995 Load: 20.5 t ADT: 15

LOCAL

Over: FLOYD RIVER

094441404, Sioux, IA

Built 1962 Load: 20.7 t ADT: 60

LOCAL

Over: FLOYD RIVER

094442203, Sioux, IA

Built 1963 Load: 20.7 t ADT: 30

LOCAL

Over: SMALL STREAM

095452601, Sioux, IA

Built 1954 Load: 21.1 t ADT: 50

LOCAL

Over: OTTER CR

097430702, Sioux, IA

Built 1963 Load: 21.2 t ADT: 11

FM

Over: OTTER CREEK

097430801, Sioux, IA

Built 1962 Load: 21.2 t ADT: 619

LOCAL

Over: OTTER CREEK

097430802, Sioux, IA

Built 1962 Load: 21.2 t ADT: 45

FM

Over: OTTER CREEK

097441201, Sioux, IA

Built 1962 Load: 21.2 t ADT: 619

LOCAL

Over: WEST BRANCH

094452001, Sioux, IA

Built 1938 Load: 22.0 t ADT: 26

IA 60 NB

Over: FLOYD RIVER TRIBUTARY

0.5 mi. S of SR K64, Sioux, IA

Built 1932 Load: 22.9 t ADT: 3,200

LOCAL

Over: SMALL STREAM

094463002, Sioux, IA

Built 1938 Load: 22.9 t ADT: 15

LOCAL

Over: CREEK

095462202, Sioux, IA

Built 1962 Load: 23.0 t ADT: 45

LOCAL

Over: SMALL STREAM

095462801, Sioux, IA

Built 1962 Load: 23.0 t ADT: 40

LOCAL

Over: SMALL STREAM

095443602, Sioux, IA

Built 1965 Load: 24.0 t ADT: 199

LOCAL

Over: SMALL STREAM

095471402, Sioux, IA

Built 1963 Load: 24.0 t ADT: 5

LOCAL

Over: SMALL STREAM

096432701, Sioux, IA

Built 1965 Load: 24.0 t ADT: 20

FM

Over: DRY CREEK

096450701, Sioux, IA

Built 1965 Load: 24.0 t ADT: 60

LOCAL

Over: FLOYD RIV

096431401, Sioux, IA

Built 1954 Load: 24.6 t ADT: 50

FM

Over: OTTER CREEK 2ND CHANNEL

097441201, Sioux, IA

Built 1962 Load: 24.6 t ADT: 619

LOCAL

Over: WEST BRANCH

094452901, Sioux, IA

Built 1984 Load: 25.1 t ADT: 30

LOCAL

Over: FLOYD RIVER

096432701, Sioux, IA

Built 1979 Load: 25.3 t ADT: 20

LOCAL

Over: SM STREAM

097430902, Sioux, IA

Built 1960 Load: 25.3 t ADT: 71

US 18

Over: WEST FORK FLOYD RIVER

2.0 mi. E of Jct. SR K64, Sioux, IA

Built 1976 Load: 25.6 t ADT: 5,200

FM

Over: W BRANCH FLOYD RIVER

094451701, Sioux, IA

Built 1942 Load: 25.9 t ADT: 548

LOCAL

Over: SMALL STREAM

094450802, Sioux, IA

Built 1969 Load: 26.6 t ADT: 40

FM

Over: ORANGE CITY SLOUGH

094451202, Sioux, IA

Built 1969 Load: 26.6 t ADT: 51

FM

Over: NO NAME CREEK

094473502, Sioux, IA

Built 1967 Load: 26.6 t ADT: 649

FM

Over: NO NAME CREEK

096440904, Sioux, IA

Built 1965 Load: 26.6 t ADT: 1,277

FM

Over: NO NAME CREEK

097433402, Sioux, IA

Built 1968 Load: 26.6 t ADT: 270

LOCAL

Over: FLOYD RIVER

094442803, Sioux, IA

Built 1966 Load: 26.8 t ADT: 26

IA 10

Over: ORANGE CITY SLOUGH

4.5 mi. E of US 75, Sioux, IA

Built 1977 Load: 26.9 t ADT: 4,060

FM

Over: WEST BRANCH

096443001, Sioux, IA

Built 1963 Load: 26.9 t ADT: 738

US 18

Over: FLOYD RIVER

0.2 W of Jct. SR L26, Sioux, IA

Built 1992 Load: 27.1 t ADT: 5,100

LOCAL

Over: WEST BRANCH

095452702, Sioux, IA

Built 1950 Load: 27.5 t ADT: 100

ALBANY AVE.N

Over: ORANGE CITY SLOUGH

095442804, Sioux, IA

Built 1973 Load: 27.9 t ADT: 3,610

LOCAL

Over: FLOYD RIVER

096433401, Sioux, IA

Built 1983 Load: 28.2 t ADT: 26

LOCAL

Over: OVER ABAND RR

094470802, Sioux, IA

Built 1963 Load: 28.8 t ADT: 34

LOCAL

Over: SMALL STREAM

094430401, Sioux, IA

Built 1960 Load: 29.5 t ADT: 50

FM

Over: ROCK RIVER OVERFLOW

097462102, Sioux, IA

Built 1950 Load: 29.8 t ADT: 2,963

FM

Over: SIXMILE CREEK

095460301, Sioux, IA

Built 1972 Load: 30.0 t ADT: 1,926

LOCAL

Over: W FORK FLOYD RIV

095453303, Sioux, IA

Built 1969 Load: 30.1 t ADT: 131

FM

Over: BURR OAK CREEK

097451402, Sioux, IA

Built 1967 Load: 30.1 t ADT: 1,097

B40

Over: FLOYD RIVER

095431001, Sioux, IA

Built 1977 Load: 30.4 t ADT: 1,795

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

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Compiled by PlainBridges, Independent data publisher

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.