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:

FM

Over: DRY CREEK

096462102, Sioux, IA

Built 1967 Load: 30.4 t ADT: 1,077

L14

Over: FLOYD RIVER

095433004, Sioux, IA

Built 1969 Load: 30.5 t ADT: 578

FM

Over: FLOYD RIVER

096430103, Sioux, IA

Built 1968 Load: 30.5 t ADT: 679

LOCAL

Over: SMALL STREAM

094440602, Sioux, IA

Built 1965 Load: 30.8 t ADT: 30

FM

Over: INDIAN CREEK

094473401, Sioux, IA

Built 1984 Load: 30.8 t ADT: 90

LOCAL

Over: NO NAME CR

097461402, Sioux, IA

Built 1973 Load: 30.8 t ADT: 71

LOCAL

Over: ROGG CR

097461401, Sioux, IA

Built 1969 Load: 31.4 t ADT: 71

LOCAL

Over: SMALL STREAM

097461401, Sioux, IA

Built 1973 Load: 31.4 t ADT: 71

FM

Over: DRY CREEK

095470401, Sioux, IA

Built 1964 Load: 32.7 t ADT: 419

FM

Over: NO NAME CREEK

097463002, Sioux, IA

Built 1964 Load: 32.7 t ADT: 369

IA 10

Over: BIG SIOUX RIVER

At S Dakota St. Line, Sioux, IA

Built 1991 Load: 33.3 t ADT: 1,910

FM

Over: W FORK FLOYD RIVER

095451201, Sioux, IA

Built 1967 Load: 33.7 t ADT: 2,992

FM

Over: DRY CREEK

095471901, Sioux, IA

Built 1966 Load: 33.7 t ADT: 538

LOCAL

Over: SMALL STREAM

095463201, Sioux, IA

Built 1959 Load: 34.0 t ADT: 50

FM

Over: SMALL

095451201, Sioux, IA

Built 1900 Load: 34.0 t ADT: 2,992

FM

Over: SMALL STREAM

095431103, Sioux, IA

Built 1984 Load: 34.3 t ADT: 1,147

K64

Over: UNNAMED CREEK

095440402, Sioux, IA

Built 1900 Load: 34.7 t ADT: 1,117

BIRCH AVE

Over: BIG SIOUX RIVER

097481404, Sioux, IA

Built 1966 Load: 34.7 t ADT: 450

LOCAL

Over: SMALL

096460701, Sioux, IA

Built 1954 Load: 35.0 t ADT: 110

FM

Over: NO NAME CREEK

096433404, Sioux, IA

Built 1966 Load: 35.3 t ADT: 270

FM

Over: NO NAME CREEK

097481501, Sioux, IA

Built 1966 Load: 35.3 t ADT: 789

10TH ST

Over: BIG SIOUX RIVER

000000000, Sioux, IA

Built 1980 Load: 36.9 t ADT: 670

COUNTY RD

Over: WILLOW CREEK

095430310, Sioux, IA

Built 1991 Load: 37.7 t ADT: 1,347

IA 10

Over: STREAM

0.4 mi. W of jct. US 75, Sioux, IA

Built 1989 Load: 37.9 t ADT: 1,900

IA 10

Over: DRY CREEK

0.4 mi W of IA 12, Sioux, IA

Built 1955 Load: 38.1 t ADT: 2,800

L14

Over: SMALL STREAM

094432902, Sioux, IA

Built 1954 Load: 39.2 t ADT: 722

FM

Over: ROCK RIVER

095470603, Sioux, IA

Built 1969 Load: 39.9 t ADT: 139

LOCAL

Over: SMALL

096471804, Sioux, IA

Built 1978 Load: 42.1 t ADT: 30

FM

Over: BIG SIOUX RIVER

096471803, Sioux, IA

Built 2009 Load: 46.0 t ADT: 1,277

IA 10

Over: OVER UP RR

1.0 mi W of Ia. 60, Sioux, IA

Built 1983 Load: 48.0 t ADT: 4,260

IA 60 SB

Over: FLOYD RIVER TRIBUTARY

0.5 mi S of SR K64, Sioux, IA

Built 2003 Load: 49.4 t ADT: 3,200

CHERRY AVE

Over: SMALL STREAM

094471902, Sioux, IA

Built 2000 Load: 99.9 t ADT: 20

LOCAL

Over: SMALL STREAM

094473602, Sioux, IA

Built 1984 Load: 99.9 t ADT: 11

LOCAL

Over: SMALL STREAM

095430501, Sioux, IA

Built 1999 Load: 99.9 t ADT: 15

LOCAL

Over: SMALL

095430502, Sioux, IA

Built 1993 Load: 99.9 t ADT: 26

LOCAL

Over: SMALL STREAM

095470202, Sioux, IA

Built 1934 Load: 99.9 t ADT: 11

LOCAL

Over: STREAM

096432102, Sioux, IA

Built 1993 Load: 99.9 t ADT: 20

LOCAL

Over: NO NAME CREEK

096433301, Sioux, IA

Built 1992 Load: 99.9 t ADT: 20

360TH ST

Over: SMALL STREAM

096452101, Sioux, IA

Built 2000 Load: 99.9 t ADT: 80

LOCAL

Over: SMALL STREAM

096452202, Sioux, IA

Built 2001 Load: 99.9 t ADT: 34

LOCAL

Over: SMALL

097431702, Sioux, IA

Built 1985 Load: 99.9 t ADT: 30

B 14

Over: SMALL STREAM

097451801, Sioux, IA

Built 1990 Load: 99.9 t ADT: 26

LOCAL

Over: SM STREAM

097460702, Sioux, IA

Built 1994 Load: 99.9 t ADT: 11

FM

Over: SMALL STREAM

094433601, Sioux, IA

Built 1986 Load: 99.9 t ADT: 61

FM

Over: ORANGE CITY SLOUGH

095442101, Sioux, IA

Built 1992 Load: 99.9 t ADT: 60

LOCAL

Over: STREAM

094432202, Sioux, IA

Built 1993 Load: 99.9 t ADT: 15

LOCAL

Over: SMALL STREAM

095433402, Sioux, IA

Built 1994 Load: 99.9 t ADT: 11

LILY AVE

Over: STREAM

094431002, Sioux, IA

Built 2000 Load: 99.9 t ADT: 41

LOCAL

Over: SMALL

094432401, Sioux, IA

Built 1985 Load: 99.9 t ADT: 15

LOCAL

Over: SMALL

094473401, Sioux, IA

Built 1988 Load: 99.9 t ADT: 90

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.