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)

FM

Good

Over: SMALL STREAM

094442102, Sioux, IA

Built 1985 Load: 29.8 t ADT: 2,539

62

Good

Over: WILLOW CREEK

094443601, Sioux, IA

Built 1984 Load: 29.8 t ADT: 31

LOCAL

Good

Over: SIX MILE CREEK

095472802, Sioux, IA

Built 1984 Load: 29.8 t ADT: 20

K64

Good

Over: SMALL STREAM

096440804, Sioux, IA

Built 1984 Load: 29.8 t ADT: 1,277

FM

Good

Over: DRY CREEK

096472502, Sioux, IA

Built 1982 Load: 29.8 t ADT: 60

LOCAL

Good

Over: NO NAME CREEK

096473405, Sioux, IA

Built 1982 Load: 29.8 t ADT: 60

FM

Good

Over: WILLOW CR

094431702, Sioux, IA

Built 1973 Load: 30.0 t ADT: 722

FM

Good

Over: SPRING CREEK

094470202, Sioux, IA

Built 1974 Load: 30.0 t ADT: 748

FM

Good

Over: NO NAME CREEK

096471702, Sioux, IA

Built 1971 Load: 30.0 t ADT: 718

LOCAL

Good

Over: WEST BRANCH FLOYD RIVER

095451401, Sioux, IA

Built 1983 Load: 30.2 t ADT: 34

FM

Good

Over: SIXMILE CREEK

095462002, Sioux, IA

Built 1973 Load: 30.2 t ADT: 957

FM

Good

Over: DRY CREEK

096473402, Sioux, IA

Built 1973 Load: 30.2 t ADT: 529

FM

Good

Over: BURR OAK CREEK

097460104, Sioux, IA

Built 1973 Load: 30.2 t ADT: 1,087

LOCAL

Good

Over: BRANCH OF ROCK RIVER

097472301, Sioux, IA

Built 1983 Load: 30.2 t ADT: 131

K64

Good

Over: FLOYD RIVER

094443302, Sioux, IA

Built 1975 Load: 30.4 t ADT: 995

FM

Good

Over: W BRANCH FLOYD RIVER

094453201, Sioux, IA

Built 1977 Load: 30.4 t ADT: 71

IA 10

Good

Over: SIX MILE CREEK

1.7 mi. W of W jct SR K22, Sioux, IA

Built 1987 Load: 31.5 t ADT: 2,210

LOCAL

Good

Over: SMALL STREAM

094433001, Sioux, IA

Built 1996 Load: 32.3 t ADT: 11

IA 12

Good

Over: SIX MILE CREEK

2.1 mi. N of SR C12, Sioux, IA

Built 2013 Load: 32.4 t ADT: 1,120

LOCAL

Good

Over: SMALL STREAM

095452903, Sioux, IA

Built 1998 Load: 32.4 t ADT: 45

IA 10

Good

Over: WILLOW CREEK

0.8 mi. E of SR L14, Sioux, IA

Built 2008 Load: 32.5 t ADT: 1,980

FM

Good

Over: NO NAME

094432002, Sioux, IA

Built 1974 Load: 33.0 t ADT: 722

L22

Good

Over: WILLOW CREEK

095432602, Sioux, IA

Built 1955 Load: 33.0 t ADT: 359

FM

Good

Over: CREEK

095443501, Sioux, IA

Built 1968 Load: 33.0 t ADT: 71

FM

Good

Over: NO NAME

095462101, Sioux, IA

Built 1974 Load: 33.0 t ADT: 898

FM

Good

Over: NO NAME CREEK

095471502, Sioux, IA

Built 1973 Load: 33.0 t ADT: 369

LOCAL

Good

Over: SMALL STREAM

097452703, Sioux, IA

Built 1960 Load: 33.0 t ADT: 1,117

FM

Good

Over: SMALL CREEK

097472902, Sioux, IA

Built 1976 Load: 33.0 t ADT: 718

FM

Good

Over: SIX MILE CREEK

096462502, Sioux, IA

Built 1982 Load: 33.4 t ADT: 1,337

IA 60 SB

Good

Over: WILLOW CREEK

0.7 mi. N of Jct. SR B40, Sioux, IA

Built 2003 Load: 33.6 t ADT: 2,485

IA 60 NB

Good

Over: WILLOW CREEK

0.7 mi. N of Jct. SR B40, Sioux, IA

Built 2003 Load: 33.6 t ADT: 2,485

370TH ST

Good

Over: NO NAME CREEK

096452701, Sioux, IA

Built 1965 Load: 33.7 t ADT: 988

FM

Good

Over: STREAM

096471101, Sioux, IA

Built 1960 Load: 33.7 t ADT: 210

L 22

Good

Over: SMALL

097433402, Sioux, IA

Built 2004 Load: 33.7 t ADT: 270

L14 KINGBIRD AVE

Good

Over: NO NAME CREEK

096431802, Sioux, IA

Built 2016 Load: 34.0 t ADT: 578

FM

Good

Over: NO NAME CREEK

097431101, Sioux, IA

Built 1965 Load: 34.0 t ADT: 609

LOCAL

Good

Over: SMALL

094471802, Sioux, IA

Built 1960 Load: 34.0 t ADT: 11

LILY AVE

Good

Over: SMALL

096432202, Sioux, IA

Built 2008 Load: 34.0 t ADT: 270

KINGBIRD AVE

Good

Over: SMALL

096433002, Sioux, IA

Built 2010 Load: 34.0 t ADT: 578

LOCAL

Good

Over: SM STREAM

097461201, Sioux, IA

Built 1931 Load: 34.1 t ADT: 61

L22

Good

Over: SMALL STREAM

094430202, Sioux, IA

Built 1955 Load: 34.3 t ADT: 366

FM

Good

Over: CREEK

095440801, Sioux, IA

Built 1965 Load: 34.3 t ADT: 2,992

FM

Good

Over: CREEK

095460201, Sioux, IA

Built 1977 Load: 34.3 t ADT: 1,926

LOCAL

Good

Over: SMALL

097440901, Sioux, IA

Built 1978 Load: 34.3 t ADT: 80

LARCH AVE

Good

Over: SMALL

096432102, Sioux, IA

Built 1954 Load: 34.3 t ADT: 20

K52

Good

Over: SMALL STREAM

096452602, Sioux, IA

Built 1978 Load: 34.7 t ADT: 1,257

LOCAL

Good

Over: SM STREAM

097450201, Sioux, IA

Built 2005 Load: 34.7 t ADT: 71

IA 60 NB

Good

Over: LITTLE FLOYD RIVER

0.4 mi. S of Jct. SR L26, Sioux, IA

Built 2005 Load: 35.1 t ADT: 3,250

IA 60 SB

Good

Over: LITTLE FLOYD RIVER

0.4 mi. S of SR L26, Sioux, IA

Built 2006 Load: 35.1 t ADT: 3,250

L 14

Good

Over: OTTER CREEK

097440102, Sioux, IA

Built 1991 Load: 35.2 t ADT: 1,267

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.