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

Good

Over: SMALL STREAM

094431901, Sioux, IA

Built 2002 Load: 48.2 t ADT: 35

FM

Good

Over: DEEP CREEK

094432504, Sioux, IA

Built 1998 Load: 48.2 t ADT: 345

FM

Good

Over: NO NAME CREEK

096470801, Sioux, IA

Built 1990 Load: 48.2 t ADT: 80

K 30 EAGLE AVE

Good

Over: SMALL STREAM

094462902, Sioux, IA

Built 2019 Load: 49.2 t ADT: 638

US 18

Good

Over: DRY RUN CREEK

1.7 mi. W of S.R. K24, Sioux, IA

Built 2007 Load: 49.4 t ADT: 3,040

MARSH AVE

Good

Over: SMALL STREAM

095431202, Sioux, IA

Built 2017 Load: 49.9 t ADT: 30

FM

Good

Over: ORANGE CITY SLOUGH

094451501, Sioux, IA

Built 2002 Load: 50.0 t ADT: 823

LOCAL

Good

Over: W BRANCH

095450101, Sioux, IA

Built 1990 Load: 50.0 t ADT: 40

LOCAL

Good

Over: WEST BRANCH

096443101, Sioux, IA

Built 2007 Load: 50.0 t ADT: 20

LOCAL

Good

Over: W BR FLOYD RIVER

096443102, Sioux, IA

Built 2004 Load: 50.0 t ADT: 60

LOCAL

Good

Over: SMALL STREAM

096462002, Sioux, IA

Built 1995 Load: 50.0 t ADT: 90

FM

Good

Over: DRY CREEK

096462101, Sioux, IA

Built 2004 Load: 50.0 t ADT: 857

LOCAL

Good

Over: SMALL STREAM

097471501, Sioux, IA

Built 1988 Load: 50.0 t ADT: 40

LOCAL

Good

Over: SIX MILE CREEK

095472402, Sioux, IA

Built 2003 Load: 52.9 t ADT: 45

360TH ST

Good

Over: WEST BRANCH

096441901, Sioux, IA

Built 2000 Load: 52.9 t ADT: 26

L 14

Good

Over: OTTER CREEK OVERFLOW

097440102, Sioux, IA

Built 1991 Load: 52.9 t ADT: 1,267

US 75

Good

Over: STREAM

1.3 mi N of jct IA 10, Sioux, IA

Built 1998 Load: 61.8 t ADT: 7,300

LOCAL

Good

Over: SMALL STREAM

094432102, Sioux, IA

Built 2003 Load: 99.9 t ADT: 15

LOCAL

Good

Over: SMALL STREAM

094432501, Sioux, IA

Built 2002 Load: 99.9 t ADT: 40

LOCAL

Good

Over: SMALL STREAM

094432601, Sioux, IA

Built 1990 Load: 99.9 t ADT: 5

LOCAL

Good

Over: SMALL CREEK

094440202, Sioux, IA

Built 1985 Load: 99.9 t ADT: 1,100

L12

Good

Over: NO NAME CREEK

094441206, Sioux, IA

Built 1982 Load: 99.9 t ADT: 133

LOCAL

Good

Over: SMALL STREAM

094442701, Sioux, IA

Built 1999 Load: 99.9 t ADT: 15

FM

Good

Over: CREEK

094452502, Sioux, IA

Built 1985 Load: 99.9 t ADT: 34

LOCAL

Good

Over: SMALL STREAM

094452602, Sioux, IA

Built 1984 Load: 99.9 t ADT: 20

LOCAL

Good

Over: SMALL STREAM

094460704, Sioux, IA

Built 2001 Load: 99.9 t ADT: 45

K42

Good

Over: SMALL STREAM

094462402, Sioux, IA

Built 2005 Load: 99.9 t ADT: 30

B58

Good

Over: SMALL STREAM

094471801, Sioux, IA

Built 1996 Load: 99.9 t ADT: 60

LOCAL

Good

Over: SMALL STREAM

094472401, Sioux, IA

Built 1988 Load: 99.9 t ADT: 30

LOCAL

Good

Over: CREEK

095431901, Sioux, IA

Built 1997 Load: 99.9 t ADT: 60

LILY AVE

Good

Over: SMALL STREAM

095432702, Sioux, IA

Built 2013 Load: 99.9 t ADT: 50

LOCAL

Good

Over: SMALL STREAM

095433001, Sioux, IA

Built 2011 Load: 99.9 t ADT: 34

LOCAL

Good

Over: SMALL

095440301, Sioux, IA

Built 2009 Load: 99.9 t ADT: 80

LOCAL

Good

Over: CREEK

095440602, Sioux, IA

Built 1990 Load: 99.9 t ADT: 100

LOCAL

Good

Over: STREAM

095441502, Sioux, IA

Built 1994 Load: 99.9 t ADT: 60

LOCAL

Good

Over: SMALL STREAM

095442801, Sioux, IA

Built 1999 Load: 99.9 t ADT: 90

410TH ST

Good

Over: SMALL STREAM

095451501, Sioux, IA

Built 2007 Load: 99.9 t ADT: 159

LOCAL

Good

Over: SMALL STREAM

095451702, Sioux, IA

Built 1985 Load: 99.9 t ADT: 120

LOCAL

Good

Over: SMALL STREAM

095452702, Sioux, IA

Built 1995 Load: 99.9 t ADT: 100

LOCAL

Good

Over: SMALL STREAM

095453202, Sioux, IA

Built 2003 Load: 99.9 t ADT: 60

LOCAL

Good

Over: CREEK

095461002, Sioux, IA

Built 1994 Load: 99.9 t ADT: 50

LOCAL

Good

Over: SMALL

095461402, Sioux, IA

Built 2004 Load: 99.9 t ADT: 34

FIG AVE

Good

Over: CREEK

095461502, Sioux, IA

Built 2018 Load: 99.9 t ADT: 40

LOCAL

Good

Over: SMALL STREAM

095462302, Sioux, IA

Built 1997 Load: 99.9 t ADT: 60

LOCAL

Good

Over: NO NAME CREEK

095470102, Sioux, IA

Built 1998 Load: 99.9 t ADT: 45

LOCAL

Good

Over: SMALL STREAM

095471001, Sioux, IA

Built 1988 Load: 99.9 t ADT: 30

LOCAL

Good

Over: SIX MILE CREEK

095471501, Sioux, IA

Built 1989 Load: 99.9 t ADT: 5

LOCAL

Good

Over: SMALL

096432802, Sioux, IA

Built 2007 Load: 99.9 t ADT: 20

FM

Good

Over: SMALL

096432901, Sioux, IA

Built 2003 Load: 99.9 t ADT: 40

370TH ST

Good

Over: SMALL STREAM

096433001, Sioux, IA

Built 2012 Load: 99.9 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.