Sioux County, IA

429 public highway bridges

Sioux County Bridge Snapshot

Sioux County, Iowa contains 429 public highway bridges in the FHWA National Bridge Inventory. Roughly 61.5% are rated “Good,” 34% “Fair,” 2.3% “Poor,” and 2.3% are classified as structurally deficient — the federal designation for spans whose deck, superstructure, or substructure has been rated 4 or below on the 0–9 NBI scale. Structurally deficient does not mean unsafe to cross; it means the bridge is on the priority list for repair or replacement.

Inspections in IA are conducted by certified engineers from the state Department of Transportation on a 24-month cycle, and results are reported back to the FHWA each spring. The list below shows every NBI-tracked bridge in the county, sorted by inventory load rating. Use the “Sort by” controls to surface the lowest-rated spans first, and click any row for full inspection history, traffic counts, and condition trends.

Source: FHWA National Bridge Inventory. See methodology for full definitions.

429
Total Bridges
61.5%
Good
2.3%
Poor
2.3%
Structurally Deficient

Condition Distribution

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

Related

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Data sourced from official U.S. government datasets. See our methodology for details. Retrieved and formatted by PlainBridges Editorial