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: NO NAME CREEK

096433201, Sioux, IA

Built 2011 Load: 99.9 t ADT: 20

LARCH AVE

Good

Over: SMALL CREEK

South 2,910, Sioux, IA

Built 2015 Load: 99.9 t ADT: 20

LOCAL

Good

Over: SMALL STREAM

096433302, Sioux, IA

Built 1986 Load: 99.9 t ADT: 20

330TH ST

Good

Over: UNNAMED CREEK

096440401, Sioux, IA

Built 2022 Load: 99.9 t ADT: 11

FM

Good

Over: NO NAME CREEK

096441101, Sioux, IA

Built 1992 Load: 99.9 t ADT: 25

LOCAL

Good

Over: SMALL STREAM

096441302, Sioux, IA

Built 1991 Load: 99.9 t ADT: 50

LOCAL

Good

Over: SMALL STREAM

096441401, Sioux, IA

Built 1990 Load: 99.9 t ADT: 50

LOCAL

Good

Over: SMALL STREAM

096441601, Sioux, IA

Built 2002 Load: 99.9 t ADT: 30

LOCAL

Good

Over: SMALL STREAM

096441901, Sioux, IA

Built 1994 Load: 99.9 t ADT: 26

LOCAL

Good

Over: SMALL

096442101, Sioux, IA

Built 2011 Load: 99.9 t ADT: 50

JAY AVE

Good

Over: SMALL STREAM

096442202, Sioux, IA

Built 2014 Load: 99.9 t ADT: 20

LOCAL

Good

Over: SMALL STREAM

096451202, Sioux, IA

Built 2010 Load: 99.9 t ADT: 45

350TH AVE

Good

Over: SMALL CREEK

096451301, Sioux, IA

Built 2013 Load: 99.9 t ADT: 30

LOCAL

Good

Over: SMALL

096453002, Sioux, IA

Built 2010 Load: 99.9 t ADT: 110

LOCAL

Good

Over: SMALL

096453002, Sioux, IA

Built 1978 Load: 99.9 t ADT: 110

380TH ST

Good

Over: SMALL STREAM

096453101, Sioux, IA

Built 2000 Load: 99.9 t ADT: 359

LOCAL

Good

Over: SMALL

096460602, Sioux, IA

Built 2011 Load: 99.9 t ADT: 40

LOCAL

Good

Over: STREAM

096460802, Sioux, IA

Built 1996 Load: 99.9 t ADT: 50

FM

Good

Over: NO NAME CREEK

096470303, Sioux, IA

Built 1993 Load: 99.9 t ADT: 159

LOCAL

Good

Over: SMALL STREAM

096472501, Sioux, IA

Built 1992 Load: 99.9 t ADT: 40

LOCAL

Good

Over: SMALL STREAM

097431802, Sioux, IA

Built 1998 Load: 99.9 t ADT: 11

LARCH AVE

Good

Over: STREAM

097433302, Sioux, IA

Built 2012 Load: 99.9 t ADT: 71

LOCAL

Good

Over: SM STREAM

097442602, Sioux, IA

Built 2001 Load: 99.9 t ADT: 80

LOCAL

Good

Over: SMALL STREAM

097442902, Sioux, IA

Built 1995 Load: 99.9 t ADT: 71

INDIAN AVE

Good

Over: NO NAME CREEK

097443102, Sioux, IA

Built 2016 Load: 99.9 t ADT: 45

LOCAL

Good

Over: SMALL

W of 35 Sheridan, Sioux, IA

Built 2009 Load: 99.9 t ADT: 60

FM

Good

Over: DRY CREEK

097451501, Sioux, IA

Built 2010 Load: 99.9 t ADT: 34

LOCAL

Good

Over: SMALL

097452201, Sioux, IA

Built 2003 Load: 99.9 t ADT: 45

LOCAL

Good

Over: SM STREAM

097452402, Sioux, IA

Built 1997 Load: 99.9 t ADT: 60

FM

Good

Over: SM STREAM

097453504, Sioux, IA

Built 1933 Load: 99.9 t ADT: 1,416

LOCAL

Good

Over: SM STREAM

097453602, Sioux, IA

Built 2001 Load: 99.9 t ADT: 100

K 20 (270TH ST)

Good

Over: NO NAME CREEK

097470301, Sioux, IA

Built 2013 Load: 99.9 t ADT: 34

LOCAL

Good

Over: SMALL STREAM

097470302, Sioux, IA

Built 1986 Load: 99.9 t ADT: 40

LOCAL

Good

Over: SMALL STREAM

097470801, Sioux, IA

Built 1985 Load: 99.9 t ADT: 50

LOCAL

Good

Over: SM STREAM

097470902, Sioux, IA

Built 1997 Load: 99.9 t ADT: 20

LOCAL

Good

Over: SMALL STREAM

097471002, Sioux, IA

Built 1984 Load: 99.9 t ADT: 50

LOCAL

Good

Over: SMALL STREAM

097471501, Sioux, IA

Built 1984 Load: 99.9 t ADT: 40

LOCAL

Good

Over: SM STREAM

097471902, Sioux, IA

Built 2002 Load: 99.9 t ADT: 40

FM

Good

Over: NO NAME CREEK

097473001, Sioux, IA

Built 1988 Load: 99.9 t ADT: 159

LOCAL

Good

Over: STREAM

097482403, Sioux, IA

Built 1985 Load: 99.9 t ADT: 110

LOCAL

Good

Over: SMALL STREAM

094472702, Sioux, IA

Built 1998 Load: 99.9 t ADT: 40

LOCAL

Good

Over: SMALL STREAM

094430104, Sioux, IA

Built 2001 Load: 99.9 t ADT: 122

LOCAL

Good

Over: SMALL

094440602, Sioux, IA

Built 1984 Load: 99.9 t ADT: 30

LOCAL

Good

Over: SMALL

094452201, Sioux, IA

Built 1996 Load: 99.9 t ADT: 40

LOCAL

Good

Over: SMALL

094462201, Sioux, IA

Built 1986 Load: 99.9 t ADT: 15

LOCAL

Good

Over: SMALL

094462302, Sioux, IA

Built 1986 Load: 99.9 t ADT: 60

B 62

Good

Over: SMALL

094483401, Sioux, IA

Built 2003 Load: 99.9 t ADT: 34

LOCAL

Good

Over: SMALL

095453101, Sioux, IA

Built 1974 Load: 99.9 t ADT: 50

LOCAL

Good

Over: SMALL

095473301, Sioux, IA

Built 1977 Load: 99.9 t ADT: 45

LOCAL

Good

Over: SMALL

095432601, Sioux, IA

Built 1987 Load: 99.9 t ADT: 40

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