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)

NB IA 60

Unknown

Over: 450TH STREET

0.9 mi. N of jct. IA 10, Sioux, IA

Built 2003 ADT: 710

IA 60 SB

Unknown

Over: 450TH STREET

0.9 mi. N of jct. IA 10, Sioux, IA

Built 2002 ADT: 710

470TH STREET

Unknown

Over: IA 60

2.0 mi. S of Ia. 10, Sioux, IA

Built 2003 ADT: 4,060

IA 60 NB

Unknown

Over: B 58 & UPRR

1.3 mi S of jct IA 10, Sioux, IA

Built 2002 ADT: 270

IA 60 SB

Unknown

Over: B 58 & UPRR

1.3 mi. S of jct. IA 10, Sioux, IA

Built 2002 ADT: 270

IA 60 NB

Unknown

Over: IOWA 10

Over Iowa 10, Sioux, IA

Built 2002 ADT: 1,335

IA 60 SB

Unknown

Over: IOWA 10

Over Iowa 10., Sioux, IA

Built 2002 ADT: 1,335

IA 60 NB

Unknown

Over: MCKINLEY AVE

3.8 mi. S of Jct. U.S. 18, Sioux, IA

Built 2004 ADT: 800

IA 60 SB

Unknown

Over: MCKINLEY AVE

3.8 mi. S of Jct. U.S. 18, Sioux, IA

Built 2004 ADT: 800

US 18

Fair

Over: DRAINAGE DITCH

0.1 mi E of SR K18, Sioux, IA

Built 1944 Load: 15.8 t ADT: 3,040

LOCAL

Fair

Over: FLOYD RIVER

095443602, Sioux, IA

Built 1965 Load: 17.5 t ADT: 199

LOCAL

Fair

Over: SM STREAM

097470101, Sioux, IA

Built 1900 Load: 17.5 t ADT: 34

350TH ST

Fair

Over: SMALL STREAM

096441704, Sioux, IA

Built 1938 Load: 18.5 t ADT: 11

FM

Fair

Over: ROCK RIVER

096470303, Sioux, IA

Built 1961 Load: 18.8 t ADT: 159

LOCAL

Fair

Over: SIX MILE CREEK

094470502, Sioux, IA

Built 1961 Load: 19.6 t ADT: 71

LOCAL

Fair

Over: SIX MILE CREEK

095472801, Sioux, IA

Built 1964 Load: 19.6 t ADT: 34

LOCAL

Fair

Over: SMALL STREAM

094442101, Sioux, IA

Built 1936 Load: 20.5 t ADT: 71

LOCAL

Fair

Over: SMALL STREAM

094442901, Sioux, IA

Built 1936 Load: 20.5 t ADT: 34

LOCAL

Fair

Over: SMALL STREAM

094450602, Sioux, IA

Built 1938 Load: 20.5 t ADT: 30

LOCAL

Fair

Over: SMALL STREAM

094452002, Sioux, IA

Built 1977 Load: 20.5 t ADT: 30

LOCAL

Fair

Over: SMALL STREAM

094452202, Sioux, IA

Built 1934 Load: 20.5 t ADT: 20

LOCAL

Fair

Over: SMALL STREAM

094452501, Sioux, IA

Built 1936 Load: 20.5 t ADT: 11

LOCAL

Fair

Over: SMALL STREAM

094460902, Sioux, IA

Built 1954 Load: 20.5 t ADT: 11

LOCAL

Fair

Over: SMALL STREAM

094462901, Sioux, IA

Built 1974 Load: 20.5 t ADT: 40

LOCAL

Fair

Over: SMALL STREAM

094470302, Sioux, IA

Built 1977 Load: 20.5 t ADT: 34

LOCAL

Fair

Over: SMALL STREAM

094472601, Sioux, IA

Built 1969 Load: 20.5 t ADT: 34

LOCAL

Fair

Over: SMALL

095430101, Sioux, IA

Built 1978 Load: 20.5 t ADT: 34

FM

Fair

Over: SMALL STREAM

095433301, Sioux, IA

Built 1983 Load: 20.5 t ADT: 26

LOCAL

Fair

Over: SMALL STREAM

095443001, Sioux, IA

Built 1978 Load: 20.5 t ADT: 60

LOCAL

Fair

Over: STREAM

095461902, Sioux, IA

Built 1981 Load: 20.5 t ADT: 20

LOCAL

Fair

Over: SMALL STREAM

095462102, Sioux, IA

Built 1939 Load: 20.5 t ADT: 34

LOCAL

Fair

Over: SMALL STREAM

095462802, Sioux, IA

Built 1977 Load: 20.5 t ADT: 34

LOCAL

Fair

Over: SMALL STREAM

095470801, Sioux, IA

Built 1997 Load: 20.5 t ADT: 11

LOCAL

Fair

Over: DRY CREEK

095470802, Sioux, IA

Built 1938 Load: 20.5 t ADT: 11

LOCAL

Fair

Over: SMALL STREAM

095472302, Sioux, IA

Built 1938 Load: 20.5 t ADT: 26

LOCAL

Fair

Over: SIX MILE CREEK

095473001, Sioux, IA

Built 1979 Load: 20.5 t ADT: 26

LOCAL

Fair

Over: SIX MILE CREEK

095473201, Sioux, IA

Built 1979 Load: 20.5 t ADT: 50

LOCAL

Fair

Over: SMALL

096430201, Sioux, IA

Built 1978 Load: 20.5 t ADT: 50

LOCAL

Fair

Over: FLOYD RIVER

096432701, Sioux, IA

Built 1979 Load: 20.5 t ADT: 20

LOCAL

Fair

Over: SMALL

096432902, Sioux, IA

Built 1978 Load: 20.5 t ADT: 15

LOCAL

Fair

Over: SMALL

096440301, Sioux, IA

Built 1979 Load: 20.5 t ADT: 30

LOCAL

Fair

Over: SMALL

096440601, Sioux, IA

Built 1979 Load: 20.5 t ADT: 40

LOCAL

Fair

Over: SMALL STREAM

096453001, Sioux, IA

Built 1947 Load: 20.5 t ADT: 71

LOCAL

Fair

Over: SMALL STREAM

096461501, Sioux, IA

Built 1977 Load: 20.5 t ADT: 34

LOCAL

Fair

Over: SMALL STREAM

096461502, Sioux, IA

Built 1980 Load: 20.5 t ADT: 100

LOCAL

Fair

Over: SMALL STREAM

096463501, Sioux, IA

Built 1938 Load: 20.5 t ADT: 120

LOCAL

Fair

Over: SMALL

096470202, Sioux, IA

Built 1979 Load: 20.5 t ADT: 30

LOCAL

Fair

Over: NO NAME CREEK

096470203, Sioux, IA

Built 1977 Load: 20.5 t ADT: 20

LOCAL

Fair

Over: DRY CREEK

096472501, Sioux, IA

Built 1966 Load: 20.5 t ADT: 40

LOCAL

Fair

Over: SMALL

097450602, Sioux, IA

Built 1941 Load: 20.5 t ADT: 34

Read our methodology - how this data is sourced, computed, and verified.

Related

Browse all → | Rankings →
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.