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)

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