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

096470202, Sioux, IA

Built 1983 Load: 99.9 t ADT: 31

LOCAL

Good

Over: SMALL

094441701, Sioux, IA

Built 1977 Load: 99.9 t ADT: 808

LOCAL

Good

Over: SMALL

094460102, Sioux, IA

Built 1977 Load: 99.9 t ADT: 34

LOCAL

Good

Over: SMALL

094460102, Sioux, IA

Built 1977 Load: 99.9 t ADT: 34

K42

Good

Over: SMALL

094462402, Sioux, IA

Built 2005 Load: 99.9 t ADT: 30

470TH ST

Good

Over: SMALL

094471701, Sioux, IA

Built 1997 Load: 99.9 t ADT: 60

LOCAL

Good

Over: SMALL

095472201, Sioux, IA

Built 1976 Load: 99.9 t ADT: 569

LOCAL

Good

Over: SMALL

096472402, Sioux, IA

Built 2004 Load: 99.9 t ADT: 60

LOCAL

Good

Over: SMALL

095460102, Sioux, IA

Built 2006 Load: 99.9 t ADT: 1,236

MARSH AVE

Good

Over: SMALL

095432402, Sioux, IA

Built 2008 Load: 99.9 t ADT: 26

LOCAL

Good

Over: SMALL

095432501, Sioux, IA

Built 2008 Load: 99.9 t ADT: 26

GRANT AVE

Good

Over: CREEK

096450802, Sioux, IA

Built 2012 Load: 99.9 t ADT: 34

350TH ST

Good

Over: SM STREAM

096431801, Sioux, IA

Built 2013 Load: 99.9 t ADT: 45

HARRISON AVE

Good

Over: SMALL STREAM

097452202, Sioux, IA

Built 2014 Load: 99.9 t ADT: 71

JEFFERSON AVE

Good

Over: SMALL STREAM

South 975, Sioux, IA

Built 2015 Load: 99.9 t ADT: 30

DOVE AVE

Good

Over: SMALL STREAM

South 1,450, Sioux, IA

Built 2015 Load: 99.9 t ADT: 30

KENNEDY AVE

Good

Over: SMALL STREAM

096440102, Sioux, IA

Built 2016 Load: 99.9 t ADT: 90

360TH ST

Good

Over: SMALL STREAM

096442301, Sioux, IA

Built 2017 Load: 99.9 t ADT: 45

K24 DOGWOOD AVE

Good

Over: SMALL STREAM

095473602010, Sioux, IA

Built 2020 Load: 99.9 t ADT: 30

LOCAL

Poor

Over: SM STREAM

095461701, Sioux, IA

Built 1943 ADT: 5

LOCAL

Poor

Over: SMALL

097462203, Sioux, IA

Built 1965 Load: 7.2 t ADT: 11

FM

Poor

Over: SMALL STREAM

097451501, Sioux, IA

Built 1962 Load: 9.0 t ADT: 34

FM

Poor

Over: CREEK

096440701, Sioux, IA

Built 1949 Load: 12.0 t ADT: 20

FM

Poor

Over: INDIAN CREEK

094472602, Sioux, IA

Built 1967 Load: 26.6 t ADT: 649

FM

Poor

Over: ROCK RIVER

096471603, Sioux, IA

Built 1952 Load: 28.5 t ADT: 1,017

FM

Poor

Over: INDIAN CREEK

094471301, Sioux, IA

Built 1965 Load: 30.1 t ADT: 469

B46

Poor

Over: NO NAME CREEK

095472101, Sioux, IA

Built 1966 Load: 30.1 t ADT: 538

LOCAL

Poor

Over: SMALL

094471302, Sioux, IA

Built 1978 Load: 34.7 t ADT: 34

GARFIELD AVE

Poor

Over: SMALL

097462502, Sioux, IA

Built 1977 Load: 99.9 t ADT: 900

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.