Clinton County, IA

325 public highway bridges

Clinton County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Clinton County, Iowa contains 325 public highway bridges. Roughly 70.5% are rated “Good,” 23.7% “Fair,” and 2.2% “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.

325
Total Bridges
70.5%
Good
23.7%
Fair
2.2%
Poor Condition

Condition Distribution

Good
70.5% (229)
Fair
23.7% (77)
Poor
2.2% (7)

All Bridges (325)

270TH STREET

Good

Over: SMALL STREAM

081E13301, Clinton, IA

Built 2018 Load: 70.6 t ADT: 21

110TH ST

Good

Over: CREEK

083E21103, Clinton, IA

Built 2011 Load: 71.3 t ADT: 113

220TH AVE

Good

Over: CREEK

082E33002, Clinton, IA

Built 2020 Load: 71.9 t ADT: 62

260TH ST

Good

Over: SMALL STREAM

081E22601, Clinton, IA

Built 2006 Load: 77.1 t ADT: 11

Y 44 170TH AVE

Good

Over: SMALL STREAM

082E22902, Clinton, IA

Built 2013 Load: 77.1 t ADT: 470

160TH ST

Good

Over: DRAINAGE

082E10102, Clinton, IA

Built 2020 Load: 80.0 t ADT: 30

160TH ST

Good

Over: WILLIAMS CREEK

082E404001, Clinton, IA

Built 2018 Load: 80.4 t ADT: 21

205TH ST

Good

Over: CREEK

082E42903, Clinton, IA

Built 2019 Load: 80.7 t ADT: 35

145TH ST

Good

Over: SMALL CREEK

083E32503, Clinton, IA

Built 2005 Load: 80.7 t ADT: 40

Z40 400TH AVE

Good

Over: SOUTH BRANCH ELK RIVER

083E63006, Clinton, IA

Built 2016 Load: 88.8 t ADT: 45

345TH AVENUE

Good

Over: CREEK

000000000, Clinton, IA

Built 2010 Load: 88.9 t ADT: 62

210TH ST

Good

Over: CREEK

082E23101, Clinton, IA

Built 2010 Load: 89.8 t ADT: 41

185TH ST

Good

Over: CREEK

T82E518, Clinton, IA

Built 2010 Load: 89.8 t ADT: 26

260TH AVE

Good

Over: CREEK

082E31104, Clinton, IA

Built 2019 Load: 96.2 t ADT: 135

280TH ST

Good

Over: CREEK

081E23108, Clinton, IA

Built 2020 Load: 97.2 t ADT: 82

200TH AVE

Good

Over: DD

082E22602, Clinton, IA

Built 2017 Load: 97.2 t ADT: 60

280TH AVE

Good

Over: CREEK

082E41802, Clinton, IA

Built 2016 Load: 97.2 t ADT: 82

110TH ST.

Good

Over: SCRAMBLING CREEK

083E70701, Clinton, IA

Built 1974 Load: 99.9 t ADT: 26

235TH STREET

Poor

Over: WAPSIPINICON RIVER

081E11105, Clinton, IA

Built 1930 ADT: 100

235TH STREET

Poor

Over: BRANCH OF WAPSIPINICON

081E11203, Clinton, IA

Built 1930 ADT: 100

100TH ST.

Poor

Over: UNION CREEK

083E20101, Clinton, IA

Built 1900 Load: 2.7 t ADT: 78

432ND AVENUE

Poor

Over: ELK RIVER

083E61506, Clinton, IA

Built 1968 Load: 30.3 t ADT: 310

308TH AVE.

Poor

Over: SUGAR CREEK

083E40404, Clinton, IA

Built 1985 Load: 36.0 t ADT: 70

255TH AVE

Poor

Over: CREEK

081E33404, Clinton, IA

Built 1988 Load: 42.9 t ADT: 11

300TH AVE

Poor

Over: AMES CREEK

081E40402, Clinton, IA

Built 1912 Load: 65.3 t ADT: 16

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

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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.