Clinton County, IA

325 public highway bridges

Clinton County Bridge Snapshot

Clinton County, Iowa contains 325 public highway bridges in the FHWA National Bridge Inventory. Roughly 70.5% are rated “Good,” 23.7% “Fair,” 2.2% “Poor,” and 2.2% 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.

325
Total Bridges
70.5%
Good
2.2%
Poor
2.2%
Structurally Deficient

Condition Distribution

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

All Bridges (325)

190TH ST

Good

Over: SMALL STREAM

082E22101, Clinton, IA

Built 1992 Load: 37.0 t ADT: 420

210TH ST.

Good

Over: CREEK

082E53401, Clinton, IA

Built 1984 Load: 37.0 t ADT: 25

Y44 (170TH AVE)

Good

Over: DRAINAGE DITCH 20

082E22002, Clinton, IA

Built 2012 Load: 37.3 t ADT: 470

150TH AVENUE

Good

Over: CREEK

083E12504, Clinton, IA

Built 2013 Load: 37.3 t ADT: 35

145TH AVE

Good

Over: CREEK

081E12604, Clinton, IA

Built 2001 Load: 37.5 t ADT: 82

335TH AVE

Good

Over: BAIRD CREEK

083E41303, Clinton, IA

Built 1997 Load: 37.5 t ADT: 16

130TH ST

Good

Over: CREEK

083E62301, Clinton, IA

Built 2022 Load: 37.5 t ADT: 25

195TH ST

Good

Over: CREEK

000000000, Clinton, IA

Built 2009 Load: 37.5 t ADT: 26

291ST

Good

Over: SODUS CREEK

080E51207, Clinton, IA

Built 2004 Load: 37.6 t ADT: 240

265TH AVE.

Good

Over: SMALL STREAM

083E30206, Clinton, IA

Built 1994 Load: 37.6 t ADT: 33

352ND AVE.

Good

Over: BROPHY CREEK

082E50504, Clinton, IA

Built 1996 Load: 38.0 t ADT: 51

220TH STREET

Good

Over: CREEK

081E60401, Clinton, IA

Built 1962 Load: 38.1 t ADT: 1,310

432ND AVE.

Good

Over: SPRING CREEK

083E63404, Clinton, IA

Built 1971 Load: 38.5 t ADT: 780

110TH ST.

Good

Over: CREEK

083E30503, Clinton, IA

Built 1995 Load: 38.6 t ADT: 41

120TH ST

Good

Over: SIMMONS CREEK

083E51401, Clinton, IA

Built 2005 Load: 38.7 t ADT: 21

190TH ST.

Good

Over: DRAINAGE DITCH #11

082E12301, Clinton, IA

Built 1976 Load: 39.0 t ADT: 47

230TH AVE

Good

Over: NEGRO CREEK

082E32902, Clinton, IA

Built 1987 Load: 39.0 t ADT: 360

170TH ST.

Good

Over: BROPHY CREEK

082E50901, Clinton, IA

Built 1971 Load: 39.0 t ADT: 70

420TH AVE.

Good

Over: MILL CREEK

082E61602, Clinton, IA

Built 2021 Load: 39.1 t ADT: 166

200TH ST

Good

Over: DD #11

082E12603, Clinton, IA

Built 2004 Load: 39.5 t ADT: 11

160 ST

Good

Over: BROPHY CREEK

082E50403, Clinton, IA

Built 2000 Load: 39.5 t ADT: 41

302ND AVENUE

Good

Over: SMALL STREAM

082E40403, Clinton, IA

Built 2005 Load: 39.6 t ADT: 660

370TH AVE

Good

Over: CREEK

080E51004, Clinton, IA

Built 2017 Load: 39.8 t ADT: 11

350TH AVE

Good

Over: SMALL STREAM

081E52902, Clinton, IA

Built 1998 Load: 39.8 t ADT: 460

260TH ST

Good

Over: CREEK

081E53001, Clinton, IA

Built 1940 Load: 39.8 t ADT: 35

FM

Good

Over: HARTS MILL CREEK

081E60501, Clinton, IA

Built 1962 Load: 40.0 t ADT: 1,310

100TH STREET

Good

Over: PRAIRIE CREEK

083E20201, Clinton, IA

Built 2006 Load: 40.0 t ADT: 11

120TH ST.

Good

Over: BAIRD CREEK

083E50708, Clinton, IA

Built 2008 Load: 40.0 t ADT: 104

120TH STREET

Good

Over: SIMMONS CREEK

083E51601, Clinton, IA

Built 1993 Load: 40.1 t ADT: 62

340TH AVE

Good

Over: CHERRY CR

081E50704, Clinton, IA

Built 2019 Load: 40.2 t ADT: 30

195TH ST

Good

Over: SILVER CREEK (WEST)

082E32207, Clinton, IA

Built 1917 Load: 40.4 t ADT: 26

Y-44

Good

Over: CALAMUS CREEK

00000, Clinton, IA

Built 2011 Load: 40.5 t ADT: 730

125TH STREET

Good

Over: ELK RIVER

083E61703, Clinton, IA

Built 2018 Load: 40.5 t ADT: 21

IA 136

Good

Over: CAR BARN CREEK

IN CITY OF CLINTON, Clinton, IA

Built 2016 Load: 40.5 t ADT: 5,200

205TH STREET

Good

Over: CREEK

082E22903, Clinton, IA

Built 2005 Load: 40.8 t ADT: 51

Y54 (230TH AVE)

Good

Over: SMALL CREEK

082E32902, Clinton, IA

Built 2013 Load: 40.8 t ADT: 360

237TH AVE

Good

Over: CREEK

081E31708, Clinton, IA

Built 2009 Load: 40.8 t ADT: 21

180TH ST

Good

Over: DRAINAGE

082E21801, Clinton, IA

Built 2007 Load: 40.9 t ADT: 30

120TH STREET

Good

Over: STREAM

083E41701, Clinton, IA

Built 1959 Load: 41.5 t ADT: 30

Z36 380TH AVE

Good

Over: SMALL STREAM

082E51402, Clinton, IA

Built 2018 Load: 41.7 t ADT: 1,300

W 11TH ST

Good

Over: SILVER CREEK

000000000, Clinton, IA

Built 1990 Load: 41.8 t ADT: 8,900

230TH AVENUE

Good

Over: BARBER CREEK

081E32902, Clinton, IA

Built 2010 Load: 41.8 t ADT: 410

145TH ST

Good

Over: SMALL STREAM

083E32603, Clinton, IA

Built 2005 Load: 42.1 t ADT: 25

210TH ST.

Good

Over: STREAM

082E63201, Clinton, IA

Built 1957 Load: 42.2 t ADT: 70

E-63

Good

Over: DRAINAGE DITCH 11

082E11401, Clinton, IA

Built 2007 Load: 42.3 t ADT: 320

235TH STREET

Good

Over: OVERFLOW OF WAPSIPINICON

081E11003, Clinton, IA

Built 2008 Load: 42.4 t ADT: 510

190TH STREET

Good

Over: SMALL STREAM

082E22301, Clinton, IA

Built 1992 Load: 42.4 t ADT: 490

140TH STREET

Good

Over: CREEK

083E62801, Clinton, IA

Built 1961 Load: 42.9 t ADT: 860

280TH STREET

Good

Over: CREEK

081E13303, Clinton, IA

Built 2004 Load: 43.0 t ADT: 25

245TH ST

Good

Over: AMES CREEK

081E41603, Clinton, IA

Built 1988 Load: 43.4 t ADT: 1,930

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

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