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)

425TH AVE

Good

Over: CREEK

081E60404, Clinton, IA

Built 1970 Load: 26.9 t ADT: 1,241

390TH AVE

Good

Over: STREAM

082E52502, Clinton, IA

Built 1958 Load: 27.0 t ADT: 62

US 61

Good

Over: STREAM

6.7 MI. N OF N JCT. US 30, Clinton, IA

Built 1996 Load: 27.2 t ADT: 9,600

US 61

Good

Over: STREAM

3.9 MI. N OF N JCT. US 30, Clinton, IA

Built 1996 Load: 27.5 t ADT: 10,600

US 61

Good

Over: STREAM

0.5 MI. N OF JCT. IA 136, Clinton, IA

Built 1996 Load: 27.5 t ADT: 9,800

US 61

Good

Over: DD #15

2.4 MI. S OF S Jct. US 30, Clinton, IA

Built 1981 Load: 27.9 t ADT: 17,600

280TH ST

Good

Over: CREEK

081E13205, Clinton, IA

Built 2001 Load: 28.4 t ADT: 25

230TH AVENUE

Good

Over: DEEP CREEK

083E33202, Clinton, IA

Built 2004 Load: 28.6 t ADT: 30

372ND AVE

Good

Over: SIMMONS CREEK

083E51004, Clinton, IA

Built 2002 Load: 28.6 t ADT: 26

NB US 61

Good

Over: SILVER CREEK

0.5 MI.S.OF JCT.US 30, Clinton, IA

Built 1981 Load: 28.8 t ADT: 7,050

180TH AVE.

Good

Over: CREEK

083E21602, Clinton, IA

Built 1989 Load: 29.4 t ADT: 26

US 30

Good

Over: DRAINAGE DITCH

0.5 mi. E of Jct. SR Y-52, Clinton, IA

Built 2006 Load: 30.1 t ADT: 3,500

105TH ST.

Good

Over: DEEP CREEK

083E50503, Clinton, IA

Built 1986 Load: 30.2 t ADT: 113

240TH ST

Good

Over: YANKEE RUN CREEK

081E11701, Clinton, IA

Built 1969 Load: 30.3 t ADT: 73

270TH AVE

Good

Over: DEEP CREEK

083E32504, Clinton, IA

Built 1966 Load: 30.3 t ADT: 30

235TH AVE

Good

Over: DEEP CREEK

083E32808, Clinton, IA

Built 1965 Load: 30.3 t ADT: 26

135TH STREET

Good

Over: S BRANCH OF ELK RIVER

083E62005, Clinton, IA

Built 1965 Load: 30.3 t ADT: 35

308TH AVE

Good

Over: AMES CREEK

081E40906, Clinton, IA

Built 1979 Load: 30.5 t ADT: 70

220TH AVE

Good

Over: DEEP CREEK

082E30602, Clinton, IA

Built 2013 Load: 30.5 t ADT: 35

240TH AVE

Good

Over: NO NAME CREEK

082E32802, Clinton, IA

Built 1970 Load: 30.5 t ADT: 30

200TH AVENUE

Good

Over: CREEK

083E21102, Clinton, IA

Built 1993 Load: 30.7 t ADT: 21

135TH ST.

Good

Over: SPRING CREEK

083E62105, Clinton, IA

Built 1990 Load: 30.7 t ADT: 47

215TH AVE

Good

Over: CREEK

081E22404, Clinton, IA

Built 1992 Load: 30.8 t ADT: 51

E63 190TH ST

Good

Over: PLUM CREEK

082E11805, Clinton, IA

Built 2020 Load: 31.0 t ADT: 110

130TH AVE.

Good

Over: SMALL STREAM

083E12202, Clinton, IA

Built 1987 Load: 31.7 t ADT: 62

210TH ST.

Good

Over: STREAM

082E63201, Clinton, IA

Built 1958 Load: 31.9 t ADT: 70

278TH ST

Good

Over: BARBER CREEK

081E33305, Clinton, IA

Built 2017 Load: 32.1 t ADT: 41

NB US 61

Good

Over: DRAINAGE

6.7 MI. N OF N JCT. US 30, Clinton, IA

Built 1996 Load: 32.3 t ADT: 4,600

SB US 61

Good

Over: DRAINAGE

6.7 MI. N OF N JCT. US 30, Clinton, IA

Built 1996 Load: 32.3 t ADT: 4,600

NB US 61

Good

Over: SILVER CREEK

6.4 MI. S OF JCT. IA 136, Clinton, IA

Built 1996 Load: 32.3 t ADT: 4,600

NB US 61

Good

Over: DEEP CREEK

3.3 MI. S OF JCT. IA 136, Clinton, IA

Built 1996 Load: 32.3 t ADT: 4,400

SEVEN DAY RD

Good

Over: SILVER CREEK(WEST)

082031501, Clinton, IA

Built 2017 Load: 32.4 t ADT: 80

120TH AVENUE

Good

Over: DD #23

083E13204, Clinton, IA

Built 2002 Load: 32.4 t ADT: 51

28TH AVE NORTH

Good

Over: TURTLE CREEK

082071902, Clinton, IA

Built 2019 Load: 32.4 t ADT: 109

105TH AVE

Good

Over: YANKEE RUN CR

081E10706, Clinton, IA

Built 1971 Load: 32.7 t ADT: 73

230TH ST

Good

Over: BROPHYS CREEK

081E50901, Clinton, IA

Built 1985 Load: 32.7 t ADT: 41

185TH AVENUE

Good

Over: DRAINAGE DITCH #10

082E22104, Clinton, IA

Built 2006 Load: 32.7 t ADT: 26

110TH ST

Good

Over: PRAIRIE CREEK

083E20805, Clinton, IA

Built 2019 Load: 32.7 t ADT: 90

STOCKWELL LN

Good

Over: SMALL STREAM

082062401, Clinton, IA

Built 1994 Load: 32.7 t ADT: 887

LINCOLNWAY

Good

Over: DRAINAGE DITCH

081011000, Clinton, IA

Built 1993 Load: 32.7 t ADT: 340

104TH AVE

Good

Over: LIZARD CREEK

081E11906, Clinton, IA

Built 1994 Load: 32.8 t ADT: 73

340TH AVENUE

Good

Over: CHERRY CREEK

081E51804, Clinton, IA

Built 1998 Load: 32.8 t ADT: 30

170TH ST.

Good

Over: DRAINAGE

082E20801, Clinton, IA

Built 1991 Load: 32.8 t ADT: 21

150TH ST

Good

Over: CREEK

083E63201, Clinton, IA

Built 2007 Load: 32.8 t ADT: 62

190TH AVE

Good

Over: CALAMUS CREEK

081E21002, Clinton, IA

Built 1996 Load: 32.9 t ADT: 104

Y4E 130TH AVE

Good

Over: OVERFLOW STRUCTURE

081E11507, Clinton, IA

Built 2014 Load: 33.0 t ADT: 1,060

260TH ST

Good

Over: BROPHYS CREEK

081E53001, Clinton, IA

Built 1985 Load: 33.1 t ADT: 35

125TH STREET

Good

Over: DEEP CREEK

083E51703, Clinton, IA

Built 1977 Load: 33.1 t ADT: 100

460TH AVE.

Good

Over: ELK RIVER

083E61204, Clinton, IA

Built 1986 Load: 33.1 t ADT: 82

SB US 61

Good

Over: DEEP CREEK

3.3 MI. S OF JCT. IA 136, Clinton, IA

Built 1996 Load: 33.2 t ADT: 4,400

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