Clayton County, IA

214 public highway bridges

Clayton County Bridge Snapshot

Clayton County, Iowa contains 214 public highway bridges in the FHWA National Bridge Inventory. Roughly 32.2% are rated “Good,” 57.9% “Fair,” 9.8% “Poor,” and 9.8% 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.

214
Total Bridges
32.2%
Good
9.8%
Poor
9.8%
Structurally Deficient

Condition Distribution

Good
32.2% (69)
Fair
57.9% (124)
Poor
9.8% (21)
SD
9.8% (21)

All Bridges (214)

160TH ST

Fair

Over: STREAM

094060403, Clayton, IA

Built 1981 Load: 32.3 t ADT: 11

GRANDVIEW RD

Fair

Over: SMALL STREAM

092041808, Clayton, IA

Built 1984 Load: 32.7 t ADT: 874

DOMINO RD

Fair

Over: STREAM

093052907, Clayton, IA

Built 1920 Load: 32.7 t ADT: 619

190TH ST

Fair

Over: STREAM

094042101, Clayton, IA

Built 1988 Load: 32.7 t ADT: 206

145TH ST

Fair

Over: SMALL CREEK

095052903, Clayton, IA

Built 1986 Load: 32.7 t ADT: 69

IA 56

Fair

Over: PONY CREEK

0.1 MI. W OF JCT. IA 13, Clayton, IA

Built 1983 Load: 32.7 t ADT: 1,280

DOMINO RD

Fair

Over: SCHNEIDERS CREEK

093052809, Clayton, IA

Built 1973 Load: 33.0 t ADT: 619

EAGLE RD

Fair

Over: ROBERTS CREEK

094051604, Clayton, IA

Built 1986 Load: 33.3 t ADT: 98

CRYSTAL RD

Fair

Over: HEWETT CREEK

092061404, Clayton, IA

Built 1977 Load: 34.6 t ADT: 44

BUSH RD

Fair

Over: DEEP CREEK

093063103, Clayton, IA

Built 1978 Load: 34.6 t ADT: 275

ASPEN RD

Fair

Over: WILLOW CREEK

092060507, Clayton, IA

Built 1914 Load: 35.9 t ADT: 275

GREAT RIVER RD

Fair

Over: BUCK CREEK

093023210, Clayton, IA

Built 1979 Load: 36.0 t ADT: 1,228

FROELICH RD

Fair

Over: STREAM

095043303, Clayton, IA

Built 1904 Load: 36.9 t ADT: 154

330TH ST

Fair

Over: SPRING CREEK

092063605, Clayton, IA

Built 2012 Load: 37.9 t ADT: 35

LOWER CEDAR RD

Fair

Over: CEDAR CREEK

092033203, Clayton, IA

Built 1930 Load: 38.6 t ADT: 44

DOMINO RD

Fair

Over: PINE CREEK

092060206, Clayton, IA

Built 1973 Load: 39.0 t ADT: 619

FM

Fair

Over: SNY MAGILL

094032206, Clayton, IA

Built 1980 Load: 39.5 t ADT: 953

BRIDGE ST

Fair

Over: HONEY CREEK

092052524, Clayton, IA

Built 1973 Load: 40.2 t ADT: 589

GARBER RD

Fair

Over: SOUTH CEDAR CREEK

000000000, Clayton, IA

Built 2009 Load: 41.5 t ADT: 638

LUMBER RD

Fair

Over: SMALL

091033604, Clayton, IA

Built 1976 Load: 46.7 t ADT: 70

AGATE RD

Fair

Over: SAND CREEK

094062003, Clayton, IA

Built 2002 Load: 48.2 t ADT: 295

LANTERN AVE

Fair

Over: MILL CREEK

091031306, Clayton, IA

Built 1940 Load: 48.9 t ADT: 11

US 18

Fair

Over: BLOODY RUN & RR

1.3 mi. W of Jct. IA. 76, Clayton, IA

Built 1988 Load: 49.4 t ADT: 4,140

BASSWOOD AVE

Fair

Over: ROBERTS CREEK

095061502, Clayton, IA

Built 2002 Load: 58.1 t ADT: 668

LAREDO RD

Good

Over: TURKEY RIVER

040000520, Clayton, IA

Built 2002 Load: 12.6 t ADT: 799

DELTA AVE

Good

Over: STREAM

093050604, Clayton, IA

Built 1955 Load: 17.0 t ADT: 16

390TH ST

Good

Over: SMALL STREAM

091063101, Clayton, IA

Built 1958 Load: 17.0 t ADT: 79

HAZEL RD

Good

Over: STREAM

092041703, Clayton, IA

Built 1978 Load: 22.7 t ADT: 30

215TH ST

Good

Over: SMALL STREAM

094043303, Clayton, IA

Built 1986 Load: 22.7 t ADT: 49

145TH ST

Good

Over: SILVER CREEK

095052903, Clayton, IA

Built 1986 Load: 22.7 t ADT: 69

CORAL AVE

Good

Over: SILVER CREEK

095062404, Clayton, IA

Built 2021 Load: 22.7 t ADT: 30

250TH ST

Good

Over: STREAM

093042301, Clayton, IA

Built 1999 Load: 23.3 t ADT: 206

390TH ST

Good

Over: LINDSEY CREEK

091053203, Clayton, IA

Built 2006 Load: 24.0 t ADT: 26

IA 13

Good

Over: TURKEY RIVER OVERFLOW

0.3 mi. N of Jct. IA #56, Clayton, IA

Built 1982 Load: 24.5 t ADT: 2,800

GOLDEN AVE

Good

Over: DOE CREEK

091040604, Clayton, IA

Built 2002 Load: 24.9 t ADT: 11

JUPITER RD

Good

Over: TURKEY RIVER

092043618, Clayton, IA

Built 1983 Load: 25.1 t ADT: 246

B45

Good

Over: UNAMED CREEK

AT JCT. US 18 & SR B45, Clayton, IA

Built 1988 Load: 28.2 t ADT: 10

FM

Good

Over: BUCK CREEK

093031604, Clayton, IA

Built 1986 Load: 28.5 t ADT: 894

FAWN HOLLOW

Good

Over: ROBERT'S CREEK

094053606, Clayton, IA

Built 1984 Load: 29.8 t ADT: 128

258TH ST

Good

Over: DRY MILL CREEK

093041906, Clayton, IA

Built 2008 Load: 30.1 t ADT: 10

FAWN HOLLOW

Good

Over: ROBERT'S CREEK

093050204, Clayton, IA

Built 1984 Load: 31.4 t ADT: 118

US 18 & 52

Good

Over: NATURAL STREAM

0.6 MI. W OF E JCT. US 52, Clayton, IA

Built 1967 Load: 32.1 t ADT: 3,780

MISSISSIPPI RD

Good

Over: STREAM

093021803, Clayton, IA

Built 2005 Load: 32.3 t ADT: 157

A AVE

Good

Over: DEEP CREEK

093063104, Clayton, IA

Built 1998 Load: 32.3 t ADT: 11

FAWN HOLLOW RD

Good

Over: STREAM

0.5 MI. S OF JCT. IA 128, Clayton, IA

Built 1979 Load: 32.4 t ADT: 10

TOLLGATE RD

Good

Over: SMALL STREAM

091012805, Clayton, IA

Built 1982 Load: 32.7 t ADT: 246

MESQUITE RD

Good

Over: SMALL STREAM

091020603, Clayton, IA

Built 1986 Load: 32.7 t ADT: 41

CHERRY VALLEY R

Good

Over: STREAM

091021507, Clayton, IA

Built 1996 Load: 32.7 t ADT: 104

A AVE

Good

Over: STREAM

091060704, Clayton, IA

Built 1996 Load: 32.7 t ADT: 39

ACORN RD

Good

Over: STREAM

091062906, Clayton, IA

Built 2000 Load: 32.7 t ADT: 62

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