Carroll County, IA

223 public highway bridges

Carroll County Bridge Snapshot

Carroll County, Iowa contains 223 public highway bridges in the FHWA National Bridge Inventory. Roughly 48.4% are rated “Good,” 43.5% “Fair,” 7.6% “Poor,” and 7.6% 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.

223

Total Bridges

48.4%

Good

7.6%

Poor

7.6%

Structurally Deficient

Condition Distribution

Good

48.4% (108)

Fair

43.5% (97)

Poor

7.6% (17)

SD

7.6% (17)

All Bridges (223)

Sort:

LOCAL

Over: MIDDLE RACCOON RIVER

084360101, Carroll, IA

Built 1974 Load: 22.6 t ADT: 20

FM

Over: BRUSHY FORK CREEK

083353402, Carroll, IA

Built 1962 Load: 22.7 t ADT: 50

E13 110TH ST

Over: FIELD STREAM

085331201, Carroll, IA

Built 1973 Load: 22.7 t ADT: 60

RT E45

Over: MIDDLE RACCOON RIVER

083341301, Carroll, IA

Built 1974 Load: 22.8 t ADT: 100

LOCAL

Over: MIDDLE RACCOON RIVER

084351502, Carroll, IA

Built 1970 Load: 22.8 t ADT: 29

N 41

Over: RACCOON RIVER

085331710, Carroll, IA

Built 1925 Load: 22.9 t ADT: 1,146

LOCAL

Over: WILLOW CREEK

083330202, Carroll, IA

Built 1975 Load: 23.0 t ADT: 15

LOCAL

Over: FIELD STREAM

083362201, Carroll, IA

Built 1900 Load: 23.1 t ADT: 11

LOCAL

Over: FIELD STREAM

085351002, Carroll, IA

Built 1966 Load: 23.1 t ADT: 100

LOCAL

Over: FIELD STREAM

083352903, Carroll, IA

Built 1950 Load: 23.2 t ADT: 20

FM

Over: ELK RUN CREEK

085341001, Carroll, IA

Built 1956 Load: 23.3 t ADT: 100

LOCAL

Over: STORM CREEK

085360101, Carroll, IA

Built 1993 Load: 23.3 t ADT: 30

320TH ST

Over: FIELD STREAM

082333001, Carroll, IA

Built 1900 Load: 23.5 t ADT: 29

FM

Over: FIELD STREAM

083360102, Carroll, IA

Built 1986 Load: 23.5 t ADT: 34

LOCAL

Over: WILLOW CREEK

083330301, Carroll, IA

Built 1900 Load: 23.6 t ADT: 26

LOCAL

Over: FIELD STREAM

085363201, Carroll, IA

Built 1990 Load: 23.6 t ADT: 40

FM

Over: FIELD STREAM

082341304, Carroll, IA

Built 1951 Load: 24.1 t ADT: 45

LOCAL

Over: FIELD STREAM

082340602, Carroll, IA

Built 1950 Load: 24.3 t ADT: 60

LOCAL

Over: STREAM

082360602, Carroll, IA

Built 1999 Load: 24.7 t ADT: 5

LOCAL

Over: FIELD STREAM

082353404, Carroll, IA

Built 1954 Load: 24.9 t ADT: 11

LOCAL

Over: FIELD STREAM

084352310, Carroll, IA

Built 1971 Load: 25.1 t ADT: 459

FM

Over: NO NAME CREEK

084360602, Carroll, IA

Built 1971 Load: 25.3 t ADT: 728

LOCAL RD

Over: STORM CREEK

084340501, Carroll, IA

Built 1980 Load: 26.5 t ADT: 131

FM

Over: BRUSHY FORK CREEK

083350804, Carroll, IA

Built 1968 Load: 26.6 t ADT: 638

FM

Over: STORM CREEK

085343101, Carroll, IA

Built 1964 Load: 27.2 t ADT: 1,047

FM

Over: WEST NISHNABOTNA RIVER

083361502, Carroll, IA

Built 1977 Load: 27.8 t ADT: 847

FM

Over: WEST NISHNABOTNA RIVER

082363101, Carroll, IA

Built 1970 Load: 30.0 t ADT: 120

FM

Over: MIDDLE RACCOON RIVER

083342305, Carroll, IA

Built 1982 Load: 30.2 t ADT: 50

FM

Over: STORM CREEK

084341102, Carroll, IA

Built 1964 Load: 30.4 t ADT: 687

FM

Over: EAST BOYER RIVER

084361902, Carroll, IA

Built 1971 Load: 30.4 t ADT: 687

FM

Over: PURGATORY CREEK

085332401, Carroll, IA

Built 1969 Load: 30.6 t ADT: 180

PL RIDGE RD

Over: TIMBER CREEK

000000000, Carroll, IA

Built 1995 Load: 31.0 t ADT: 584

E16

Over: MARROWBONE CREEK

085331701, Carroll, IA

Built 1949 Load: 31.1 t ADT: 558

E53 270TH ST

Over: BRUSHY FORK CREEK

083353401, Carroll, IA

Built 1963 Load: 31.7 t ADT: 71

LOCAL

Over: FIELD STREAM

084351402, Carroll, IA

Built 1985 Load: 31.8 t ADT: 379

LOCAL SDB

Over: DRAINAGE

085351502, Carroll, IA

Built 1940 Load: 32.3 t ADT: 45

LOCAL

Over: FIELD STREAM

083360902, Carroll, IA

Built 1996 Load: 32.7 t ADT: 20

CORP.LINE RD

Over: WEST NISHNABOTNA RIVER

082361701, Carroll, IA

Built 1980 Load: 33.1 t ADT: 289

IA 141

Over: EAST NISHNABOTNA RIVER

0.3 MI. W OF W JCT. US 71, Carroll, IA

Built 1971 Load: 36.0 t ADT: 2,000

11TH ST

Over: LATERAL #77 DD #23

000000000, Carroll, IA

Built 1900 Load: 37.5 t ADT: 1,112

US 30

Over: MIDDLE RACCOON RIVER

1.4 mi. W of jct. U.S. 71, Carroll, IA

Built 1982 Load: 40.6 t ADT: 6,000

LOCAL

Over: BUCK RUN

085342504, Carroll, IA

Built 1952 Load: 41.2 t ADT: 26

CORP.LINE RD

Over: BR WEST NISHNABOTA RIVER

082361701, Carroll, IA

Built 1980 Load: 41.8 t ADT: 289

M66 BIRCH AVE

Over: NO NAME CREEK

084363202, Carroll, IA

Built 1965 Load: 46.1 t ADT: 34

FM

Over: MIDDLE RACCOON RIVER

084350902, Carroll, IA

Built 1993 Load: 52.9 t ADT: 537

200TH ST

Over: BRUSHY FORK CREEK

084362601, Carroll, IA

Built 2011 Load: 53.6 t ADT: 40

FM

Over: UNNAMED CREEK

084360702, Carroll, IA

Built 1971 Load: 58.6 t ADT: 728

IA 141

Over: STREAM

4.7 MI. W OF W JCT.71, Carroll, IA

Built 1972 Load: 65.8 t ADT: 2,190

LOCAL

Over: FIELD STREAM

085333002, Carroll, IA

Built 1997 Load: 13.0 t ADT: 11

LOCAL

Over: FIELD STREAM

083 33 11 02, Carroll, IA

Built 2010 Load: 15.0 t ADT: 15

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

Reviewed byPlainbridges Editorial, Plain Bridges Editorial Team · June 6, 2026