Calhoun County, IA

171 public highway bridges

Calhoun County Bridge Snapshot

Calhoun County, Iowa contains 171 public highway bridges in the FHWA National Bridge Inventory. Roughly 24% are rated “Good,” 49.1% “Fair,” 25.7% “Poor,” and 25.7% 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.

171
Total Bridges
24%
Good
25.7%
Poor
25.7%
Structurally Deficient

Condition Distribution

Good
24% (41)
Fair
49.1% (84)
Poor
25.7% (44)
SD
25.7% (44)

All Bridges (171)

US 20 EB

Unknown

Over: IA 4

US 20 over IA 4, Calhoun, IA

Built 2012 ADT: 1,160

US 20 WB

Unknown

Over: IA 4

U.S. 20 Over IA 4, Calhoun, IA

Built 2012 ADT: 1,160

LOCAL

Fair

Over: BIG CEDAR CR D D 181

089342802, Calhoun, IA

Built 1921 Load: 13.7 t ADT: 20

LOCAL

Fair

Over: CAMP CREEK

087340501, Calhoun, IA

Built 1990 Load: 15.1 t ADT: 20

FM

Fair

Over: PURGATORY

086333601, Calhoun, IA

Built 1938 Load: 16.1 t ADT: 34

LOCAL

Fair

Over: BIG CEDAR CR D D 181

089343202, Calhoun, IA

Built 1961 Load: 16.8 t ADT: 15

LOCAL

Fair

Over: LAKE CREEK

087333402, Calhoun, IA

Built 1955 Load: 17.2 t ADT: 26

LOCAL

Fair

Over: DD 12

089313601, Calhoun, IA

Built 1973 Load: 17.2 t ADT: 34

FM

Fair

Over: WEST CEDAR

087310701, Calhoun, IA

Built 1955 Load: 18.2 t ADT: 5

FM

Fair

Over: E CEDAR CREEK

087313201, Calhoun, IA

Built 1956 Load: 18.5 t ADT: 11

LOCAL

Fair

Over: LAKE CR

087321701, Calhoun, IA

Built 1964 Load: 19.2 t ADT: 34

FM

Fair

Over: PURGATORY CREEK

087321101, Calhoun, IA

Built 1955 Load: 21.5 t ADT: 26

LOCAL

Fair

Over: D.D. NO 20

086320901, Calhoun, IA

Built 1972 Load: 21.9 t ADT: 34

LOCAL

Fair

Over: LAKE CREEK

087320503, Calhoun, IA

Built 1967 Load: 22.3 t ADT: 26

LOCAL

Fair

Over: LAKE CR.

087332501, Calhoun, IA

Built 1965 Load: 22.3 t ADT: 15

FM

Fair

Over: DD NO. 1

089331901, Calhoun, IA

Built 1964 Load: 22.4 t ADT: 219

LOCAL

Fair

Over: D D 67

088343502, Calhoun, IA

Built 1971 Load: 23.1 t ADT: 11

FM

Fair

Over: DD 13

088322201, Calhoun, IA

Built 1972 Load: 23.5 t ADT: 26

FM

Fair

Over: PURGATORY CREEK

087322301, Calhoun, IA

Built 1965 Load: 24.9 t ADT: 150

FM

Fair

Over: LAKE CREEK

087333401, Calhoun, IA

Built 1967 Load: 26.3 t ADT: 20

IA 7

Fair

Over: OVER CC RR

0.8 mi. E of SR P19, Calhoun, IA

Built 1974 Load: 27.1 t ADT: 2,560

FM

Fair

Over: DD #65

088321802, Calhoun, IA

Built 1987 Load: 27.2 t ADT: 957

FM

Fair

Over: DD NO. 83

088311901, Calhoun, IA

Built 1972 Load: 28.0 t ADT: 15

LOCAL

Fair

Over: DD NO 12

089312102, Calhoun, IA

Built 1976 Load: 28.0 t ADT: 60

OLD US 20

Fair

Over: CAMP CREEK

088342101, Calhoun, IA

Built 1992 Load: 28.2 t ADT: 609

FM

Fair

Over: DD 9-13

088322001, Calhoun, IA

Built 1973 Load: 28.6 t ADT: 20

LOCAL

Fair

Over: DD NO 12

089312702, Calhoun, IA

Built 1973 Load: 28.6 t ADT: 45

LOCAL

Fair

Over: CEDAR CREEK

086322601, Calhoun, IA

Built 1980 Load: 29.8 t ADT: 11

LOCAL

Fair

Over: LAKE CREEK

087320803, Calhoun, IA

Built 1974 Load: 30.2 t ADT: 11

LOCAL

Fair

Over: D D 181

089340901, Calhoun, IA

Built 1979 Load: 30.2 t ADT: 26

FM

Fair

Over: HARDING CREEK

086313501, Calhoun, IA

Built 1976 Load: 30.4 t ADT: 15

FM

Fair

Over: DD 195

086342702, Calhoun, IA

Built 1969 Load: 30.4 t ADT: 80

LOCAL

Fair

Over: E.CEDAR CR.

087311002, Calhoun, IA

Built 1978 Load: 30.4 t ADT: 30

LOCAL

Fair

Over: E CEDAR CREEK

087312102, Calhoun, IA

Built 1966 Load: 30.4 t ADT: 30

LOCAL

Fair

Over: CAMP CREEK

087340401, Calhoun, IA

Built 1974 Load: 30.4 t ADT: 15

LOCAL

Fair

Over: CAMP CREEK

087340402, Calhoun, IA

Built 1974 Load: 30.4 t ADT: 11

LOCAL

Fair

Over: CAMP CR

087340902, Calhoun, IA

Built 1970 Load: 30.4 t ADT: 15

LOCAL

Fair

Over: DD NO. 12

088312201, Calhoun, IA

Built 1971 Load: 30.4 t ADT: 20

LOCAL

Fair

Over: DD 9-13

089322601, Calhoun, IA

Built 1973 Load: 30.4 t ADT: 20

FM

Fair

Over: LIZARD CREEK SO BRANCH

089311202, Calhoun, IA

Built 1969 Load: 30.6 t ADT: 240

LOCAL

Fair

Over: HARDIN CREEK DD#95

086310201, Calhoun, IA

Built 1982 Load: 31.2 t ADT: 15

LOCAL

Fair

Over: D D NO 2

088341501, Calhoun, IA

Built 1980 Load: 31.2 t ADT: 30

LOCAL

Fair

Over: DRAINAGE DITCH 1-54

089333001, Calhoun, IA

Built 1982 Load: 31.2 t ADT: 15

FM

Fair

Over: DD #1-54

089333102, Calhoun, IA

Built 1982 Load: 31.2 t ADT: 20

LOCAL

Fair

Over: PURGATORY CREEK

086322001, Calhoun, IA

Built 1985 Load: 31.5 t ADT: 11

FM

Fair

Over: RACCOON RIVER

086340602, Calhoun, IA

Built 1969 Load: 31.5 t ADT: 529

LOCAL

Fair

Over: DD #1 & 54

089333202, Calhoun, IA

Built 1987 Load: 31.5 t ADT: 20

LOCAL

Fair

Over: E. CEDAR CR

087311603, Calhoun, IA

Built 1981 Load: 31.8 t ADT: 5

LOCAL

Fair

Over: BRANCH 976 ON DD 181

089342002, Calhoun, IA

Built 1982 Load: 31.8 t ADT: 20

FM

Fair

Over: CROOKED CREEK

087340604, Calhoun, IA

Built 1982 Load: 32.7 t ADT: 1,067

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