Clarke County, IA

150 public highway bridges

Clarke County Bridge Snapshot

Clarke County, Iowa contains 150 public highway bridges in the FHWA National Bridge Inventory. Roughly 24% are rated “Good,” 40.7% “Fair,” 34% “Poor,” and 34% 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.

150

Total Bridges

24%

Good

34%

Poor

34%

Structurally Deficient

Condition Distribution

Good

24% (36)

Fair

40.7% (61)

Poor

34% (51)

SD

34% (51)

All Bridges (150)

Sort:

DOYLE ST

Over: INTERSTATE 35

2.0 mi. S of SR H45, Clarke, IA

Built 1969 ADT: 16,000

CLAY STREET

Over: I-35

1.0 mi. N of US 34, Clarke, IA

Built 1999 ADT: 15,500

LOCAL

Over: SHORT CREEK

071273306, Clarke, IA

Built 1964 ADT: 10

LOCAL

Over: WHITE BREAST CK

072262701, Clarke, IA

Built 1975 Load: 6.9 t ADT: 26

LOCAL

Over: SOUTH WHITE BREAST CREEK

071240804, Clarke, IA

Built 1982 Load: 7.6 t ADT: 34

LOCAL

Over: SOUTH OTTER CREEK

072240206, Clarke, IA

Built 1982 Load: 9.2 t ADT: 11

LOCAL

Over: LOCAL CREEK

073261005, Clarke, IA

Built 1900 Load: 9.3 t ADT: 20

LOCAL

Over: SOUTH WHITE BREAST CREEK

071250902, Clarke, IA

Built 1985 Load: 12.3 t ADT: 15

LOCAL

Over: BR LONG CREEK

071273504, Clarke, IA

Built 1900 Load: 13.1 t ADT: 20

SCOTT ST

Over: SMALL CREEK

073241101, Clarke, IA

Built 2008 Load: 13.9 t ADT: 40

FM

Over: SOUTH RIVER

073271506, Clarke, IA

Built 1955 Load: 14.3 t ADT: 71

FM

Over: SOUTH WHITE BREAST CREEK

071241002, Clarke, IA

Built 1939 Load: 15.1 t ADT: 45

LOCAL

Over: OTTER CREEK

073241504, Clarke, IA

Built 1942 Load: 15.2 t ADT: 34

LOCAL

Over: EAST LONG CREEK

071271404, Clarke, IA

Built 1977 Load: 15.4 t ADT: 11

LOCAL

Over: EAST LONG CREEK

071272603, Clarke, IA

Built 1977 Load: 15.5 t ADT: 5

FM

Over: WHITE BREAST CREEK

071240304, Clarke, IA

Built 1958 Load: 17.1 t ADT: 50

FM

Over: BRANCH LONG CREEK

071273405, Clarke, IA

Built 1966 Load: 17.2 t ADT: 11

FM

Over: SMALL CREEK

071273302, Clarke, IA

Built 1958 Load: 18.1 t ADT: 219

LOCAL

Over: WEST CREEK

073251502, Clarke, IA

Built 1970 Load: 20.0 t ADT: 45

LOCAL

Over: S WHITE BREAST CR

071252201, Clarke, IA

Built 1985 Load: 21.9 t ADT: 11

LOCAL

Over: EAST LONG CK

071273606, Clarke, IA

Built 1975 Load: 22.2 t ADT: 29

FM

Over: CHARITON CREEK

071252504, Clarke, IA

Built 1981 Load: 24.2 t ADT: 40

FM

Over: BRANCH LONG CREEK

071271401, Clarke, IA

Built 1964 Load: 24.5 t ADT: 60

LOCAL

Over: CHARITON CR

071243103, Clarke, IA

Built 1986 Load: 24.9 t ADT: 15

FM

Over: WEST CREEK

073250202, Clarke, IA

Built 1962 Load: 25.6 t ADT: 71

FM

Over: OTTER CREEK BRANCH

073243303, Clarke, IA

Built 1970 Load: 26.8 t ADT: 40

LOCAL

Over: CREEK

072271903, Clarke, IA

Built 1980 Load: 27.2 t ADT: 11

LOCAL

Over: SO WHITE BREAST CREEK

071252204, Clarke, IA

Built 1983 Load: 28.3 t ADT: 71

FM

Over: OTTER CREEK

072250302, Clarke, IA

Built 1983 Load: 28.6 t ADT: 26

LOCAL

Over: SMALL

071273303, Clarke, IA

Built 1979 Load: 29.3 t ADT: 26

FM

Over: NORTH WHITE BREAST CREEK

071251204, Clarke, IA

Built 1981 Load: 29.7 t ADT: 15

FM

Over: EAST LONG CREEK

071273601, Clarke, IA

Built 1982 Load: 29.7 t ADT: 29

FM

Over: BEE CREEK

071263401, Clarke, IA

Built 1977 Load: 29.9 t ADT: 15

FM

Over: LONG CREEK

071271403, Clarke, IA

Built 1962 Load: 29.9 t ADT: 71

LOCAL

Over: NORTH WHITE BREAST CREEK

071240504, Clarke, IA

Built 1982 Load: 30.2 t ADT: 60

FM

Over: CHARITON CREEK

071242302, Clarke, IA

Built 1980 Load: 30.2 t ADT: 50

FM

Over: NO WHITE BREAST CREEK

072253604, Clarke, IA

Built 1981 Load: 30.2 t ADT: 50

FM

Over: OTTER CREEK

073240104, Clarke, IA

Built 1980 Load: 30.2 t ADT: 71

FM

Over: WHITE BREAST CREEK

072252006, Clarke, IA

Built 1962 Load: 30.4 t ADT: 180

FM

Over: BRANCH OTTER CREEK

073242902, Clarke, IA

Built 1972 Load: 30.4 t ADT: 319

FM

Over: WEST CREEK

073273604, Clarke, IA

Built 1982 Load: 30.4 t ADT: 40

FM

Over: SOUTH RIVER

073271204, Clarke, IA

Built 1968 Load: 30.5 t ADT: 29

LOCAL

Over: WHITE BREAST CREEK

072253006, Clarke, IA

Built 1969 Load: 30.6 t ADT: 50

LOCAL

Over: BR SQUAW CREEK

073262504, Clarke, IA

Built 1979 Load: 30.7 t ADT: 20

NB I-35

Over: WEST CREEK

2.5 MI. NORTH OF IA 152, Clarke, IA

Built 2012 Load: 32.4 t ADT: 9,400

LOCAL

Over: STREAM (LWC)

072241204, Clarke, IA

Built 1998 Load: 32.7 t ADT: 34

FM

Over: SQUAW CREEK

072250603, Clarke, IA

Built 1994 Load: 32.7 t ADT: 658

FM

Over: SOUTH WEST CREEK

072261301, Clarke, IA

Built 1968 Load: 32.7 t ADT: 180

FM

Over: WHITE BREAST CREEK

072262102, Clarke, IA

Built 1985 Load: 32.7 t ADT: 240

GRIFFITH

Over: SMALL STREAM

072242703, Clarke, IA

Built 1969 Load: 32.7 t ADT: 67

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