Mahaska County, IA

219 public highway bridges

Mahaska County Bridge Snapshot

Mahaska County, Iowa contains 219 public highway bridges in the FHWA National Bridge Inventory. Roughly 24.7% are rated “Good,” 38.8% “Fair,” 33.3% “Poor,” and 33.3% 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.

219
Total Bridges
24.7%
Good
33.3%
Poor
33.3%
Structurally Deficient

Condition Distribution

Good
24.7% (54)
Fair
38.8% (85)
Poor
33.3% (73)
SD
33.3% (73)

All Bridges (219)

EB/SB IA 163

Unknown

Over: IA 92

AT JCT. OF IA 92, Mahaska, IA

Built 1996 ADT: 3,650

WB/NB IA 163

Unknown

Over: IA 92

AT JCT. OF IA 92, Mahaska, IA

Built 1996 ADT: 3,650

INDIAN WAY

Unknown

Over: IA 163

0.8 MI. E OF JCT. IA 92, Mahaska, IA

Built 1996 ADT: 7,900

263RD ST

Unknown

Over: IA 163

1.7 MI. E OF JCT. IA 92, Mahaska, IA

Built 1995 ADT: 7,900

US 63 SB

Unknown

Over: IA 163

AT JCT. OF IA 163, Mahaska, IA

Built 1996 ADT: 7,500

SR G 55

Unknown

Over: US 63 & IA 163

AT W JCT. OF Iowa 163, Mahaska, IA

Built 1996 ADT: 5,800

MERINO AVE

Unknown

Over: US 63

1.8 mi. N of Jct. IA #137, Mahaska, IA

Built 2002 ADT: 10,200

IA 23

Fair

Over: STREAM

1.2 MILES SOUTH OF SR V13, Mahaska, IA

Built 1928 Load: 5.7 t ADT: 2,130

FM

Fair

Over: MOON CREEK

077141801, Mahaska, IA

Built 1965 Load: 14.6 t ADT: 190

LOCAL

Fair

Over: DRAINAGE

077142704, Mahaska, IA

Built 1954 Load: 14.9 t ADT: 15

FM

Fair

Over: MUCHAKINOCK CR

074160203, Mahaska, IA

Built 1960 Load: 15.7 t ADT: 80

FM

Fair

Over: DRAINAGE DITCH #2

074160403, Mahaska, IA

Built 1951 Load: 15.7 t ADT: 40

LOCAL

Fair

Over: N COAL CREEK

074170905, Mahaska, IA

Built 1961 Load: 15.7 t ADT: 11

LOCAL

Fair

Over: DRAINAGE

074171904, Mahaska, IA

Built 1955 Load: 15.7 t ADT: 60

FM

Fair

Over: BALLINGER CREEK

076170205, Mahaska, IA

Built 1960 Load: 15.7 t ADT: 35

LOCAL

Fair

Over: DRAINAGE

077151003, Mahaska, IA

Built 1973 Load: 15.7 t ADT: 15

LOCAL

Fair

Over: DRAINAGE

077172004, Mahaska, IA

Built 1955 Load: 15.7 t ADT: 20

LOCAL

Fair

Over: DRAINAGE

077173609, Mahaska, IA

Built 1955 Load: 15.7 t ADT: 50

LOCAL

Fair

Over: ST JOSEPHS CREEK

074160605, Mahaska, IA

Built 1953 Load: 15.9 t ADT: 80

LOCAL

Fair

Over: S COAL CREEK

074171112, Mahaska, IA

Built 1959 Load: 15.9 t ADT: 40

FM

Fair

Over: TURKEY RUN

074171506, Mahaska, IA

Built 1952 Load: 15.9 t ADT: 35

FM

Fair

Over: S COAL CREEK

074172004, Mahaska, IA

Built 1954 Load: 15.9 t ADT: 100

FM

Fair

Over: MIDDLE CREEK

077162202, Mahaska, IA

Built 1963 Load: 15.9 t ADT: 25

FM

Fair

Over: COAL CREEK

074170104, Mahaska, IA

Built 1948 Load: 16.3 t ADT: 80

FM

Fair

Over: MIDDLE CREEK

076152304, Mahaska, IA

Built 1950 Load: 17.1 t ADT: 20

FM

Fair

Over: MOON CREEK

077140605, Mahaska, IA

Built 1951 Load: 17.1 t ADT: 25

LOCAL

Fair

Over: MIDDLE CREEK

076152504, Mahaska, IA

Built 1965 Load: 17.6 t ADT: 30

LOCAL

Fair

Over: BLUFF CREEK

074172402, Mahaska, IA

Built 1948 Load: 18.0 t ADT: 50

IA 92

Fair

Over: STREAM

3.3 MI. W OF W JCT SR V13, Mahaska, IA

Built 1958 Load: 18.1 t ADT: 2,850

FM

Fair

Over: BLUFF CREEK

074162106, Mahaska, IA

Built 1957 Load: 18.5 t ADT: 110

IA 23

Fair

Over: CEDAR CREEK

0.6 mi S. of Jct. SR T-67, Mahaska, IA

Built 1969 Load: 19.2 t ADT: 2,130

LOCAL

Fair

Over: CEDAR CREEK

074151304, Mahaska, IA

Built 1963 Load: 20.1 t ADT: 71

FM

Fair

Over: BLUFF CREEK

074172602, Mahaska, IA

Built 1970 Load: 21.0 t ADT: 60

LOCAL

Fair

Over: N SKUNK RIVER

076141505, Mahaska, IA

Built 1975 Load: 21.6 t ADT: 26

LOCAL

Fair

Over: N SKUNK RIVER

077151703, Mahaska, IA

Built 1977 Load: 21.6 t ADT: 71

LOCAL

Fair

Over: OLIVE BRANCH CREEK

074140104, Mahaska, IA

Built 1971 Load: 22.1 t ADT: 50

LOCAL

Fair

Over: S COAL CREEK

074171104, Mahaska, IA

Built 1971 Load: 22.1 t ADT: 45

LOCAL

Fair

Over: BLUFF CREEK

074173303, Mahaska, IA

Built 1971 Load: 22.1 t ADT: 60

LOCAL

Fair

Over: MUCHAKINOCK CREEK

076172801, Mahaska, IA

Built 1973 Load: 22.1 t ADT: 26

LOCAL

Fair

Over: MIDDLE CREEK

077162602, Mahaska, IA

Built 1971 Load: 22.1 t ADT: 60

LOCAL

Fair

Over: MIDDLE CREEK

077162608, Mahaska, IA

Built 1971 Load: 22.1 t ADT: 50

LOCAL

Fair

Over: BALLINGER CREEK

077173608, Mahaska, IA

Built 1955 Load: 23.0 t ADT: 15

FM

Fair

Over: S ENGLISH RIVER

077140102, Mahaska, IA

Built 1952 Load: 23.1 t ADT: 25

LOCAL

Fair

Over: DRAINAGE

077142003, Mahaska, IA

Built 1951 Load: 24.5 t ADT: 30

LOCAL

Fair

Over: MUCHAKINOCK CREEK

075163405, Mahaska, IA

Built 1952 Load: 25.2 t ADT: 80

LOCAL

Fair

Over: DRAINAGE

076172804, Mahaska, IA

Built 1949 Load: 25.2 t ADT: 26

LOCAL

Fair

Over: CEDAR CREEK

074142802, Mahaska, IA

Built 1900 Load: 25.4 t ADT: 5

LOCAL

Fair

Over: MOON CREEK

077140705, Mahaska, IA

Built 1952 Load: 25.6 t ADT: 11

LOCAL

Fair

Over: E BR BUCKLEY CREEK

077170908, Mahaska, IA

Built 1953 Load: 25.9 t ADT: 15

FM

Fair

Over: SMALL STREAM

076151605, Mahaska, IA

Built 1979 Load: 26.4 t ADT: 300

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