Marion County, IA

204 public highway bridges

Marion County Bridge Snapshot

Marion County, Iowa contains 204 public highway bridges in the FHWA National Bridge Inventory. Roughly 36.8% are rated “Good,” 43.6% “Fair,” 12.3% “Poor,” and 12.3% 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.

204
Total Bridges
36.8%
Good
12.3%
Poor
12.3%
Structurally Deficient

Condition Distribution

Good
36.8% (75)
Fair
43.6% (89)
Poor
12.3% (25)
SD
12.3% (25)

All Bridges (204)

IA 5

Unknown

Over: IA 92 (S JCT)

At S jct. Iowa 92, Marion, IA

Built 1978 ADT: 3,010

OLD HWY 92

Unknown

Over: IA 92

3.9 MI. E OF E JCT.IOWA 5, Marion, IA

Built 1978 ADT: 3,840

CLARK ST

Unknown

Over: IA 163

2.5 MI. E OF SR G-28., Marion, IA

Built 1994 ADT: 7,100

IDAHO DR

Unknown

Over: IA 163

1.3 mi. W of SR T17, Marion, IA

Built 1994 ADT: 10,300

SR G28

Unknown

Over: IA 163

At Jct SR G28/Wash. St., Marion, IA

Built 1994 ADT: 9,100

IA 163 EB

Unknown

Over: SR G5T

At jct. SR G5T, Marion, IA

Built 1996 ADT: 1,165

IA 163 WB

Unknown

Over: SR G5T

Jct. SR G5T, Marion, IA

Built 1996 ADT: 1,165

IA 92 & SB IA 5

Unknown

Over: 110TH PLACE

1.6 mi. N of jct. IA 14, Marion, IA

Built 1978 ADT: 135

IA 92 & NB IA 5

Unknown

Over: 110TH PLACE

1.6 mi. N of jct. IA 14, Marion, IA

Built 1978 ADT: 135

SB IA 5 & IA 92

Unknown

Over: IA 14

At jct. Iowa 14, Marion, IA

Built 1978 ADT: 3,300

NB IA 5 & IA 92

Unknown

Over: IA 14

AT Jct. Iowa 14, Marion, IA

Built 1978 ADT: 3,300

IA 92 EB & IA 5 SB

Unknown

Over: 135TH PLACE

1.0 MI. S OF JCT IOWA #14, Marion, IA

Built 1978 ADT: 75

IA 92 WB & IA 5 NB

Unknown

Over: 135TH PLACE

1.0 MI. S OF JCT. IA 14, Marion, IA

Built 1978 ADT: 75

IA 92

Unknown

Over: 165TH AVE

2.0 MI. E OF E JCT IOWA 5, Marion, IA

Built 1978 ADT: 180

MCKIMBER STREET

Unknown

Over: IA 5 & IA 92

2.0 mi. N Jct. IA 14, Marion, IA

Built 1978 ADT: 4,920

FM

Fair

Over: CEDAR CREEK

074180203, Marion, IA

Built 1957 ADT: 20

LOCAL

Fair

Over: ENGLISH CREEK

075202304, Marion, IA

Built 2002

Ag and DNR Traffic

Fair

Over: Red Rock Pool

Marion Co.; S30, T76, R19, Marion, IA

Built 1920 Load: 7.8 t ADT: 10

Ag and DNR Traffic

Fair

Over: Red Rock Pool Channel

Marion Co., S22,T77N,R21, Marion, IA

Built 1955 Load: 9.0 t ADT: 30

FM

Fair

Over: HICKORY CREEK

074193304, Marion, IA

Built 1953 Load: 10.0 t ADT: 90

LOCAL

Fair

Over: STREAM

074202402, Marion, IA

Built 1973 Load: 14.0 t ADT: 16

FM

Fair

Over: SMALL STREAM

074210504, Marion, IA

Built 1950 Load: 14.9 t ADT: 45

LOCAL

Fair

Over: WILDCAT CREEK

076211202, Marion, IA

Built 1971 Load: 15.0 t ADT: 73

LOCAL

Fair

Over: STREAM

074190104, Marion, IA

Built 1960 Load: 15.7 t ADT: 145

LOCAL

Fair

Over: STREAM

074212404, Marion, IA

Built 1960 Load: 15.9 t ADT: 62

FM

Fair

Over: ENGLISH CREEK

074200403, Marion, IA

Built 1954 Load: 16.1 t ADT: 230

FM

Fair

Over: STREAM

075180606, Marion, IA

Built 1956 Load: 16.3 t ADT: 60

LOCAL

Fair

Over: CROW CREEK

075211703, Marion, IA

Built 1960 Load: 17.7 t ADT: 35

LOCAL

Fair

Over: STREAM

077212801, Marion, IA

Built 1975 Load: 17.7 t ADT: 123

FM

Fair

Over: LONG BRANCH CREEK

074201704, Marion, IA

Built 1960 Load: 18.1 t ADT: 60

LOCAL

Fair

Over: ENGLISH CREEK

074203006, Marion, IA

Built 1958 Load: 18.5 t ADT: 62

VIRGINIA DR

Fair

Over: STREAM

074182904, Marion, IA

Built 1968 Load: 19.2 t

LOCAL

Fair

Over: SMALL STREAM

074181406, Marion, IA

Built 1984 Load: 19.2 t ADT: 11

LOCAL

Fair

Over: CALHOUN CREEK

077200403, Marion, IA

Built 1961 Load: 20.1 t ADT: 41

IA 14

Fair

Over: DES MOINES RIVER & RES

1.2 MI. N OF SR G40, Marion, IA

Built 1965 Load: 20.2 t ADT: 3,820

FM

Fair

Over: WHITE BREAST CREEK

074210301, Marion, IA

Built 1955 Load: 20.4 t ADT: 110

IA 14

Fair

Over: BRUSH CREEK

0.2 MI. S OF S.R. G28, Marion, IA

Built 1965 Load: 21.0 t ADT: 3,820

FM

Fair

Over: PRAIRE CREEK

077201701, Marion, IA

Built 1968 Load: 21.0 t ADT: 70

LOCAL

Fair

Over: STREAM

077180702, Marion, IA

Built 1977 Load: 21.3 t ADT: 5

FM

Fair

Over: SKUNK RIVER

077182304, Marion, IA

Built 1954 Load: 21.6 t ADT: 220

FM

Fair

Over: CALHOUN CREEK

077201603, Marion, IA

Built 1969 Load: 21.6 t ADT: 110

LOCAL

Fair

Over: WALNUT CREEK

077210203, Marion, IA

Built 1969 Load: 21.6 t ADT: 73

LOCAL

Fair

Over: STREAM

074211504, Marion, IA

Built 1994 Load: 21.8 t ADT: 16

LOCAL

Fair

Over: STREAM

075181308, Marion, IA

Built 1976 Load: 21.8 t ADT: 16

LOCAL

Fair

Over: STREAM

075182104, Marion, IA

Built 2004 Load: 21.9 t ADT: 466

LOCAL

Fair

Over: COON CREEK

075210801, Marion, IA

Built 1961 Load: 22.1 t ADT: 35

LOCAL

Fair

Over: ENGLISH CREEK

074200903, Marion, IA

Built 1977 Load: 22.3 t ADT: 73

FM

Fair

Over: STREAM

075182547, Marion, IA

Built 1958 Load: 22.3 t ADT: 100

LOCAL

Fair

Over: STREAM

077180701, Marion, IA

Built 1977 Load: 22.7 t ADT: 35

LOCAL

Fair

Over: STREAM

074181903, Marion, IA

Built 1900 Load: 23.2 t ADT: 10

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