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)

Sort:

WILSON DR

Over: STREAM

074183403, Marion, IA

Built 2012 Load: 23.3 t ADT: 51

FM

Over: OVER BNSF RR

076203304, Marion, IA

Built 1966 Load: 23.3 t ADT: 190

LOCAL

Over: ENGLISH CREEK

075191006, Marion, IA

Built 1953 Load: 23.4 t ADT: 187

LOCAL

Over: FLY CREEK

076213108, Marion, IA

Built 1976 Load: 23.9 t ADT: 41

LOCAL

Over: STREAM

077200204, Marion, IA

Built 1997 Load: 23.9 t ADT: 26

IA 316

Over: NS & BNSF RR

2.4 Mi. N of IA 5, Marion, IA

Built 1967 Load: 24.2 t ADT: 990

115TH PL

Over: TETER CREEK

076201404, Marion, IA

Built 2013 Load: 24.5 t ADT: 26

LOCAL

Over: WALNUT CREEK

077210301, Marion, IA

Built 1999 Load: 24.5 t ADT: 62

FM

Over: BUTCHER CREEK

075200402, Marion, IA

Built 1968 Load: 25.8 t ADT: 190

FM

Over: SMALL STREAM

076182206, Marion, IA

Built 1960 Load: 26.2 t ADT: 3,550

FM

Over: STREAM

077182102, Marion, IA

Built 1962 Load: 26.3 t ADT: 90

FM

Over: SMALL STREAM

077191703, Marion, IA

Built 1962 Load: 26.3 t ADT: 60

FM

Over: WALNUT CREEK

075182004, Marion, IA

Built 1987 Load: 26.9 t ADT: 1,280

DUBUQUE ST

Over: STREAM

077192501, Marion, IA

Built 1968 Load: 27.5 t ADT: 41

FM

Over: ENGLISH

075181306, Marion, IA

Built 1980 Load: 27.8 t ADT: 440

LOCAL

Over: WINN BRANCH CREEK

074212903, Marion, IA

Built 1976 Load: 28.3 t ADT: 11

LOCAL

Over: ENGLISH CREEK

075193004, Marion, IA

Built 1986 Load: 28.8 t ADT: 82

FM

Over: ENGLISH CREEK

075192006, Marion, IA

Built 1978 Load: 29.1 t ADT: 140

LOCAL

Over: WHITEBREAST CREEK

074211702, Marion, IA

Built 1986 Load: 29.7 t ADT: 62

FM

Over: THUNDER CREEK

077182804, Marion, IA

Built 1975 Load: 30.0 t ADT: 330

LOCAL

Over: STREAM

074202903, Marion, IA

Built 1975 Load: 30.4 t ADT: 62

ATTICA RD

Over: COMPETINE CREEK

075190712, Marion, IA

Built 1925 Load: 30.4 t ADT: 3,020

FM

Over: OVER UP RR

074211407, Marion, IA

Built 1961 Load: 30.7 t ADT: 1,100

FM

Over: BRUSH CREEK

077201401, Marion, IA

Built 1968 Load: 32.0 t ADT: 120

IA 5

Over: WALNUT CREEK

0.9 MILES NORTH OF SR G76, Marion, IA

Built 1925 Load: 32.2 t ADT: 3,570

LOCAL

Over: HAWK RUN CREEK

075211201, Marion, IA

Built 1988 Load: 32.2 t ADT: 62

FM

Over: SMALL STREAM

074190402, Marion, IA

Built 1982 Load: 32.7 t ADT: 90

FM

Over: SMALL STREAM

074191908, Marion, IA

Built 1982 Load: 32.7 t ADT: 70

168TH PLACE

Over: STREAM

074192706, Marion, IA

Built 2018 Load: 32.7 t ADT: 34

G76

Over: SMALL STREAM

074202401, Marion, IA

Built 1996 Load: 32.7 t ADT: 400

FM

Over: VAN ZANTE CREEK

077180504, Marion, IA

Built 1982 Load: 32.7 t ADT: 40

FM

Over: VAN ZANTE CREEK

077191202, Marion, IA

Built 1982 Load: 32.7 t ADT: 100

LOCAL

Over: STREAM

077192804, Marion, IA

Built 1995 Load: 32.7 t ADT: 113

FM

Over: HICKORY CREEK

074202401, Marion, IA

Built 1945 Load: 32.9 t ADT: 400

FM

Over: COON CREEK

075210401, Marion, IA

Built 1982 Load: 33.0 t ADT: 40

LOCAL

Over: STREAM

077211203, Marion, IA

Built 1997 Load: 33.3 t ADT: 30

240TH PLACE

Over: SKUNK RIVER OVERFLOW

077181403, Marion, IA

Built 1946 Load: 33.4 t ADT: 220

FM

Over: SKUNK RIVER

077180304, Marion, IA

Built 1948 Load: 34.7 t ADT: 1,300

Co. Highway

Over: Des Moines River

Red Rock Dam, Marion, IA

Built 1967 Load: 34.7 t ADT: 3,750

LOCAL

Over: STREAM

076212501, Marion, IA

Built 2000 Load: 35.6 t ADT: 35

S 45

Over: WHITE BREAST CREEK

075212606, Marion, IA

Built 1979 Load: 36.8 t ADT: 1,810

LOCAL

Over: WALNUT CREEK

075182204, Marion, IA

Built 1988 Load: 37.2 t ADT: 82

FM

Over: THUNDER CREEK

077182608, Marion, IA

Built 1987 Load: 37.6 t ADT: 400

IA 92

Over: OVER BNSF RR

1.4 mi. W of Jct. SR T25, Marion, IA

Built 1978 Load: 38.6 t ADT: 3,240

IA 5

Over: NORTH CEDAR CREEK

1.4 MI. S of S.R. G71, Marion, IA

Built 1983 Load: 39.3 t ADT: 3,340

NB IA 5 & WB 92

Over: WHITE BREAST CREEK

2.7 MI. N OF JCT. Iowa 14, Marion, IA

Built 1978 Load: 40.1 t ADT: 4,200

LOCAL

Over: CROW CREEK

075212001, Marion, IA

Built 1997 Load: 40.5 t ADT: 51

ELKHORN ST

Over: STREAM

077182805, Marion, IA

Built 2005 Load: 42.5 t ADT: 135

G-71

Over: CEDAR CREEK

074181401, Marion, IA

Built 1990 Load: 45.1 t ADT: 920

LOCAL

Over: VAN ZANTE CREEK

077191102, Marion, IA

Built 1970 Load: 50.2 t ADT: 47

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