O'Brien County, IA

229 public highway bridges

O'Brien County Bridge Snapshot

O'Brien County, Iowa contains 229 public highway bridges in the FHWA National Bridge Inventory. Roughly 52.4% are rated “Good,” 40.6% “Fair,” 4.8% “Poor,” and 4.8% 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.

229
Total Bridges
52.4%
Good
4.8%
Poor
4.8%
Structurally Deficient

Condition Distribution

Good
52.4% (120)
Fair
40.6% (93)
Poor
4.8% (11)
SD
4.8% (11)

All Bridges (229)

FM

Good

Over: WATERMAN CREEK

097400102, O'Brien, IA

Built 1965 Load: 20.1 t ADT: 309

FM

Good

Over: PLESSIS CREEK

097402402, O'Brien, IA

Built 1964 Load: 20.1 t ADT: 309

LOCAL

Good

Over: FLOYD RIVER

097422101, O'Brien, IA

Built 1954 Load: 21.0 t ADT: 35

SILVER AVE

Good

Over: NELSON CREEK

09440180210, O'Brien, IA

Built 2016 Load: 21.4 t ADT: 45

FM

Good

Over: DRY RUN

095400605, O'Brien, IA

Built 1998 Load: 22.0 t ADT: 1,168

LOCAL SEC RD

Good

Over: DRAINAGE WAY

094421901, O'Brien, IA

Built 2008 Load: 22.7 t ADT: 30

LOCAL SEC RD

Good

Over: SMALL UN-NAMED CREEK

094421902, O'Brien, IA

Built 2006 Load: 22.7 t ADT: 30

LOCAL SEC RD

Good

Over: MCCREATH CR

095391602, O'Brien, IA

Built 2001 Load: 22.7 t ADT: 15

440TH ST

Good

Over: DRY RUN

095403301, O'Brien, IA

Built 2012 Load: 22.7 t ADT: 30

LOCAL

Good

Over: WILLOW CREEK

096393601, O'Brien, IA

Built 2004 Load: 22.7 t ADT: 11

LOCAL

Good

Over: SO BR LITTLE FLOYD RIVER

096411001, O'Brien, IA

Built 2002 Load: 22.7 t ADT: 5

IA 60

Good

Over: ENGELS CREEK

1.5 mi. N of US 18, O'Brien, IA

Built 2006 Load: 22.7 t ADT: 5,300

PIERCE AVE

Good

Over: W BR MILL CREEK

096412902, O'Brien, IA

Built 1966 Load: 23.0 t ADT: 15

450TH ST

Good

Over: MUD CREEK

094 41 06 01, O'Brien, IA

Built 2011 Load: 23.5 t ADT: 26

FM

Good

Over: WATERMAN CREEK

095391001, O'Brien, IA

Built 1953 Load: 24.3 t ADT: 797

FM

Good

Over: MILL CREEK

095412001, O'Brien, IA

Built 1985 Load: 24.5 t ADT: 50

300TH ST

Good

Over: PLESSIS CREEK

097402301, O'Brien, IA

Built 2017 Load: 25.3 t ADT: 21

LOCAL

Good

Over: MURRAY CREEK

094391505, O'Brien, IA

Built 1991 Load: 25.6 t ADT: 11

LOCAL SEC RD

Good

Over: DEEP CR

094421902, O'Brien, IA

Built 1989 Load: 25.9 t ADT: 30

LOCAL RD

Good

Over: NELSON CREEK

094401702, O'Brien, IA

Built 1990 Load: 26.6 t ADT: 50

FM

Good

Over: LANGE CR

094411702, O'Brien, IA

Built 1967 Load: 26.6 t ADT: 45

POLK AVE

Good

Over: SO BR LITTLE FLOYD RIVER

096410902, O'Brien, IA

Built 2015 Load: 26.6 t ADT: 30

LOCAL

Good

Over: SMALL UN-NAMED CREEK

094403102, O'Brien, IA

Built 1978 Load: 26.9 t ADT: 62

WARBLER AVE

Good

Over: JORDAN CREEK

09539330210, O'Brien, IA

Built 2016 Load: 26.9 t ADT: 26

LOCAL

Good

Over: LITTLE WATERMAN CREEK

096402502, O'Brien, IA

Built 2006 Load: 26.9 t ADT: 21

LOCAL

Good

Over: PLESSIS CREEK

097402501, O'Brien, IA

Built 1999 Load: 27.2 t ADT: 30

FM

Good

Over: LITTLE FLOYD RIVER

096421002, O'Brien, IA

Built 1987 Load: 27.3 t ADT: 1,337

LOCAL SEC RD

Good

Over: DRY RUN

094400502, O'Brien, IA

Built 1949 Load: 27.6 t ADT: 21

STARLING AVE

Good

Over: WILLOW CREEK

094 40 16 02 10, O'Brien, IA

Built 2014 Load: 27.9 t ADT: 26

SILVER AVE

Good

Over: WILLOW CREEK

094401902, O'Brien, IA

Built 2017 Load: 27.9 t ADT: 40

480TH ST

Good

Over: WILLOW CREEK

094 40 20 01 10, O'Brien, IA

Built 2018 Load: 27.9 t ADT: 15

SORREL AVE

Good

Over: WILLOW CREEK

094402002, O'Brien, IA

Built 2017 Load: 27.9 t ADT: 30

420TH ST

Good

Over: MCCREATH CREEK

095392101, O'Brien, IA

Built 2015 Load: 27.9 t ADT: 34

OLIVE AVE

Good

Over: MUD CREEK

094420102, O'Brien, IA

Built 2012 Load: 28.2 t ADT: 41

FM

Good

Over: JOHNSON CREEK

095412001, O'Brien, IA

Built 2000 Load: 28.2 t ADT: 50

LOCAL

Good

Over: SO BR LITTLE FLOYD RIVER

096410802, O'Brien, IA

Built 2001 Load: 28.2 t ADT: 46

FM

Good

Over: SMALL UN-NAMED CREEK

097391002, O'Brien, IA

Built 1988 Load: 28.2 t ADT: 509

LOCAL

Good

Over: COLE CREEK

094410202, O'Brien, IA

Built 1998 Load: 28.5 t ADT: 35

FM

Good

Over: SMALL UN-NAMED CREEK

096391001, O'Brien, IA

Built 1998 Load: 28.5 t ADT: 240

330TH ST

Good

Over: SMALL UN-NAMED CREEK

096400101, O'Brien, IA

Built 2004 Load: 28.5 t ADT: 62

LOCAL

Good

Over: SMALL UN-NAMED CREEK

096400102, O'Brien, IA

Built 1991 Load: 28.5 t ADT: 50

SORREL AVE

Good

Over: DRY RUN

096403202, O'Brien, IA

Built 2017 Load: 28.5 t ADT: 21

500TH ST

Good

Over: DOG CREEK

0943934, O'Brien, IA

Built 2009 Load: 29.0 t ADT: 10

LOCAL

Good

Over: WATERMAN CREEK

097391801, O'Brien, IA

Built 1978 Load: 29.2 t ADT: 15

FM

Good

Over: FLOYD RIVER

097410802, O'Brien, IA

Built 1986 Load: 29.5 t ADT: 489

FM

Good

Over: WILLOW CREEK

095420602, O'Brien, IA

Built 1987 Load: 29.8 t ADT: 609

FM

Good

Over: MILL CREEK

096413402, O'Brien, IA

Built 1971 Load: 30.0 t ADT: 459

LOCAL

Good

Over: WATERMAN CREEK

096390601, O'Brien, IA

Built 1982 Load: 30.2 t ADT: 62

LOCAL

Good

Over: WATERMAN CREEK

097393002, O'Brien, IA

Built 1983 Load: 30.2 t ADT: 72

LOCAL

Good

Over: FLOYD RIVER

097410902, O'Brien, IA

Built 1981 Load: 30.2 t ADT: 30

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