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)

US 59

Good

Over: MILL CREEK

0.4 mi. N of Jct. SR B24, O'Brien, IA

Built 1973 Load: 30.5 t ADT: 980

FM

Good

Over: WILLOW CREEK

95 42 30 02, O'Brien, IA

Built 2010 Load: 30.5 t ADT: 478

LOCAL

Good

Over: LITTLE FLOYD RIVER

096421001, O'Brien, IA

Built 1975 Load: 30.6 t ADT: 46

LOCAL

Good

Over: SO BR LITTLE FLOYD RIVER

096421201, O'Brien, IA

Built 1975 Load: 30.6 t ADT: 35

FAS MAJOR B-40

Good

Over: ROETZEL CREEK

095420801, O'Brien, IA

Built 2006 Load: 31.8 t ADT: 828

WILSON AVE

Good

Over: SMALL UNNAMED CREEK

097391102, O'Brien, IA

Built 2016 Load: 32.4 t ADT: 21

FM

Good

Over: FLOYD RIVER

097422102, O'Brien, IA

Built 1962 Load: 32.6 t ADT: 240

LOCAL SEC RD

Good

Over: LANGE CREEK SOUTH

094422601, O'Brien, IA

Built 1969 Load: 32.7 t ADT: 5

FM

Good

Over: SMALL UN-NAMED CREEK

097391302, O'Brien, IA

Built 1969 Load: 32.7 t ADT: 26

LOCAL SEC RD

Good

Over: SEWER CREEK

097393502, O'Brien, IA

Built 1991 Load: 32.7 t ADT: 26

LOCAL

Good

Over: FLOYD RIVER

097401801, O'Brien, IA

Built 1982 Load: 32.7 t ADT: 21

FM

Good

Over: WOLF CREEK

097420801, O'Brien, IA

Built 1966 Load: 32.7 t ADT: 469

LOCAL

Good

Over: WOLF CREEK

097421901, O'Brien, IA

Built 1900 Load: 32.7 t ADT: 26

LOCAL

Good

Over: MILL CREEK

096413401, O'Brien, IA

Built 1998 Load: 33.4 t ADT: 11

FM

Good

Over: OCHEYEDAN RIVER

097391201, O'Brien, IA

Built 1979 Load: 33.8 t ADT: 20

LOCAL

Good

Over: FLOYD RIVER

097411102, O'Brien, IA

Built 1986 Load: 34.1 t ADT: 50

ORIOLE AVE

Good

Over: JOHNSON CREEK

095410702, O'Brien, IA

Built 2015 Load: 34.3 t ADT: 210

FM

Good

Over: WATERMAN CREEK

096391702, O'Brien, IA

Built 1937 Load: 34.4 t ADT: 1,057

FM

Good

Over: SO BR LITTLE FLOYD RIVER

096410302, O'Brien, IA

Built 2009 Load: 34.7 t ADT: 459

LOCAL

Good

Over: SMALL UN-NAMED CREEK

096390301, O'Brien, IA

Built 1991 Load: 35.0 t ADT: 11

410TH ST

Good

Over: MILL CREEK

095 41 16 01, O'Brien, IA

Built 2012 Load: 35.3 t ADT: 21

FM

Good

Over: UNNAMED STREAM

096410602, O'Brien, IA

Built 1980 Load: 35.3 t ADT: 409

LOCAL

Good

Over: LITTLE FLOYD RIVER

097412801, O'Brien, IA

Built 1992 Load: 35.4 t ADT: 41

LOCAL

Good

Over: FLOYD RIVER

097401901, O'Brien, IA

Built 2008 Load: 35.6 t ADT: 35

LOCAL SEC RD

Good

Over: WATERMAN CREEK

097393001, O'Brien, IA

Built 1988 Load: 36.1 t ADT: 50

FM

Good

Over: DRY RUN

095412401, O'Brien, IA

Built 2001 Load: 36.4 t ADT: 60

FM

Good

Over: LITTLE FLOYD RIVER

097412902, O'Brien, IA

Built 1992 Load: 36.4 t ADT: 489

LOCAL

Good

Over: FLOYD RIVER

097401902, O'Brien, IA

Built 1987 Load: 36.6 t ADT: 15

SORRELL AVE

Good

Over: GINGER CREEK

095402901, O'Brien, IA

Built 2016 Load: 37.2 t ADT: 11

STARLING AVE

Good

Over: DRY RUN

095403302, O'Brien, IA

Built 2018 Load: 37.3 t ADT: 30

REDWOOD AVE

Good

Over: DRY RUN

095412602, O'Brien, IA

Built 2023 Load: 37.6 t ADT: 35

POLK AVE

Good

Over: DRY RUN CREEK

095412802, O'Brien, IA

Built 2021 Load: 37.6 t ADT: 30

WARBLER AVE

Good

Over: LITTLE WATERMAN CR

096393302, O'Brien, IA

Built 2019 Load: 37.9 t ADT: 35

IA 60 SB

Good

Over: DME RR

0.6 mi S of jct US 18, O'Brien, IA

Built 2005 Load: 37.9 t ADT: 2,600

IA 60 NB

Good

Over: DME RR

0.6 mi. S of jct. US 18, O'Brien, IA

Built 2005 Load: 37.9 t ADT: 2,600

FM

Good

Over: FLOYD RIVER

097423002, O'Brien, IA

Built 1989 Load: 38.2 t ADT: 549

WHITE AVE

Good

Over: SEWER CREEK

097393402, O'Brien, IA

Built 2000 Load: 38.3 t ADT: 50

LOCAL SEC RD

Good

Over: LANGE CREEK SOUTH

094422402, O'Brien, IA

Built 2001 Load: 38.5 t ADT: 26

B46 420TH ST

Good

Over: WATERMAN CREEK

095392303, O'Brien, IA

Built 2022 Load: 39.9 t ADT: 26

POLK AVE

Good

Over: MILL CREEK

095411602, O'Brien, IA

Built 2022 Load: 39.9 t ADT: 11

POLK AVE

Good

Over: MILL CREEK

095413302, O'Brien, IA

Built 2021 Load: 39.9 t ADT: 46

340TH ST

Good

Over: WATERMAN CREEK

096390701, O'Brien, IA

Built 2021 Load: 39.9 t ADT: 41

NEST AVE

Good

Over: LAMKIN CREEK

09642090201, O'Brien, IA

Built 2014 Load: 40.0 t ADT: 46

MONROE AVE

Good

Over: FLOYD RIVER OVERFLOW

097422902, O'Brien, IA

Built 2020 Load: 40.5 t ADT: 518

FM

Good

Over: MILL CREEK

094411502, O'Brien, IA

Built 2000 Load: 41.7 t ADT: 828

LOCAL SEC RD

Good

Over: BARRY CREEK

095391701, O'Brien, IA

Built 1976 Load: 41.8 t ADT: 15

FM

Good

Over: LAMKIN CREEK

096422202, O'Brien, IA

Built 1976 Load: 41.8 t ADT: 1,337

LOCAL

Good

Over: ENGELS CREEK

097422202, O'Brien, IA

Built 1981 Load: 41.8 t ADT: 21

LOCAL

Good

Over: SWEENEY CREEK

097423602, O'Brien, IA

Built 1995 Load: 41.9 t ADT: 30

FM

Good

Over: FLOYD RIVER

097421102, O'Brien, IA

Built 2004 Load: 42.5 t ADT: 199

Read our methodology — how this data is sourced, computed, and verified.

Related

Browse all → | Rankings →
Data sourced from official U.S. government datasets. See our methodology for details. Retrieved and formatted by PlainBridges Editorial