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)

350TH ST

Good

Over: WATERMAN CREEK

Waterman Creek @ 350th St, O'Brien, IA

Built 2017 Load: 42.9 t ADT: 72

TANAGER AVE

Good

Over: WATERMAN CREEK

097401101, O'Brien, IA

Built 2022 Load: 43.4 t ADT: 35

LOCAL

Good

Over: EPPING CREEK

097403602, O'Brien, IA

Built 1985 Load: 43.4 t ADT: 72

FM

Good

Over: WATERMAN CR

094391401, O'Brien, IA

Built 2005 Load: 43.7 t ADT: 45

WILSON AVE

Good

Over: WATERMAN CREEK

94390304, O'Brien, IA

Built 2020 Load: 43.9 t ADT: 21

VAN BUREN AVE

Good

Over: WATERMAN CREEK

97390702, O'Brien, IA

Built 2020 Load: 44.4 t ADT: 15

LOCAL

Good

Over: WOLF CREEK

097421901, O'Brien, IA

Built 1991 Load: 45.0 t ADT: 26

NEST AVE

Good

Over: LITTLE FLOYD RIVER

096420902, O'Brien, IA

Built 2012 Load: 45.4 t ADT: 46

LOCAL

Good

Over: JORDAN CREEK

095393303, O'Brien, IA

Built 1995 Load: 46.3 t ADT: 35

LOCAL

Good

Over: MILL CREEK

096412402, O'Brien, IA

Built 1988 Load: 48.0 t ADT: 15

LOCAL

Good

Over: LITTLE FLOYD RIVER

096420102, O'Brien, IA

Built 1992 Load: 48.0 t ADT: 41

FM

Good

Over: FLOYD RIVER

097410901, O'Brien, IA

Built 2001 Load: 48.2 t ADT: 71

FM

Good

Over: MURRAY CREEK

094390808, O'Brien, IA

Built 1987 Load: 49.6 t ADT: 880

ORIOLE AVE

Good

Over: SO BR LITTLE FLOYD RIVER

096410702, O'Brien, IA

Built 1989 Load: 49.9 t ADT: 409

LOCAL

Good

Over: FLOYD RIVER

097421202, O'Brien, IA

Built 1995 Load: 52.6 t ADT: 21

IA 60 SB

Good

Over: FLOYD RIVER

2.5 mi. N of Jct. US 18, O'Brien, IA

Built 2004 Load: 53.9 t ADT: 2,650

IA 60 NB

Good

Over: FLOYD RIVER

2.5 mi N of Jct US 18, O'Brien, IA

Built 2004 Load: 53.9 t ADT: 2,650

FM

Good

Over: MILL CREEK

094413301, O'Brien, IA

Built 2008 Load: 59.0 t ADT: 159

SEC RD

Poor

Over: WATERMAN CR

094390303, O'Brien, IA

Built 1915 Load: 12.4 t

LOCAL SEC RD

Poor

Over: GINGER CR

094400601, O'Brien, IA

Built 1900 Load: 19.4 t ADT: 15

FM

Poor

Over: WATERMAN CREEK

097401201, O'Brien, IA

Built 2003 Load: 19.6 t ADT: 34

LOCAL SEC RD

Poor

Over: LITTLE WATERMAN CR

095390401, O'Brien, IA

Built 1919 Load: 20.1 t ADT: 5

LOCAL

Poor

Over: W BR MILL CREEK

096413302, O'Brien, IA

Built 1925 Load: 26.9 t ADT: 26

LOCAL

Poor

Over: BARRY CREEK

095401202, O'Brien, IA

Built 1938 Load: 27.2 t ADT: 21

FM

Poor

Over: WILLOW CREEK

094401502, O'Brien, IA

Built 1964 Load: 27.5 t ADT: 279

IA 10

Poor

Over: MUD CREEK

1.9 mi W of SR L48, O'Brien, IA

Built 1951 Load: 29.7 t ADT: 1,740

FM

Poor

Over: LITTLE FLOYD RIVER

096420802, O'Brien, IA

Built 1968 Load: 30.4 t ADT: 50

LOCAL SEC RD

Poor

Over: WILLOW CR

094400203, O'Brien, IA

Built 1919 Load: 30.7 t ADT: 26

SEC RD

Poor

Over: JORDAN CREEK

094390303, O'Brien, IA

Built 1916 Load: 32.7 t

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