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)

IA 60 SB

Unknown

Over: US 18

At Jct. U.S. 18, O'Brien, IA

Built 2004 ADT: 3,150

IA 60 NB

Unknown

Over: U.S. 18

At Jct. U.S. 18, O'Brien, IA

Built 2004 ADT: 3,150

NEST AVENUE

Unknown

Over: IA 60

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

Built 2004 ADT: 5,200

330TH STREET

Unknown

Over: IA 60

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

Built 2005 ADT: 5,300

MONROE AVE

Unknown

Over: IA 60

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

Built 2005 ADT: 5,500

LOCAL SEC RD

Fair

Over: MURRAY CR

094391602, O'Brien, IA

Built 1900 Load: 4.7 t ADT: 15

FM

Fair

Over: SMALL UN-NAMED CREEK

097391101, O'Brien, IA

Built 1996 Load: 9.3 t ADT: 30

LOCAL

Fair

Over: FLOYD RIVER

097421002, O'Brien, IA

Built 1900 Load: 11.0 t ADT: 26

LOCAL

Fair

Over: MILL CREEK

094411602, O'Brien, IA

Built 1924 Load: 11.1 t ADT: 50

LOCAL

Fair

Over: MILL CREEK

094410301, O'Brien, IA

Built 1924 Load: 12.9 t ADT: 35

LOCAL SEC RD

Fair

Over: WATERMAN CREEK

097391901, O'Brien, IA

Built 1955 Load: 14.3 t ADT: 35

LOCAL

Fair

Over: LAMKIN CREEK

096422101, O'Brien, IA

Built 1945 Load: 16.2 t ADT: 35

LOCAL SEC RD

Fair

Over: MCCREATH CR

095391701, O'Brien, IA

Built 1940 Load: 16.5 t ADT: 15

LOCAL

Fair

Over: LANGE CREEK

094411902, O'Brien, IA

Built 1954 Load: 17.2 t ADT: 62

LOCAL

Fair

Over: LITTLE WATERMAN CREEK

096402402, O'Brien, IA

Built 1940 Load: 17.5 t ADT: 30

LOCAL

Fair

Over: ENGELS CREEK

097421302, O'Brien, IA

Built 1932 Load: 17.8 t ADT: 21

FM

Fair

Over: DRAINAGE WAY

094391501, O'Brien, IA

Built 1946 Load: 18.1 t ADT: 60

LOCAL SEC RD

Fair

Over: NELSON CREEK

094412402, O'Brien, IA

Built 1941 Load: 18.1 t ADT: 41

LOCAL

Fair

Over: DRY RUN

095400701, O'Brien, IA

Built 1947 Load: 18.1 t ADT: 50

LOCAL

Fair

Over: MILL CREEK

096412401, O'Brien, IA

Built 1939 Load: 18.1 t ADT: 41

US 18

Fair

Over: STREAM

0.2 mi. W of SR M22, O'Brien, IA

Built 1959 Load: 18.1 t ADT: 3,210

LOCAL

Fair

Over: WATERMAN CREEK

094392305, O'Brien, IA

Built 1950 Load: 18.3 t ADT: 41

FM

Fair

Over: WHISKEY CREEK

094413202, O'Brien, IA

Built 1927 Load: 18.5 t ADT: 34

LOCAL

Fair

Over: MILL CREEK

096412602, O'Brien, IA

Built 1935 Load: 18.8 t ADT: 15

LOCAL

Fair

Over: OCHEYEDAN RIVER

097390102, O'Brien, IA

Built 1933 Load: 19.4 t ADT: 30

LOCAL RD

Fair

Over: LITTLE FLOYD RIVER

097412802, O'Brien, IA

Built 1959 Load: 19.4 t ADT: 50

FM

Fair

Over: DEEP CREEK

094423201, O'Brien, IA

Built 1934 Load: 19.8 t ADT: 15

REDWING AVE

Fair

Over: FLOYD RIVER

097410302, O'Brien, IA

Built 2005 Load: 19.8 t ADT: 21

FM

Fair

Over: MCCREATH CREEK

095390801, O'Brien, IA

Built 1953 Load: 20.1 t ADT: 797

FM

Fair

Over: JORDAN CREEK

095393202, O'Brien, IA

Built 1969 Load: 20.1 t ADT: 948

LOCAL

Fair

Over: GRASS WATERWAY

096410402, O'Brien, IA

Built 1954 Load: 20.1 t ADT: 50

290TH ST

Fair

Over: FLOYD RIVER

097411401, O'Brien, IA

Built 2018 Load: 20.1 t ADT: 26

FM

Fair

Over: SMALL UN-NAMED CREEK

097421201, O'Brien, IA

Built 1969 Load: 20.1 t ADT: 509

FM

Fair

Over: SMALL UN-NAMED CREEK

095410302, O'Brien, IA

Built 1992 Load: 20.1 t ADT: 917

FM

Fair

Over: SMALL UN-NAMED CREEK

095391901, O'Brien, IA

Built 1939 Load: 20.4 t ADT: 50

FM

Fair

Over: OCHEYEDAN RIVER OVERFLOW

097391201, O'Brien, IA

Built 1951 Load: 20.4 t ADT: 20

LOCAL

Fair

Over: FLOYD RIVER

097412303, O'Brien, IA

Built 2009 Load: 20.4 t ADT: 15

LOCAL

Fair

Over: NELSON CR

094412502, O'Brien, IA

Built 1938 Load: 20.7 t ADT: 15

410TH ST

Fair

Over: JOHNSON CREEK

095411801, O'Brien, IA

Built 2019 Load: 20.7 t ADT: 21

LOCAL

Fair

Over: SO BR LITTLE FLOYD RIVER

096411102, O'Brien, IA

Built 1937 Load: 21.1 t ADT: 30

LOCAL SEC RD

Fair

Over: STOFFERAN CREEK

095 42 04 02, O'Brien, IA

Built 2010 Load: 21.4 t ADT: 26

LOCAL SEC RD

Fair

Over: WILLOW CR

094401102, O'Brien, IA

Built 2001 Load: 21.7 t ADT: 41

MONROE AVE

Fair

Over: DEEP CREEK

094422902, O'Brien, IA

Built 2007 Load: 22.0 t ADT: 11

LOCAL SEC RD

Fair

Over: NELSON CR

094412601, O'Brien, IA

Built 1935 Load: 22.4 t ADT: 30

LOCAL SEC RD

Fair

Over: LANGE CREEK

094422306, O'Brien, IA

Built 1954 Load: 22.4 t ADT: 62

LOCAL SEC RD

Fair

Over: WATERMAN CREEK

095392701, O'Brien, IA

Built 1951 Load: 22.4 t ADT: 26

FM

Fair

Over: FLOYD RIVER

097422902, O'Brien, IA

Built 1962 Load: 22.4 t ADT: 518

FM

Fair

Over: WATERMAN CREEK

094390314, O'Brien, IA

Built 1961 Load: 22.5 t ADT: 210

LOCAL SEC RD

Fair

Over: MUD CREEK

094420202, O'Brien, IA

Built 1934 Load: 22.7 t ADT: 103

LOCAL

Fair

Over: LAKE CREEK

095400901, O'Brien, IA

Built 1992 Load: 22.7 t ADT: 21

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