Union County, IA

153 public highway bridges

Union County Bridge Snapshot

Union County, Iowa contains 153 public highway bridges in the FHWA National Bridge Inventory. Roughly 30.7% are rated “Good,” 34% “Fair,” 35.3% “Poor,” and 35.3% 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.

153
Total Bridges
30.7%
Good
35.3%
Poor
35.3%
Structurally Deficient

Condition Distribution

Good
30.7% (47)
Fair
34% (52)
Poor
35.3% (54)
SD
35.3% (54)

All Bridges (153)

LOCAL

Fair

Over: OVER BNSF RR

072310902, Union, IA

Built 1997 Load: 42.3 t ADT: 91

FM POLE RD

Fair

Over: CREEK

072302002, Union, IA

Built 1954 Load: 47.0 t ADT: 568

LOCAL

Good

Over: TWELVE MILE CREEK

071283603, Union, IA

Built 1992 Load: 18.2 t ADT: 15

LOCAL

Good

Over: STREAM

072291104, Union, IA

Built 2004 Load: 23.1 t ADT: 5

230TH ST

Good

Over: SEVEN MILE CREEK

071281203, Union, IA

Built 2012 Load: 25.6 t ADT: 20

FM

Good

Over: FOUR MILE CREEK

072281104, Union, IA

Built 2009 Load: 25.6 t ADT: 26

LOCAL

Good

Over: SMALL STREAM

071290202, Union, IA

Built 2004 Load: 28.3 t ADT: 46

FM

Good

Over: SMALL STREAM

072312603, Union, IA

Built 2003 Load: 28.3 t ADT: 89

US 169

Good

Over: BNSF RR

0.2 MI. S OF S JCT. US 34, Union, IA

Built 1980 Load: 30.0 t ADT: 3,870

H29 168TH ST

Good

Over: FOUR MILE CREEK

072280150, Union, IA

Built 2015 Load: 32.4 t ADT: 40

170TH ST

Good

Over: TWO MILE CREEK

072291103, Union, IA

Built 2021 Load: 32.4 t ADT: 46

FM

Good

Over: TWELVE MILE CREEK

071282705, Union, IA

Built 1977 Load: 32.7 t ADT: 60

LOCAL

Good

Over: STREAM

072281806, Union, IA

Built 1995 Load: 32.7 t ADT: 72

FM POLE RD

Good

Over: MIDDLE PLATTE RIVER

072300806, Union, IA

Built 1993 Load: 32.7 t ADT: 568

LOC W ADAMS ST

Good

Over: STREAM

072311005, Union, IA

Built 2001 Load: 32.7 t ADT: 369

H 17 REA RD

Good

Over: STREAM

073291205, Union, IA

Built 2014 Load: 32.7 t ADT: 170

PHEASANT AVENUE

Good

Over: STREAM

073292202, Union, IA

Built 2022 Load: 32.7 t ADT: 21

H 17 (REA RD)

Good

Over: WEST WOLF CREEK

073281701, Union, IA

Built 2014 Load: 32.7 t ADT: 219

8TH ST RELOC!

Good

Over: DRAINAGE

000000000, Union, IA

Built 1992 Load: 32.7 t ADT: 387

210TH ST

Good

Over: SMALL STREAM

072303101, Union, IA

Built 2012 Load: 32.9 t ADT: 26

LOCAL

Good

Over: SMALL STREAM

071303401, Union, IA

Built 1997 Load: 34.9 t ADT: 15

LOCAL RD

Good

Over: STREAM

071280702, Union, IA

Built 2009 Load: 35.2 t ADT: 62

CHERRY ST

Good

Over: E BR MIDDLE PLATTE RIVER

072303102, Union, IA

Built 2023 Load: 35.2 t ADT: 62

LOCAL RD

Good

Over: STREAM

073311804, Union, IA

Built 2000 Load: 37.2 t ADT: 11

LOCAL

Good

Over: SMALL STREAM

072290306, Union, IA

Built 2010 Load: 37.6 t ADT: 51

FM

Good

Over: GRAND RIVER

073283106, Union, IA

Built 1991 Load: 37.6 t ADT: 29

LOCAL

Good

Over: STREAM

071283605, Union, IA

Built 2005 Load: 38.5 t ADT: 30

FM

Good

Over: 12 MILE CREEK

073302702, Union, IA

Built 1990 Load: 38.7 t ADT: 45

LOCAL

Good

Over: GRAND RIVER

072281803, Union, IA

Built 1995 Load: 38.8 t ADT: 26

P 33 (POLE RD)

Good

Over: EAST PLATTE RIVER

071301702, Union, IA

Built 2012 Load: 38.9 t ADT: 120

190TH ST

Good

Over: SMALL STREAM

072312301, Union, IA

Built 2013 Load: 38.9 t ADT: 339

FM

Good

Over: GRAND RIVER

071280206, Union, IA

Built 2001 Load: 39.9 t ADT: 210

REDWOOD AVE

Good

Over: STREAM

071293602, Union, IA

Built 2011 Load: 39.9 t ADT: 20

H45 240TH ST

Good

Over: SMALL STREAM

071311803, Union, IA

Built 2022 Load: 40.2 t ADT: 40

FM

Good

Over: TWELVE MILE CREEK

073302101, Union, IA

Built 2010 Load: 40.2 t ADT: 477

FM

Good

Over: EAST PLATTE RIVER

071312402, Union, IA

Built 2009 Load: 40.5 t ADT: 927

EAGLE AVE

Good

Over: SMALL STREAM

071311102, Union, IA

Built 2015 Load: 41.6 t ADT: 15

P64 PRIMROSE DR

Good

Over: TWELVE MILE CREEK

071283403, Union, IA

Built 2017 Load: 41.8 t ADT: 71

LOCAL

Good

Over: PLATTE RIVER

071313103, Union, IA

Built 1994 Load: 42.3 t ADT: 21

FM

Good

Over: GRAND RIVER

073291109, Union, IA

Built 2007 Load: 42.5 t ADT: 270

LOCAL

Good

Over: STREAM

072301206, Union, IA

Built 2007 Load: 44.4 t ADT: 11

FM

Good

Over: CREEK

073293401, Union, IA

Built 2004 Load: 44.4 t ADT: 50

LOCAL

Good

Over: MIDDLE PLATTE RIVER

071312803, Union, IA

Built 1994 Load: 48.0 t ADT: 11

LOCAL

Good

Over: STREAM

071302501, Union, IA

Built 2004 Load: 49.6 t ADT: 11

FM

Good

Over: WEST PLATTE RIVER

072312902, Union, IA

Built 1998 Load: 49.6 t ADT: 29

FM

Good

Over: THREE MILE CREEK

073301306, Union, IA

Built 2010 Load: 50.9 t ADT: 350

210TH STREET

Good

Over: FOURMILE CREEK

072283505, Union, IA

Built 1995 Load: 52.6 t ADT: 50

FM

Good

Over: MIDDLE PLATTE RIVER

072311302, Union, IA

Built 2005 Load: 52.9 t ADT: 1,055

197TH ST

Good

Over: STREAM

072282307, Union, IA

Built 2017 Load: 74.8 t ADT: 15

LOC B LEVEL RD

Poor

Over: STREAM

073311401, Union, IA

Built 1940 Load: 11.2 t ADT: 21

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