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)

FM

Poor

Over: BR W PLATTE RIVER

073312502, Union, IA

Built 1957 Load: 11.2 t ADT: 788

LOCAL

Poor

Over: SMALL STREAM

072280806, Union, IA

Built 1940 Load: 12.0 t ADT: 26

LOCAL

Poor

Over: STREAM

071280205, Union, IA

Built 1991 Load: 12.8 t ADT: 35

LOCAL

Poor

Over: SMALL STREAM

071293502, Union, IA

Built 1973 Load: 14.7 t ADT: 15

LOCAL

Poor

Over: STREAM

073280713, Union, IA

Built 1900 Load: 15.0 t ADT: 15

LOCAL

Poor

Over: TWELVE MILE CREEK

071282003, Union, IA

Built 1930 Load: 17.6 t ADT: 35

LOCAL RD

Poor

Over: STREAM

071293002, Union, IA

Built 1973 Load: 17.8 t ADT: 5

LOCAL

Poor

Over: STREAM

072291008, Union, IA

Built 1985 Load: 17.8 t ADT: 180

FM

Poor

Over: OUTLET GREEN VALLEY LK

073312601, Union, IA

Built 1951 Load: 18.0 t ADT: 159

170TH STREET

Poor

Over: GRAND RIVER

072280703, Union, IA

Built 1957 Load: 18.1 t ADT: 46

LOCAL

Poor

Over: STREAM

071303603, Union, IA

Built 2000 Load: 18.5 t ADT: 15

LOCAL

Poor

Over: WOLF CREEK

073282006, Union, IA

Built 1983 Load: 19.3 t ADT: 21

LOCAL SO.CHERRY

Poor

Over: SMALL STREAM

072301802, Union, IA

Built 1968 Load: 20.0 t ADT: 278

LOCAL

Poor

Over: SMALL STREAM

073290105, Union, IA

Built 1900 Load: 20.0 t ADT: 5

LOCAL

Poor

Over: FOUR MILE CREEK

072280103, Union, IA

Built 1967 Load: 20.8 t ADT: 5

LOCAL B LEVEL

Poor

Over: SMALL STREAM

073283103, Union, IA

Built 1973 Load: 21.5 t ADT: 5

LOCAL

Poor

Over: THREE MILE CREEK

073301004, Union, IA

Built 1978 Load: 23.7 t ADT: 35

LOCAL

Poor

Over: SMALL STREAM

073290801, Union, IA

Built 1980 Load: 24.0 t ADT: 11

LOCAL

Poor

Over: EAST PLATTE RIVER

071300301, Union, IA

Built 1981 Load: 26.9 t ADT: 30

LOCAL

Poor

Over: TWELVE MILE CREEK

073300701, Union, IA

Built 1979 Load: 29.5 t ADT: 62

FM

Poor

Over: EAST PLATTE RIVER

071301701, Union, IA

Built 1963 Load: 30.0 t ADT: 199

FM

Poor

Over: SMALL STREAM

071303502, Union, IA

Built 1985 Load: 32.7 t ADT: 71

FM

Poor

Over: STREAM

071311601, Union, IA

Built 1951 Load: 34.6 t ADT: 40

LOC 170TH ST

Poor

Over: SMALL STREAM

072310901, Union, IA

Built 1988 Load: 48.2 t ADT: 113

FM

Poor

Over: CREEK

072282306, Union, IA

Built 1964 Load: 70.9 t ADT: 409

LOCAL

Structurally Deficient

Over: STREAM

071281905, Union, IA

Built 1900 ADT: 11

LOCAL

Structurally Deficient

Over: STREAM

071282106, Union, IA

Built 1992 ADT: 11

LOCAL

Structurally Deficient

Over: INDIAN CREEK

071290502, Union, IA

Built 1900 ADT: 21

LOCAL

Structurally Deficient

Over: MIDDLE PLATTE RIVER

071311603, Union, IA

Built 1970 ADT: 11

LOCAL

Structurally Deficient

Over: STREAM

072291105, Union, IA

Built 1900 ADT: 21

LOCAL

Structurally Deficient

Over: SMALL STREAM

072302704, Union, IA

Built 1900 ADT: 5

LOC DOGWOOD AVE

Structurally Deficient

Over: SMALL STREAM

072311004, Union, IA

Built 1989 ADT: 35

LOCAL

Structurally Deficient

Over: WEST PLATTE RIVER

072312102, Union, IA

Built 1900 ADT: 15

LOCAL

Structurally Deficient

Over: EAST PLATTE RIVER

071300905, Union, IA

Built 1969 Load: 3.1 t ADT: 15

FM

Structurally Deficient

Over: SAND CREEK

071283005, Union, IA

Built 1963 Load: 3.9 t ADT: 50

LOCAL

Structurally Deficient

Over: SMALL STREAM

071292702, Union, IA

Built 1900 Load: 8.8 t ADT: 5

LOCAL

Structurally Deficient

Over: SAND CREEK

071281904, Union, IA

Built 1967 Load: 9.3 t ADT: 41

LOCAL

Structurally Deficient

Over: STREAM

072292504, Union, IA

Built 1988 Load: 9.4 t ADT: 46

LOCAL

Structurally Deficient

Over: SMALL STREAM

073282101, Union, IA

Built 1900 Load: 9.5 t ADT: 30

LOCAL ROAD

Structurally Deficient

Over: STREAM

071302701, Union, IA

Built 1900 Load: 10.0 t ADT: 26

LOCAL

Structurally Deficient

Over: BRANCH EAST PLATTE

071301905, Union, IA

Built 1978 Load: 10.4 t ADT: 11

LOCAL

Structurally Deficient

Over: STREAM

071302401, Union, IA

Built 1977 Load: 10.8 t ADT: 41

FM

Structurally Deficient

Over: MIDDLE PLATTE RIVER

071311601, Union, IA

Built 1952 Load: 11.2 t ADT: 40

LOCAL

Structurally Deficient

Over: STREAM

073280202, Union, IA

Built 1900 Load: 14.1 t ADT: 51

LOCAL

Structurally Deficient

Over: SMALL STREAM

071290606, Union, IA

Built 1990 Load: 16.0 t ADT: 11

LOCAL

Structurally Deficient

Over: PLATTE RIVER

071312602, Union, IA

Built 1989 Load: 16.5 t ADT: 11

LOCAL

Structurally Deficient

Over: SMALL STREAM

073283601, Union, IA

Built 1943 Load: 16.8 t ADT: 30

LOCAL

Structurally Deficient

Over: SMALL STREAM

071290408, Union, IA

Built 1990 Load: 18.9 t ADT: 5

LOCAL

Structurally Deficient

Over: SMALL STREAM

072310401, Union, IA

Built 1900 Load: 20.0 t ADT: 30

LOCAL

Structurally Deficient

Over: SMALL STREAM

073311602, Union, IA

Built 1979 Load: 20.3 t ADT: 15

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