Iowa County, IA

189 public highway bridges

Iowa County Bridge Snapshot

Iowa County, Iowa contains 189 public highway bridges in the FHWA National Bridge Inventory. Roughly 36.5% are rated “Good,” 39.7% “Fair,” 21.2% “Poor,” and 21.2% 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.

189
Total Bridges
36.5%
Good
21.2%
Poor
21.2%
Structurally Deficient

Condition Distribution

Good
36.5% (69)
Fair
39.7% (75)
Poor
21.2% (40)
SD
21.2% (40)

All Bridges (189)

LOCAL

Poor

Over: BRANCH OLD MAN'S CREEK

079110102, Iowa, IA

Built 1925 Load: 15.9 t ADT: 71

FM

Poor

Over: SMALL

080102502, Iowa, IA

Built 1979 Load: 16.3 t ADT: 90

FM

Poor

Over: ENGLISH RIVER

078093102, Iowa, IA

Built 1957 Load: 16.8 t ADT: 50

FM

Poor

Over: OLD MANS CREEK

079093104, Iowa, IA

Built 1949 Load: 17.2 t ADT: 30

FM

Poor

Over: GRITTER CREEK

078123602, Iowa, IA

Built 1970 Load: 18.0 t ADT: 15

LOCAL

Poor

Over: SMALL

080112001, Iowa, IA

Built 1978 Load: 18.1 t ADT: 11

FF AVE

Poor

Over: DRAINAGE DITCH

081120104, Iowa, IA

Built 1971 Load: 18.2 t ADT: 26

LOCAL

Poor

Over: BRANCH OLD MANS CREEK

079093002, Iowa, IA

Built 1930 Load: 19.3 t ADT: 50

LOCAL

Poor

Over: PRICE CREEK

081090802, Iowa, IA

Built 1940 Load: 19.9 t ADT: 100

POWESHIEK IOWA RD

Poor

Over: HONEY CREEK

081123102, Iowa, IA

Built 1969 Load: 20.9 t ADT: 20

LOCAL

Poor

Over: STREAM

079110202, Iowa, IA

Built 1976 Load: 21.0 t ADT: 20

FM

Poor

Over: SMALL STREAM

079112702, Iowa, IA

Built 1930 Load: 21.0 t ADT: 60

LOCAL

Poor

Over: LITTLE BEAR CREEK

080111704, Iowa, IA

Built 1978 Load: 24.5 t ADT: 40

LOCAL

Poor

Over: CONVEY CREEK

079092602, Iowa, IA

Built 1920 Load: 24.9 t ADT: 100

LOCAL

Poor

Over: DEER CREEK

078090902, Iowa, IA

Built 1976 Load: 25.1 t ADT: 71

M AVE

Poor

Over: IOWA RIVER

081101902, Iowa, IA

Built 1950 Load: 26.1 t ADT: 2,340

FM

Poor

Over: LITTLE BEAR CREEK

080110903, Iowa, IA

Built 1975 Load: 28.8 t ADT: 25

LOCAL

Poor

Over: MILLER CREEK

078092302, Iowa, IA

Built 1900 Load: 30.7 t ADT: 110

LOCAL

Poor

Over: STREAM

080100502, Iowa, IA

Built 1976 Load: 30.8 t ADT: 20

LOCAL

Poor

Over: BRANCH BRADLEY CREEK

079091303, Iowa, IA

Built 1965 Load: 47.0 t ADT: 26

LOCAL

Structurally Deficient

Over: BIRCH CREEK

078092502, Iowa, IA

Built 1963 ADT: 11

LOCAL

Structurally Deficient

Over: DRAINAGE DITCH

079110504, Iowa, IA

Built 1955 ADT: 20

FM LEGNO

Structurally Deficient

Over: DEVIL'S RUN

079122401, Iowa, IA

Built 1900

FM

Structurally Deficient

Over: STREAM

081123301, Iowa, IA

Built 1980 Load: 2.7 t ADT: 25

LOCAL

Structurally Deficient

Over: OLD MAN'S CREEK

080113602, Iowa, IA

Built 1975 Load: 4.5 t ADT: 34

FM

Structurally Deficient

Over: LITTLE BEAR CREEK

080122702, Iowa, IA

Built 1970 Load: 5.9 t ADT: 80

LOCAL

Structurally Deficient

Over: NORTH ENGLISH RIVER

079113204, Iowa, IA

Built 1929 Load: 6.1 t ADT: 20

FM

Structurally Deficient

Over: SMALL

079123003, Iowa, IA

Built 1952 Load: 6.1 t ADT: 45

LOCAL

Structurally Deficient

Over: BR MIDDLE FORK ENGLISH R

078121306, Iowa, IA

Built 1925 Load: 8.2 t ADT: 11

LOCAL

Structurally Deficient

Over: MILLER CREEK

078092402, Iowa, IA

Built 1930 Load: 9.3 t ADT: 30

LOCAL

Structurally Deficient

Over: BR OF OLD MANS CREEK

079101005, Iowa, IA

Built 1976 Load: 9.9 t ADT: 150

LOCAL

Structurally Deficient

Over: SMALL STREAM

080120203, Iowa, IA

Built 1969 Load: 9.9 t ADT: 5

LOCAL

Structurally Deficient

Over: OLD MANS CREEK

079102703, Iowa, IA

Built 1967 Load: 10.1 t ADT: 26

FM

Structurally Deficient

Over: SMALL STREAM

081110805, Iowa, IA

Built 1959 Load: 11.5 t ADT: 60

LOCAL

Structurally Deficient

Over: SMALL STREAM

080112002, Iowa, IA

Built 1982 Load: 11.9 t ADT: 80

LOCAL

Structurally Deficient

Over: BRANCH DEVIL'S RUN

079112802, Iowa, IA

Built 1963 Load: 12.2 t ADT: 26

LOCAL

Structurally Deficient

Over: SMALL STREAM

080120501, Iowa, IA

Built 1977 Load: 13.8 t ADT: 30

FM

Structurally Deficient

Over: ENGLISH RIVER

078110205, Iowa, IA

Built 1958 Load: 14.9 t ADT: 690

FM

Structurally Deficient

Over: IOWA RIVER

081121104, Iowa, IA

Built 1952 Load: 20.1 t ADT: 110

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