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)

Sort:

EB I-80

Over: V 52 (H AVE)

JUNCTION I-80 & SR V52, Iowa, IA

Built 1963 ADT: 265

WB I-80

Over: IOWA 149

AT JCT OF I-80 & IA 149, Iowa, IA

Built 1963 ADT: 3,550

FM W-16

Over: I-80

2.1 MI. E OF JCT. IA 149, Iowa, IA

Built 1963 ADT: 33,000

US 151

Over: I-80

JCT. US 151 & I-80, Iowa, IA

Built 1963 ADT: 33,000

FM

Over: I-80

2.5 miles West of SR W38, Iowa, IA

Built 1963 ADT: 34,000

SS AVE

Over: BRANCH ENGLISH RIVER

078093104, Iowa, IA

Built 2010 Load: 6.4 t ADT: 11

LOCAL

Over: HILTON CREEK

080100804, Iowa, IA

Built 1986 Load: 12.7 t ADT: 34

FM

Over: SMALL

081090801, Iowa, IA

Built 1949 Load: 13.2 t ADT: 130

FM

Over: SMALL

081090901, Iowa, IA

Built 1945 Load: 14.1 t ADT: 180

LOCAL

Over: DEEP RIVER

078120602, Iowa, IA

Built 1962 Load: 14.8 t ADT: 11

LOCAL(LWC)

Over: MIDDLE FORK ENGLISH RVR

078122402, Iowa, IA

Built 1992 Load: 15.3 t ADT: 15

LOCAL

Over: SMALL STREAM

081122802, Iowa, IA

Built 1952 Load: 15.7 t ADT: 30

FM

Over: PRICE CREEK

081100203, Iowa, IA

Built 1956 Load: 16.0 t ADT: 60

LOCAL

Over: OLD MAN'S CREEK

079093404, Iowa, IA

Built 1954 Load: 17.3 t ADT: 80

FM

Over: HONEY CREEK

081122306, Iowa, IA

Built 1960 Load: 17.5 t ADT: 45

I 80

Over: STREAM

0.7 MI. E OF Jct. US 151, Iowa, IA

Built 1963 Load: 17.9 t ADT: 32,400

FM

Over: NORTH FORK ENGLISH RIVER

078102001, Iowa, IA

Built 1960 Load: 18.0 t ADT: 70

W 21 (U AVE)

Over: STREAM

AT JCT. I-80, Iowa, IA

Built 1963 Load: 18.1 t ADT: 10

LOCAL

Over: STREAM

081090302, Iowa, IA

Built 1980 Load: 18.4 t ADT: 11

FM

Over: ENGLISH RIVER

079122907, Iowa, IA

Built 1952 Load: 18.9 t ADT: 70

FM

Over: DRAINAGE WAY

078120601, Iowa, IA

Built 1945 Load: 19.7 t ADT: 10

LOCAL

Over: OLD MANS CREEK

079103602, Iowa, IA

Built 1978 Load: 20.0 t ADT: 34

LOCAL

Over: DEER CREEK

078091204, Iowa, IA

Built 1942 Load: 20.3 t ADT: 40

LOCAL

Over: SMALL STREAM

080091802, Iowa, IA

Built 1974 Load: 22.7 t ADT: 40

LOCAL

Over: TEENER CREEK

078093206, Iowa, IA

Built 1975 Load: 24.5 t ADT: 30

LOCAL

Over: STREAM

079091004, Iowa, IA

Built 1977 Load: 24.5 t ADT: 30

LOCAL

Over: CONVEY CREEK

079091503, Iowa, IA

Built 1977 Load: 24.5 t ADT: 15

LOCAL

Over: SMALL STREAM

079093103, Iowa, IA

Built 1974 Load: 24.5 t ADT: 20

FM

Over: STREAM

079110502, Iowa, IA

Built 1981 Load: 24.5 t ADT: 570

FM

Over: STREAM

079113002, Iowa, IA

Built 1972 Load: 24.5 t ADT: 80

FM

Over: SMALL

080092101, Iowa, IA

Built 1963 Load: 24.5 t ADT: 80

M AVE

Over: STREAM

080100602, Iowa, IA

Built 1953 Load: 24.5 t ADT: 1,790

FM

Over: SMALL

081092412, Iowa, IA

Built 1959 Load: 24.5 t ADT: 210

FM

Over: SMALL

081102103, Iowa, IA

Built 1966 Load: 24.5 t ADT: 1,150

FM

Over: SMALL

081102303, Iowa, IA

Built 1966 Load: 24.5 t ADT: 1,150

FM

Over: SMALL STREAM

081110206, Iowa, IA

Built 1983 Load: 24.5 t ADT: 1,230

FM

Over: HONEY CREEK

081122806, Iowa, IA

Built 1981 Load: 24.5 t ADT: 40

IA 149

Over: ENGLISH CREEK

0.4 MI. S OF SR F67, Iowa, IA

Built 1987 Load: 26.6 t ADT: 2,010

LOCAL

Over: STREAM

079101702, Iowa, IA

Built 1976 Load: 27.1 t ADT: 80

IA 220

Over: IOWA RIVER

1.0 MILES NORTH JCT. US 6, Iowa, IA

Built 1978 Load: 27.4 t ADT: 1,050

FM

Over: GRITTER CREEK

078112608, Iowa, IA

Built 1969 Load: 27.5 t ADT: 470

LOCAL

Over: GRITTER CREEK

078113102, Iowa, IA

Built 1980 Load: 29.1 t ADT: 15

LOCAL

Over: HILTON CREEK

080100505, Iowa, IA

Built 1984 Load: 29.8 t ADT: 60

FM

Over: OLD MANS CREEK

079092701, Iowa, IA

Built 1976 Load: 30.0 t ADT: 20

FM

Over: DRAINAGE

081120203, Iowa, IA

Built 1976 Load: 30.0 t ADT: 30

LOCAL

Over: GRITTER CREEK

078123502, Iowa, IA

Built 1977 Load: 30.2 t ADT: 26

FM

Over: MIDDLE FK ENGLISH RIVER

078112004, Iowa, IA

Built 1970 Load: 30.4 t ADT: 450

LOCAL

Over: MIDDLE ENGLISH R

078122302, Iowa, IA

Built 1976 Load: 30.8 t ADT: 50

FM

Over: DRAINAGE DEER CREEK

078091002, Iowa, IA

Built 1976 Load: 32.7 t ADT: 120

FM

Over: MIDDLE ENGLISH RIVER

078112202, Iowa, IA

Built 1975 Load: 32.7 t ADT: 130

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

Reviewed byPlainbridges Editorial, Plain Bridges Editorial Team · June 5, 2026