Poweshiek County, IA

221 public highway bridges

Poweshiek County Bridge Snapshot

Poweshiek County, Iowa contains 221 public highway bridges in the FHWA National Bridge Inventory. Roughly 22.6% are rated “Good,” 30.8% “Fair,” 44.3% “Poor,” and 44.3% 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.

221
Total Bridges
22.6%
Good
44.3%
Poor
44.3%
Structurally Deficient

Condition Distribution

Good
22.6% (50)
Fair
30.8% (68)
Poor
44.3% (98)
SD
44.3% (98)

All Bridges (221)

I 80 EB

Unknown

Over: IA 146

AT JCT. IOWA 146, Poweshiek, IA

Built 2020 ADT: 3,350

I 80 WB

Unknown

Over: IOWA 146

west I-80 over Hwy 146, Poweshiek, IA

ADT: 3,350

EB I-80

Unknown

Over: 50TH STREET

2.1 mi. E of Jct. IA 146, Poweshiek, IA

Built 1963 ADT: 20

WB I-80

Unknown

Over: 50TH STREET

2.1 mi. E of Jct IA 146, Poweshiek, IA

Built 1963 ADT: 20

V30 240TH ST

Unknown

Over: I-80

2.0 MI. W OF JCT. SR V38, Poweshiek, IA

Built 1963 ADT: 29,800

LOCAL

Fair

Over: N ENGLISH RIVER

079131804, Poweshiek, IA

Built 1960 Load: 11.3 t ADT: 26

IA 85

Fair

Over: DRAINAGE DITCH

0.7 MILES E OF SR V21, Poweshiek, IA

Built 1957 Load: 13.6 t ADT: 800

US 63

Fair

Over: STREAM

4.4 mi. N of SR G17, Poweshiek, IA

Built 1922 Load: 13.6 t ADT: 1,500

LOCAL

Fair

Over: STREAM

079131701, Poweshiek, IA

Built 1977 Load: 14.2 t ADT: 5

US 6

Fair

Over: STREAM

3.1 MI. E of Jct. IA 146, Poweshiek, IA

Built 1951 Load: 18.1 t ADT: 2,970

IA 21

Fair

Over: WOLF CREEK

1.0 MILES N OF JCT I-80, Poweshiek, IA

Built 1962 Load: 18.1 t ADT: 1,300

FM

Fair

Over: BIG BEAR CREEK

080150502, Poweshiek, IA

Built 1955 Load: 18.7 t ADT: 45

FM

Fair

Over: WALNUT CREEK

081152402, Poweshiek, IA

Built 1991 Load: 18.7 t ADT: 10

FM

Fair

Over: STREAM

078150813, Poweshiek, IA

Built 1969 Load: 19.0 t ADT: 2,000

FM

Fair

Over: SMALL STREAM

079142401, Poweshiek, IA

Built 1940 Load: 19.0 t ADT: 20

FM

Fair

Over: STREAM

078141302, Poweshiek, IA

Built 1995 Load: 20.9 t ADT: 25

LOCAL

Fair

Over: BEAR CREEK

081162604, Poweshiek, IA

Built 1970 Load: 21.2 t ADT: 50

LOCAL

Fair

Over: SUGAR CREEK

078160701, Poweshiek, IA

Built 1984 Load: 22.3 t ADT: 26

LOCAL

Fair

Over: NORTH ENGLISH RIVER

079141302, Poweshiek, IA

Built 1985 Load: 22.3 t ADT: 20

LOCAL

Fair

Over: NORTH ENGLISH RIVER

079142104, Poweshiek, IA

Built 1984 Load: 22.3 t ADT: 40

FM

Fair

Over: BIG BEAR CREEK

080151202, Poweshiek, IA

Built 1983 Load: 22.3 t ADT: 100

FM

Fair

Over: WALNUT CREEK

081130806, Poweshiek, IA

Built 1984 Load: 22.3 t ADT: 45

FM

Fair

Over: WALNUT CREEK

081131004, Poweshiek, IA

Built 1962 Load: 22.3 t ADT: 60

FM

Fair

Over: STREAM

079161501, Poweshiek, IA

Built 1958 Load: 22.7 t ADT: 410

LOCAL

Fair

Over: ROCK CREEK

080131002, Poweshiek, IA

Built 1955 Load: 23.5 t ADT: 5

LOCAL

Fair

Over: BRANCH IOWA RIVER

081140301, Poweshiek, IA

Built 1951 Load: 24.7 t ADT: 50

FM

Fair

Over: NORTH ENGLISH RIVER

079151602, Poweshiek, IA

Built 1957 Load: 25.1 t ADT: 40

LOCAL

Fair

Over: WALNUT CREEK

081141402, Poweshiek, IA

Built 1955 Load: 25.4 t ADT: 30

FM

Fair

Over: SMALL STREAM

078132002, Poweshiek, IA

Built 1971 Load: 25.5 t ADT: 35

FM

Fair

Over: ROCK CREEK

081133202, Poweshiek, IA

Built 1975 Load: 25.7 t ADT: 50

LOCAL

Fair

Over: STREAM

080153103, Poweshiek, IA

Built 1963 Load: 25.9 t ADT: 26

LOCAL

Fair

Over: STREAM

079161801, Poweshiek, IA

Built 1953 Load: 26.2 t ADT: 34

IA 146

Fair

Over: NORTH SKUNK RIVER

2.7 MILES N OF JCT US 63, Poweshiek, IA

Built 1958 Load: 26.3 t ADT: 1,290

LOCAL

Fair

Over: DEEP RIVER

078130206, Poweshiek, IA

Built 1961 Load: 26.4 t ADT: 20

LOCAL

Fair

Over: STREAM

078160202, Poweshiek, IA

Built 2002 Load: 26.4 t ADT: 15

LOCAL

Fair

Over: STREAM

078140102, Poweshiek, IA

Built 1960 Load: 27.2 t ADT: 30

FM

Fair

Over: STREAM

078130504, Poweshiek, IA

Built 1956 Load: 27.5 t ADT: 30

FM

Fair

Over: SMALL STREAM

080151202, Poweshiek, IA

Built 1969 Load: 28.5 t ADT: 100

FM

Fair

Over: STREAM

081152501, Poweshiek, IA

Built 2000 Load: 28.6 t ADT: 45

350TH AVE

Fair

Over: STREAM

081143601, Poweshiek, IA

Built 1953 Load: 28.8 t ADT: 50

LOCAL

Fair

Over: STREAM

079160101, Poweshiek, IA

Built 1968 Load: 29.3 t ADT: 30

LOCAL

Fair

Over: STREAM

081153101, Poweshiek, IA

Built 1958 Load: 29.5 t ADT: 11

LOCAL

Fair

Over: STREAM

079162401, Poweshiek, IA

Built 1957 Load: 29.8 t ADT: 15

LOCAL

Fair

Over: BEAR CREEK

080150202, Poweshiek, IA

Built 1979 Load: 29.9 t ADT: 20

FM

Fair

Over: NORTH ENGLISH RIVER

079150802, Poweshiek, IA

Built 1972 Load: 30.0 t ADT: 90

FM

Fair

Over: N ENGLISH RIVER

079141804, Poweshiek, IA

Built 1979 Load: 30.2 t ADT: 70

LOCAL

Fair

Over: STREAM

079152901, Poweshiek, IA

Built 2003 Load: 30.4 t ADT: 50

IA 21

Fair

Over: NORTH ENGLISH RIVER

3.5 MI. S OF JCT. I-80, Poweshiek, IA

Built 1962 Load: 30.6 t ADT: 1,730

FM

Fair

Over: STREAM

081131603, Poweshiek, IA

Built 1956 Load: 30.8 t ADT: 30

LOCAL

Fair

Over: STREAM

078151601, Poweshiek, IA

Built 1959 Load: 31.6 t ADT: 26

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