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)

US 6 & IA 21

Fair

Over: ROCK CREEK

0.7 MI E OF W JCT IA 21, Poweshiek, IA

Built 1956 Load: 32.5 t ADT: 1,610

FM

Fair

Over: STREAM

078152603, Poweshiek, IA

Built 2006 Load: 32.7 t ADT: 10

FM

Fair

Over: SMALL

078151704, Poweshiek, IA

Built 1978 Load: 33.9 t ADT: 45

LOCAL

Fair

Over: SOUTH ENGLISH RIVER

078142001, Poweshiek, IA

Built 1953 Load: 34.6 t ADT: 26

FM

Fair

Over: STREAM

081142101, Poweshiek, IA

Built 1962 Load: 34.8 t ADT: 20

FM

Fair

Over: STREAM

079131707, Poweshiek, IA

Built 1975 Load: 35.1 t ADT: 20

FM

Fair

Over: NORTH ENGLISH RIVER

079132308, Poweshiek, IA

Built 1987 Load: 35.3 t ADT: 20

FM

Fair

Over: NORTH SKUNK RIVER

078162003, Poweshiek, IA

Built 1997 Load: 36.6 t ADT: 40

LOCAL

Fair

Over: SMALL STREAM

081140802, Poweshiek, IA

Built 1986 Load: 37.9 t ADT: 26

LOCAL

Fair

Over: BEAR CREEK

080150402, Poweshiek, IA

Built 1988 Load: 38.1 t ADT: 5

FM

Fair

Over: BUCK CREEK

078153005, Poweshiek, IA

Built 1977 Load: 43.7 t ADT: 60

LOCAL

Fair

Over: STREAM

078161504, Poweshiek, IA

Built 1977 Load: 43.7 t ADT: 80

FM

Fair

Over: DEEP RIVER

079143502, Poweshiek, IA

Built 1997 Load: 45.4 t ADT: 640

FM

Fair

Over: LITTLE BEAR CREEK

080152704, Poweshiek, IA

Built 1977 Load: 46.7 t ADT: 30

IA 146

Fair

Over: UP RR & WEST CREEK

0.1 mi. E of Jct. SR F62, Poweshiek, IA

Built 1986 Load: 46.8 t ADT: 2,210

IA 21

Fair

Over: TRIBUTARY ENGLISH RIVER

3.1 mi. S of IA 85, Poweshiek, IA

Built 1985 Load: 49.9 t ADT: 1,490

FM

Fair

Over: STREAM

078142803, Poweshiek, IA

Built 1987 Load: 52.5 t ADT: 35

LOCAL

Fair

Over: LITTLE BEAR CREEK

080162403, Poweshiek, IA

Built 1982 Load: 52.7 t ADT: 120

FM

Fair

Over: NORTH ENGLISH RIVER

079141402, Poweshiek, IA

Built 1997 Load: 52.9 t ADT: 640

US 63

Fair

Over: BIG BEAR CREEK

1.0 MILES N OF W JCT US 6, Poweshiek, IA

Built 1978 Load: 55.1 t ADT: 1,790

LOCAL

Fair

Over: SMALL STREAM

078160405, Poweshiek, IA

Built 1987 Load: 59.4 t ADT: 15

LOCAL

Fair

Over: SMALL CREEK

080163401, Poweshiek, IA

Built 1985 Load: 60.6 t ADT: 50

IA 21

Fair

Over: STREAM

3.1 MILES N OF JCT IA 85, Poweshiek, IA

Built 1962 Load: 89.1 t ADT: 1,730

20TH ST

Good

Over: IAIS RR

080161702, Poweshiek, IA

Built 2018 Load: 18.2 t ADT: 200

LOCAL

Good

Over: LITTLE BEAR CREEK

080132104, Poweshiek, IA

Built 1985 Load: 22.3 t ADT: 20

EAST 156TH ST N

Good

Over: SMALL STREAM

080161902, Poweshiek, IA

Built 1999 Load: 23.9 t ADT: 131

400TH ST

Good

Over: BRANCH IOWA RIVER

081140103, Poweshiek, IA

Built 2014 Load: 24.5 t ADT: 15

LOCAL

Good

Over: BRANCH IOWA RIVER

081140301, Poweshiek, IA

Built 1951 Load: 25.3 t ADT: 50

180TH ST

Good

Over: STREAM

078143602, Poweshiek, IA

Built 2016 Load: 29.3 t ADT: 10

505TH AVE

Good

Over: EAST BUCK CREEK

078151703, Poweshiek, IA

Built 2022 Load: 29.3 t ADT: 11

LOCAL

Good

Over: DEEP RIVER

079133103, Poweshiek, IA

Built 2010 Load: 29.8 t ADT: 20

IA 21

Good

Over: DEEP RIVER

1.0 MI. N OF JCT. IA 85, Poweshiek, IA

Built 1962 Load: 30.1 t ADT: 1,730

IA 21

Good

Over: BEAR CREEK

1.0 MI. S OF W JCT. US 6, Poweshiek, IA

Built 1962 Load: 30.3 t ADT: 800

I 80 EB

Good

Over: UP RR

0.3 MI. E OF IA 146, Poweshiek, IA

Built 2020 Load: 32.4 t ADT: 13,100

V21 (202ND ST)

Good

Over: DEEP RIVER

078130508, Poweshiek, IA

Built 2013 Load: 32.4 t ADT: 80

512TH AVE

Good

Over: BUCK CREEK

078151903, Poweshiek, IA

Built 2015 Load: 32.4 t ADT: 60

110TH ST

Good

Over: LITTLE BEAR CREEK

080152604, Poweshiek, IA

Built 2021 Load: 32.4 t ADT: 26

LOCAL

Good

Over: BUCK CREEK

078160303, Poweshiek, IA

Built 2006 Load: 32.7 t ADT: 11

FM

Good

Over: STREAM

079130802, Poweshiek, IA

Built 2006 Load: 32.7 t ADT: 40

142ND ST

Good

Over: STREAM

079140804, Poweshiek, IA

Built 2002 Load: 32.7 t ADT: 15

430TH AVE

Good

Over: STREAM

079130701, Poweshiek, IA

Built 2022 Load: 32.7 t ADT: 30

180TH ST

Good

Over: STREAM

079142402, Poweshiek, IA

Built 2019 Load: 32.7 t ADT: 5

LOCAL

Good

Over: SUGAR CREEK

079162001, Poweshiek, IA

Built 2007 Load: 32.7 t ADT: 60

FM

Good

Over: LITTLE BEAR CREEK

080132002, Poweshiek, IA

Built 2008 Load: 32.7 t ADT: 45

FM

Good

Over: CUB CREEK

080132207, Poweshiek, IA

Built 1994 Load: 32.7 t ADT: 750

LOCAL

Good

Over: STREAM

080132304, Poweshiek, IA

Built 2006 Load: 32.7 t ADT: 26

FM

Good

Over: CUB CREEK

080132902, Poweshiek, IA

Built 2006 Load: 32.7 t ADT: 50

70TH ST

Good

Over: STREAM

080153104, Poweshiek, IA

Built 2020 Load: 32.7 t ADT: 26

FM

Good

Over: SMALL

080163502, Poweshiek, IA

Built 1983 Load: 32.7 t ADT: 45

LOCAL

Good

Over: LITTLE BEAR CREEK

080142902, Poweshiek, IA

Built 2004 Load: 32.8 t ADT: 20

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