Shelby County, IA

194 public highway bridges

Shelby County Bridge Snapshot

Shelby County, Iowa contains 194 public highway bridges in the FHWA National Bridge Inventory. Roughly 36.6% are rated “Good,” 53.6% “Fair,” 9.8% “Poor,” and 9.8% 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.

194
Total Bridges
36.6%
Good
9.8%
Poor
9.8%
Structurally Deficient

Condition Distribution

Good
36.6% (71)
Fair
53.6% (104)
Poor
9.8% (19)
SD
9.8% (19)

All Bridges (194)

FM

Fair

Over: KEG CREEK

078400603, Shelby, IA

Built 1982 Load: 52.9 t ADT: 50

LOCAL

Fair

Over: DUTCH BRANCH

078391303, Shelby, IA

Built 1959 Load: 53.7 t ADT: 34

FM

Fair

Over: PICAYUNE CREEK

80740, Shelby, IA

Built 1988 Load: 60.3 t ADT: 20

US 59

Fair

Over: JENSEN CREEK

1.2 MI. S OF JCT. IA 44, Shelby, IA

Built 1968 Load: 88.6 t ADT: 4,580

1000TH ST

Good

Over: BUCK CREEK

079372203, Shelby, IA

Built 2018 Load: 13.9 t ADT: 51

ORANGE RD

Good

Over: DUTCH BRANCH

078381805, Shelby, IA

Built 2019 Load: 15.9 t ADT: 26

WILDWOOD RD

Good

Over: SMALL STREAM

1/4 mi. South of Hwy 44, Shelby, IA

Built 2012 Load: 16.2 t ADT: 41

2100TH ST

Good

Over: SNAKE CREEK

081383001, Shelby, IA

Built 2018 Load: 16.2 t ADT: 46

HAZEL RD

Good

Over: MOSER CREEK

081392102, Shelby, IA

Built 2013 Load: 18.9 t ADT: 41

REDWOOD ROAD

Good

Over: PRAIRIE ROSE SPILLWAY

078380402, Shelby, IA

Built 2023 Load: 20.1 t ADT: 41

WILDWOOD RD

Good

Over: INDIAN CREEK

079373602, Shelby, IA

Built 2015 Load: 21.1 t ADT: 62

500TH ST

Good

Over: SILVER CREEK

500th West of Hazel, Shelby, IA

Built 2017 Load: 21.7 t ADT: 15

LOCAL

Good

Over: STREAM

081381402, Shelby, IA

Built 1996 Load: 22.7 t ADT: 5

1700TH ST

Good

Over: LYONS CREEK

801439, Shelby, IA

Built 2016 Load: 23.0 t ADT: 35

JUNIPER RD

Good

Over: LYONS CREEK

801139, Shelby, IA

Built 2016 Load: 23.3 t ADT: 11

GINKGO RD

Good

Over: SMALL STREAM

803039, Shelby, IA

Built 2015 Load: 23.3 t ADT: 46

660TH ST

Good

Over: SILVER CREEK

078400103, Shelby, IA

Built 2017 Load: 23.7 t ADT: 30

300TH ST

Good

Over: LITTLE SILVER CREEK

078402701, Shelby, IA

Built 2017 Load: 24.0 t ADT: 72

TIMBER ROAD

Good

Over: WALNUT CREEK

078382602, Shelby, IA

Built 2021 Load: 24.6 t ADT: 21

1250TH ST

Good

Over: TRIB TO MOSQUITO CREEK

079400303, Shelby, IA

Built 2021 Load: 24.6 t ADT: 42

1800TH ST

Good

Over: LYONS CREEK

080391001, Shelby, IA

Built 2022 Load: 24.6 t ADT: 15

LOCAL

Good

Over: SMALL STREAM

081391901, Shelby, IA

Built 1995 Load: 25.3 t ADT: 35

WOODLAND RD

Good

Over: SMALL STREAM

078370802, Shelby, IA

Built 2019 Load: 25.9 t ADT: 35

FM

Good

Over: WEST NISHNABOTNA RIVER

078393203, Shelby, IA

Built 1985 Load: 26.8 t ADT: 100

300TH ST

Good

Over: E BR KEG CREEK

078403001, Shelby, IA

Built 2020 Load: 26.9 t ADT: 29

US 59

Good

Over: DRAINAGE

2.5 MI. N OF JCT. IA 37, Shelby, IA

Built 1970 Load: 27.9 t ADT: 3,020

FM

Good

Over: W. NISNABOTNA RIVER

079380407, Shelby, IA

Built 2003 Load: 28.2 t ADT: 71

FM RD F16

Good

Over: MOSER CREEK

081390901, Shelby, IA

Built 1994 Load: 28.7 t ADT: 60

FM RD F32

Good

Over: SMALL STREAM

802437, Shelby, IA

Built 1982 Load: 29.7 t ADT: 29

FM

Good

Over: TRIBUTARY MOSQUITO CREEK

80839, Shelby, IA

Built 1980 Load: 30.8 t ADT: 368

FM

Good

Over: W NISHNABOTNA RIVER

781039, Shelby, IA

Built 2007 Load: 31.1 t ADT: 409

FM RD M56

Good

Over: EAST BR WEST NISHNABOTNA

080372702, Shelby, IA

Built 1986 Load: 32.3 t ADT: 29

1600TH ST

Good

Over: SMALL STREAM

EAST OF BEECH RD & 1600th, Shelby, IA

Built 2012 Load: 32.7 t ADT: 62

LOCAL

Good

Over: SMALL STREAM

802540, Shelby, IA

Built 2002 Load: 32.7 t ADT: 21

LOCAL

Good

Over: KIDDS CREEK

081382901, Shelby, IA

Built 2003 Load: 32.7 t ADT: 46

FM RD F32

Good

Over: WEST NISHNABOTNA RIVER

080382205, Shelby, IA

Built 1985 Load: 33.5 t ADT: 319

OLD HWY 59

Good

Over: W FORK W NISH RIVER

081392406, Shelby, IA

Built 1994 Load: 34.7 t ADT: 300

LOCAL

Good

Over: W. NISHNABOTNA RIVER

079380807, Shelby, IA

Built 2004 Load: 35.0 t ADT: 113

LOCAL

Good

Over: ELKHORN CREEK

078371201, Shelby, IA

Built 2001 Load: 35.4 t ADT: 82

LOCAL

Good

Over: KEG CREEK

078400501, Shelby, IA

Built 2008 Load: 35.4 t ADT: 26

WILDWOOD RD

Good

Over: SMALL STREAM

1/4 mi. south of 1400th, Shelby, IA

Built 2012 Load: 35.4 t ADT: 21

FM

Good

Over: SILVER CREEK

078403407, Shelby, IA

Built 1980 Load: 35.6 t ADT: 71

LOCAL

Good

Over: W NISHNABOTNA RIVER

081372103, Shelby, IA

Built 1994 Load: 35.6 t ADT: 41

FM

Good

Over: LYONS CREEK

080392403, Shelby, IA

Built 1992 Load: 36.2 t ADT: 450

LOCAL

Good

Over: E BRANCH W. NISHABOTNA

078391303, Shelby, IA

Built 2005 Load: 36.3 t ADT: 34

LOCAL

Good

Over: SILVER CREEK

078403411, Shelby, IA

Built 2001 Load: 37.2 t ADT: 82

FM

Good

Over: W. NISHNABOTNA RIVER

081371003, Shelby, IA

Built 1992 Load: 37.2 t ADT: 15

FM

Good

Over: INDIAN CREEK

078372003, Shelby, IA

Built 1989 Load: 37.7 t ADT: 29

LOCAL

Good

Over: BUCK CREEK

079373501, Shelby, IA

Built 1991 Load: 37.9 t ADT: 30

LOCAL

Good

Over: LITTLE SILVER CREEK

078401505, Shelby, IA

Built 2000 Load: 38.1 t ADT: 30

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