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)

Sort:

LOCAL

Over: GREELEY CREEK

081381303, Shelby, IA

Built 1993 Load: 21.4 t ADT: 11

LOCAL

Over: SMALL STREAM

078390503, Shelby, IA

Built 1957 Load: 22.0 t ADT: 41

CEDAR RD

Over: DRAINAGE

079403302, Shelby, IA

Built 1954 Load: 22.0 t ADT: 26

2100TH ST

Over: SMALL STREAM

2100th West of M-16, Shelby, IA

Built 2020 Load: 22.4 t ADT: 30

LOCAL

Over: SMALL STREAM

078391203, Shelby, IA

Built 1988 Load: 23.3 t ADT: 11

FM

Over: ELK CREEK

081370701, Shelby, IA

Built 1949 Load: 23.7 t ADT: 29

LOCAL

Over: BUCK CREEK

078370501, Shelby, IA

Built 1950 Load: 24.5 t

IA 44

Over: MOSQUITO CREEK

0.3 mi. E of jct. IA 191, Shelby, IA

Built 1959 Load: 25.1 t ADT: 1,110

LOCAL

Over: KEG CREEK

079390702, Shelby, IA

Built 2000 Load: 25.3 t ADT: 41

FM

Over: WEST NISHNABOTNA RIVER

000000000, Shelby, IA

Built 1969 Load: 25.3 t ADT: 717

LOCAL

Over: E BR KEG CREEK

078401701, Shelby, IA

Built 1957 Load: 25.4 t ADT: 26

FM

Over: WALNUT CREEK

078382303, Shelby, IA

Built 1952 Load: 25.6 t ADT: 60

LOCAL

Over: SMALL STREAM

079390501, Shelby, IA

Built 1990 Load: 25.9 t ADT: 21

SPRUCE LOOP

Over: SMALL STREAM

803137, Shelby, IA

Built 2000 Load: 25.9 t ADT: 21

FM

Over: W NISHNABOTNA RIVER

081370202, Shelby, IA

Built 1957 Load: 26.2 t ADT: 71

LOCAL

Over: CAMP CREEK

078373501, Shelby, IA

Built 1945 Load: 26.3 t ADT: 15

FM

Over: LITTLE SILVER CREEK

078400307, Shelby, IA

Built 1950 Load: 26.9 t ADT: 131

LOCAL

Over: LONG BRANCH CREEK

081372402, Shelby, IA

Built 1998 Load: 26.9 t ADT: 30

FM RD F16

Over: W FORK/W NISHNABOTNA

081380501, Shelby, IA

Built 1970 Load: 27.2 t ADT: 60

FM RD F32

Over: PIGEON CREEK

802940, Shelby, IA

Built 1982 Load: 27.3 t ADT: 518

FM

Over: KEG CREEK

079390802, Shelby, IA

Built 1973 Load: 28.2 t ADT: 450

US 59

Over: DRAINAGE DITCH

2.6 MI. N OF Jct. I-80, Shelby, IA

Built 1970 Load: 28.8 t ADT: 4,850

FM

Over: PIGEON CREEK

801640, Shelby, IA

Built 1959 Load: 28.8 t ADT: 89

FM RD F16

Over: MOSER CREEK

081392004, Shelby, IA

Built 1981 Load: 29.4 t ADT: 159

FM

Over: E BR W NISHNABOTNA RIVER

079370602, Shelby, IA

Built 1972 Load: 30.4 t ADT: 588

US 59

Over: DRAINAGE DITCH

2.8 mi. S of Jct. IA 44, Shelby, IA

Built 1966 Load: 30.8 t ADT: 4,940

FM RD F-32

Over: W FORK W.NISHNABOTNA RIV

080381903, Shelby, IA

Built 1978 Load: 30.8 t ADT: 488

LOCAL

Over: SMALL STREAM

079400801, Shelby, IA

Built 1962 Load: 31.1 t ADT: 15

US 59

Over: LYON CREEK

2.6 mi. S of Jct. IA 37, Shelby, IA

Built 1970 Load: 31.5 t ADT: 3,180

FM

Over: SMALL STREAM

078402402, Shelby, IA

Built 1958 Load: 32.3 t ADT: 29

LOCAL

Over: SMALL STREAM

078392904, Shelby, IA

Built 1950 Load: 32.7 t ADT: 72

FM

Over: SMALL STREAM

078370305, Shelby, IA

Built 1957 Load: 33.0 t ADT: 240

FM RD F32

Over: MOSQUITO CREEK

802640, Shelby, IA

Built 1974 Load: 33.5 t ADT: 816

LOCAL

Over: LONG BRANCH CREEK

080370301, Shelby, IA

Built 1950 Load: 33.6 t ADT: 30

FM

Over: INDIAN CREEK

078370509, Shelby, IA

Built 1965 Load: 33.7 t ADT: 240

FM

Over: WILLOW CREEK

811439, Shelby, IA

Built 1969 Load: 35.1 t ADT: 887

IA 44

Over: WEST NISHNABOTNA RIVER

1.3 MI. E OF Jct. U.S. 59, Shelby, IA

Built 1978 Load: 35.6 t ADT: 3,960

FM

Over: EAST BR W NISHNABOTNA

078380703, Shelby, IA

Built 1965 Load: 36.3 t ADT: 278

IA 44

Over: WEST NISHNABOTNA RIVER

5.8 E OF JCT. U.S. 59, Shelby, IA

Built 1984 Load: 36.8 t ADT: 2,690

US 59

Over: WILLOW CREEK

3.4 mi. N of jct. IA 37, Shelby, IA

Built 1970 Load: 37.6 t ADT: 2,780

FM

Over: ELK CREEK

081373002, Shelby, IA

Built 2005 Load: 37.9 t ADT: 439

FM RD M56

Over: SMALL STREAM

080380302, Shelby, IA

Built 1989 Load: 40.2 t ADT: 34

US 59

Over: WEST NISHNABOTNA RIVER

0.8 MI. S OF SR F-58, Shelby, IA

Built 1970 Load: 40.5 t ADT: 4,850

IA 37

Over: MOSER CREEK

1.4 MI. W Jct. IA #191, Shelby, IA

Built 1961 Load: 42.0 t ADT: 630

IA 191

Over: DRAINAGE DITCH

2.7 MI. N OF JCT. IA 44, Shelby, IA

Built 1986 Load: 42.8 t ADT: 790

FM

Over: SMALL STREAM

079383404, Shelby, IA

Built 1996 Load: 47.0 t ADT: 60

IA 191

Over: MOSQUITO CREEK

2.0 MI. S OF Jct. IA 37, Shelby, IA

Built 1991 Load: 48.1 t ADT: 790

IA 191

Over: MOSQUITO CREEK

2.3 MI. S. OF Jct. IA #37, Shelby, IA

Built 1991 Load: 51.2 t ADT: 790

FM RD F32

Over: SMALL STREAM

080371901, Shelby, IA

Built 2008 Load: 51.2 t ADT: 60

FM

Over: PRAIRIE ROSE CREEK

078372203, Shelby, IA

Built 1984 Load: 52.1 t ADT: 45

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 6, 2026