Decatur County, IA

178 public highway bridges

Decatur County Bridge Snapshot

Decatur County, Iowa contains 178 public highway bridges in the FHWA National Bridge Inventory. Roughly 19.7% are rated “Good,” 32.6% “Fair,” 44.4% “Poor,” and 44.4% 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.

178
Total Bridges
19.7%
Good
44.4%
Poor
44.4%
Structurally Deficient

Condition Distribution

Good
19.7% (35)
Fair
32.6% (58)
Poor
44.4% (79)
SD
44.4% (79)

All Bridges (178)

LOCAL RD

Poor

Over: WOLF CREEK

070261104, Decatur, IA

Built 1978 ADT: 35

LOCAL

Poor

Over: STEEL CREEK

068242303, Decatur, IA

Built 1927 Load: 7.5 t ADT: 11

LOCAL

Poor

Over: WELDON RIVER

070251204, Decatur, IA

Built 1955 Load: 10.1 t ADT: 35

LOCAL

Poor

Over: LONG CREEK

070261605, Decatur, IA

Built 1930 Load: 10.2 t ADT: 21

FM

Poor

Over: SHANE CREEK

067272003, Decatur, IA

Built 1950 Load: 11.3 t ADT: 50

LOCAL

Poor

Over: EAST FORK BIG CREEK

067270103, Decatur, IA

Built 1967 Load: 12.0 t ADT: 113

LOCAL

Poor

Over: KILGORE CREEK

068252607, Decatur, IA

Built 1982 Load: 12.2 t ADT: 21

250TH AVE

Poor

Over: STREAM

67251002, Decatur, IA

Built 1972 Load: 12.7 t ADT: 5

FM

Poor

Over: ELK CREEK

068271202, Decatur, IA

Built 1900 Load: 13.0 t ADT: 40

FM

Poor

Over: SEVEN MILE CREEK

067271302, Decatur, IA

Built 1969 Load: 14.2 t ADT: 190

FM

Poor

Over: WELDON RIVER

067241005, Decatur, IA

Built 1958 Load: 14.5 t ADT: 379

LOCAL

Poor

Over: SEVEN MILE CREEK

067271401, Decatur, IA

Built 1963 Load: 14.5 t ADT: 103

US 69

Poor

Over: ZADIE CREEK

0.9 mi. W. of Jct. I-35, Decatur, IA

Built 1925 Load: 14.5 t ADT: 610

LOCAL

Poor

Over: ZADIE CREEK

067271502, Decatur, IA

Built 1964 Load: 14.6 t ADT: 72

LOCAL

Poor

Over: STREAM

069252506, Decatur, IA

Built 1961 Load: 14.6 t ADT: 41

LOCAL

Poor

Over: STREAM

069270501, Decatur, IA

Built 1961 Load: 14.6 t ADT: 21

FM

Poor

Over: LITTLE RIVER

067251003, Decatur, IA

Built 1957 Load: 14.9 t ADT: 110

LOCAL

Poor

Over: DRAINAGE

068262701, Decatur, IA

Built 1976 Load: 15.1 t ADT: 11

LOCAL

Poor

Over: SHANE CREEK

068272804, Decatur, IA

Built 1967 Load: 15.1 t ADT: 5

FM

Poor

Over: GRAND RIVER

069270106, Decatur, IA

Built 1962 Load: 15.1 t ADT: 45

FM

Poor

Over: WELDON RIVER

069240903, Decatur, IA

Built 1957 Load: 15.9 t ADT: 15

LOCAL

Poor

Over: WELDON RIVER

069241602, Decatur, IA

Built 1966 Load: 16.4 t ADT: 11

FM

Poor

Over: TRIB OF LITTLE RIVER

069253104, Decatur, IA

Built 1969 Load: 16.4 t ADT: 60

LOCAL

Poor

Over: BRUSH CREEK

069272603, Decatur, IA

Built 1920 Load: 16.4 t ADT: 21

FM

Poor

Over: BRUSH CREEK

069252401, Decatur, IA

Built 1980 Load: 16.5 t ADT: 60

LOCAL

Poor

Over: W. FORK BIG CREEK

068273101, Decatur, IA

Built 1970 Load: 16.7 t ADT: 15

FM

Poor

Over: GRAND RIVER

067261305, Decatur, IA

Built 1959 Load: 17.1 t ADT: 329

FM

Poor

Over: POT HOLE CREEK

068271302, Decatur, IA

Built 1957 Load: 17.1 t ADT: 60

LOCAL

Poor

Over: WELDON RIVER

069243303, Decatur, IA

Built 1991 Load: 17.1 t ADT: 5

FM

Poor

Over: WELDON RIVER

070242101, Decatur, IA

Built 1951 Load: 17.1 t ADT: 79

LOCAL

Poor

Over: SEVEN MILE CREEK

067272611, Decatur, IA

Built 1980 Load: 17.2 t ADT: 82

LOCAL

Poor

Over: KILGORE CREEK

068251503, Decatur, IA

Built 1979 Load: 17.2 t ADT: 46

FM

Poor

Over: LONG CREEK

070260903, Decatur, IA

Built 1957 Load: 17.3 t ADT: 26

FM

Poor

Over: JONATHON CREEK

069241805, Decatur, IA

Built 1961 Load: 17.5 t ADT: 40

115TH ST

Poor

Over: WOLF CREEK

070261001, Decatur, IA

Built 1957 Load: 17.6 t ADT: 34

FM

Poor

Over: WELDON RIVER

070240903, Decatur, IA

Built 1973 Load: 18.0 t ADT: 26

LOCAL

Poor

Over: STREAM

067261406, Decatur, IA

Built 1988 Load: 18.2 t ADT: 21

FM

Poor

Over: ELK CREEK

069273506, Decatur, IA

Built 1958 Load: 18.3 t ADT: 240

FM

Poor

Over: STEELE CREEK

067240204, Decatur, IA

Built 1952 Load: 20.4 t ADT: 40

FM

Poor

Over: STREAM

068263605, Decatur, IA

Built 1940 Load: 35.5 t ADT: 60

LOCAL

Poor

Over: LITTLE RIVER

070253101, Decatur, IA

Built 1960 Load: 43.3 t ADT: 21

FM

Poor

Over: SMALL NATURAL STREAM

070273418, Decatur, IA

Built 1939 Load: 73.3 t ADT: 278

LOCAL

Structurally Deficient

Over: LICK BRANCH OF WELDON R

067240501, Decatur, IA

Built 1958 ADT: 26

LOCAL

Structurally Deficient

Over: DICKENSON BRANCH

067261202, Decatur, IA

Built 1949 ADT: 62

LOCAL

Structurally Deficient

Over: LITTLE RIVER

068251904, Decatur, IA

Built 1943 ADT: 72

LOCAL

Structurally Deficient

Over: ELK CREEK

068260703, Decatur, IA

Built 1921 ADT: 15

FM

Structurally Deficient

Over: STREAM

068261603, Decatur, IA

Built 1968 ADT: 20

LOCAL

Structurally Deficient

Over: W FORK BIG CREEK

068271901, Decatur, IA

Built 1929 ADT: 15

FM

Structurally Deficient

Over: JONATHAN CREEK

069250103, Decatur, IA

Built 1920 ADT: 29

LOCAL

Structurally Deficient

Over: CREEK

069263007, Decatur, IA

Built 1958 ADT: 11

Read our methodology — how this data is sourced, computed, and verified.

Related

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Data sourced from official U.S. government datasets. See our methodology for details. Retrieved and formatted by PlainBridges Editorial