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

Structurally Deficient

Over: WELDON CREEK

070240706, Decatur, IA

Built 1916 ADT: 26

FM

Structurally Deficient

Over: BEE CREEK

070260905, Decatur, IA

Built 1957 ADT: 29

FM

Structurally Deficient

Over: STREAM

070262804, Decatur, IA

Built 1962 ADT: 79

LOCAL

Structurally Deficient

Over: STREAM

070270903, Decatur, IA

Built 1967 ADT: 11

LOCAL

Structurally Deficient

Over: TRIB OF WELDON RIVER

068241702, Decatur, IA

Built 1910 Load: 3.0 t ADT: 5

FM

Structurally Deficient

Over: STREAM

068271302, Decatur, IA

Built 1957 Load: 3.1 t ADT: 60

LOCAL

Structurally Deficient

Over: WELDON RIVER

070243301, Decatur, IA

Built 1962 Load: 3.3 t ADT: 30

LOCAL

Structurally Deficient

Over: TRIB OF DICKENSON BRANCH

067260305, Decatur, IA

Built 1967 Load: 4.0 t ADT: 5

LOCAL

Structurally Deficient

Over: WEST LITTLE RIVER

069261103, Decatur, IA

Built 1930 Load: 4.2 t ADT: 5

FIELD ENTRANCE

Structurally Deficient

Over: SIDE DITCH

070263205, Decatur, IA

Built 1963 Load: 5.4 t ADT: 10

LOCAL

Structurally Deficient

Over: SHORT CREEK

070271308, Decatur, IA

Built 1967 Load: 5.4 t ADT: 30

207TH AVE

Structurally Deficient

Over: STREAM

067262308, Decatur, IA

Built 1977 Load: 6.3 t ADT: 21

LOCAL

Structurally Deficient

Over: SHAIN CREEK

067270401, Decatur, IA

Built 1991 Load: 6.3 t ADT: 35

LOCAL

Structurally Deficient

Over: ELK CREEK

069270604, Decatur, IA

Built 1961 Load: 8.0 t ADT: 15

117TH ST

Structurally Deficient

Over: SAND CREEK

070271706, Decatur, IA

Built 1900 Load: 8.0 t ADT: 11

LOCAL

Structurally Deficient

Over: STREAM

069253008, Decatur, IA

Built 1960 Load: 8.4 t ADT: 190

FM

Structurally Deficient

Over: ELK CREEK

069271704, Decatur, IA

Built 1983 Load: 8.8 t ADT: 26

LOCAL

Structurally Deficient

Over: WOLF CREEK

070260207, Decatur, IA

Built 1964 Load: 9.5 t ADT: 11

LOCAL

Structurally Deficient

Over: LONG CREEK

070262803, Decatur, IA

Built 1915 Load: 9.6 t ADT: 15

LOCAL

Structurally Deficient

Over: STREAM

067250603, Decatur, IA

Built 1966 Load: 10.7 t ADT: 11

FM

Structurally Deficient

Over: WELDON RIVER

069240401, Decatur, IA

Built 1957 Load: 11.1 t ADT: 421

FM

Structurally Deficient

Over: STREAM

069260704, Decatur, IA

Built 1952 Load: 11.6 t ADT: 29

FM

Structurally Deficient

Over: SHORT CREEK

070263206, Decatur, IA

Built 1929 Load: 12.1 t ADT: 15

LOCAL

Structurally Deficient

Over: LITTLE RIVER

068252905, Decatur, IA

Built 1980 Load: 12.2 t ADT: 30

LOCAL

Structurally Deficient

Over: TRIB OF DICKENSON BRANCH

067261005, Decatur, IA

Built 1965 Load: 13.3 t ADT: 46

FM

Structurally Deficient

Over: WEST ELK CREEK

069273003, Decatur, IA

Built 1961 Load: 14.5 t ADT: 20

FM

Structurally Deficient

Over: LITTLE RIVER

067251309, Decatur, IA

Built 1959 Load: 16.3 t ADT: 170

FM

Structurally Deficient

Over: SEVEN MILE CREEK

067272401, Decatur, IA

Built 1957 Load: 18.1 t ADT: 131

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