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)

FM

Fair

Over: LITTLE RIVER

069260201, Decatur, IA

Built 1979 Load: 32.7 t ADT: 428

LOCAL

Fair

Over: MORMON POOL

070242702, Decatur, IA

Built 1995 Load: 32.7 t ADT: 51

FM

Fair

Over: STREAM

070262207, Decatur, IA

Built 1994 Load: 32.7 t ADT: 15

H50 130TH AVE

Fair

Over: SHORT CREEK

070270302, Decatur, IA

Built 1988 Load: 32.7 t ADT: 11

FM

Fair

Over: LITTLE RIVER

068250603, Decatur, IA

Built 2000 Load: 33.0 t ADT: 26

FM

Fair

Over: GRAND RIVER

070272702, Decatur, IA

Built 1959 Load: 33.1 t ADT: 89

FM

Fair

Over: TRIB GRAND RIVER

070273604, Decatur, IA

Built 1967 Load: 34.0 t ADT: 50

FM

Fair

Over: CALEB CREEK

067241404, Decatur, IA

Built 1977 Load: 36.9 t ADT: 379

IA 2

Fair

Over: WEST ELK CREEK

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

Built 1985 Load: 40.5 t ADT: 930

FM

Fair

Over: TRIB GRAND RIVER

068262302, Decatur, IA

Built 1957 Load: 43.5 t ADT: 34

IA 2

Fair

Over: WELDON RIVER

6.0 mi. E of E Jct US 69, Decatur, IA

Built 1984 Load: 45.5 t ADT: 1,330

IA 2

Fair

Over: BRUSH CREEK

3.6 MI. W OF JCT. I-35, Decatur, IA

Built 1985 Load: 48.0 t ADT: 1,350

FM

Fair

Over: WELDON RIVER

068240504, Decatur, IA

Built 1993 Load: 52.9 t ADT: 15

IA 2

Fair

Over: GRAND RIVER

3.0 MI. W 0F JCT. I-35, Decatur, IA

Built 1985 Load: 83.4 t ADT: 1,350

225TH ST

Good

Over: ELK CREEK

068270203, Decatur, IA

Built 2008 Load: 9.8 t ADT: 21

FM

Good

Over: BRUSH CREEK

069251302, Decatur, IA

Built 2006 Load: 13.4 t ADT: 34

275TH ST

Good

Over: STREAM

0682532303, Decatur, IA

Built 2011 Load: 14.0 t ADT: 40

290TH ST

Good

Over: DICKENSON BRANCH

067260305, Decatur, IA

Built 2011 Load: 14.3 t ADT: 5

140TH ST

Good

Over: LITTLE RIVER

070253001, Decatur, IA

Built 2005 Load: 14.4 t ADT: 41

LOCAL

Good

Over: STREAM

069270314, Decatur, IA

Built 2005 Load: 14.5 t ADT: 11

LOCAL

Good

Over: LITTLE RIVER

068251803, Decatur, IA

Built 1999 Load: 16.0 t ADT: 35

LOCAL

Good

Over: STEEL CREEK

068240205, Decatur, IA

Built 1999 Load: 17.4 t ADT: 11

LOCAL

Good

Over: SHORT CREEK

070270204, Decatur, IA

Built 2010 Load: 17.9 t ADT: 26

FM

Good

Over: SHORT CREEK

070271303, Decatur, IA

Built 1994 Load: 17.9 t ADT: 15

LOCAL

Good

Over: STREAM

069271202, Decatur, IA

Built 2003 Load: 18.0 t ADT: 11

LOCAL

Good

Over: WELDON RIVER

068240403, Decatur, IA

Built 1997 Load: 21.0 t ADT: 5

FM

Good

Over: ZADIE CREEK

067272203, Decatur, IA

Built 2003 Load: 22.1 t ADT: 71

IA 2

Good

Over: STREAM

1.0 MI E OF E JCT US 69, Decatur, IA

Built 1927 Load: 22.7 t ADT: 1,720

J 52 280TH ST

Good

Over: DICKENSON BRANCH

067260403, Decatur, IA

Built 2018 Load: 26.7 t ADT: 103

PLEASANTON RD

Good

Over: MCGRUDER CREEK

068250406, Decatur, IA

Built 2015 Load: 32.4 t ADT: 329

R15 125TH AVE

Good

Over: GRAND RIVER

070271604, Decatur, IA

Built 2018 Load: 32.4 t ADT: 219

R15 125TH AVE

Good

Over: SAND CREEK

070272110, Decatur, IA

Built 2019 Load: 32.4 t ADT: 219

LOCAL

Good

Over: DICKERSON BRANCH

067260401, Decatur, IA

Built 2000 Load: 32.7 t ADT: 103

FM

Good

Over: WELDON RIVER

068241701, Decatur, IA

Built 2003 Load: 32.7 t ADT: 10

FM

Good

Over: KILGORE CREEK

068253503, Decatur, IA

Built 1986 Load: 33.3 t ADT: 29

215TH ST

Good

Over: MCGRUDER CREEK

069253303, Decatur, IA

Built 2016 Load: 33.3 t ADT: 110

FM

Good

Over: WELDON RIVER

068241602, Decatur, IA

Built 1994 Load: 35.3 t ADT: 34

SB I-35

Good

Over: STREAM

2.0 mi. N of MO St. Line, Decatur, IA

Built 1970 Load: 37.0 t ADT: 7,100

FM

Good

Over: GRAND RIVER

068261708, Decatur, IA

Built 1984 Load: 38.5 t ADT: 20

FM

Good

Over: BRUSH CREEK

068240501, Decatur, IA

Built 2001 Load: 41.5 t ADT: 45

FM

Good

Over: STREAM

070270904, Decatur, IA

Built 2006 Load: 45.7 t ADT: 219

J 66

Good

Over: STREAM

067251812, Decatur, IA

Built 2013 Load: 46.0 t ADT: 329

FM

Good

Over: JONATHAN CREEK

069240601, Decatur, IA

Built 2003 Load: 50.0 t ADT: 421

R30 150TH AVE

Good

Over: EAST FORK BIG CREEK

068273602, Decatur, IA

Built 2017 Load: 50.9 t ADT: 210

LOCAL

Good

Over: STREAM

070273102, Decatur, IA

Built 1996 Load: 51.0 t ADT: 5

FM

Good

Over: BRUSH CREEK

069243104, Decatur, IA

Built 2004 Load: 52.2 t ADT: 40

LOCAL

Good

Over: BEE CREEK

070260301, Decatur, IA

Built 1993 Load: 52.7 t ADT: 20

POPCORN RD

Good

Over: LITTLE RIVER

070251901, Decatur, IA

Built 2016 Load: 55.2 t ADT: 41

R46 PLEASANTON RD

Good

Over: SMALL STREAM

067251004, Decatur, IA

Built 2017 Load: 70.6 t ADT: 110

FM

Poor

Over: STREAM

067261004, Decatur, IA

Built 1971 ADT: 79

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