Decatur County, IN

141 public highway bridges

Decatur County Bridge Snapshot

Decatur County, Indiana contains 141 public highway bridges in the FHWA National Bridge Inventory. Roughly 36.9% are rated “Good,” 50.4% “Fair,” 5% “Poor,” and 5% 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 IN 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.

141
Total Bridges
36.9%
Good
5%
Poor
5%
Structurally Deficient

Condition Distribution

Good
36.9% (52)
Fair
50.4% (71)
Poor
5% (7)
SD
5% (7)

All Bridges (141)

SR 3

Unknown

Over: I-74 WB

01.53 N US 421, Decatur, IN

Built 1962 ADT: 8,249

CR 700 NORTH

Unknown

Over: I-74 WB

06.68 W US 421, Decatur, IN

Built 1961 ADT: 10,341

CR 420W

Unknown

Over: I-74 WB

03.75 W US 421, Decatur, IN

Built 1961 ADT: 10,341

CR 100W

Unknown

Over: I-74 WB

01.03 W SR 3, Decatur, IN

Built 1961 ADT: 9,256

CR NE 80

Unknown

Over: I-74 WB

02.08 E SR 3, Decatur, IN

Built 1961 ADT: 9,014

BASE ROAD

Unknown

Over: I-74 EB

03.98 E SR 3, Decatur, IN

Built 1961 ADT: 9,256

CR 600E

Unknown

Over: I-74 EB

06.83 E SR 3, Decatur, IN

Built 1961 ADT: 9,256

NEW POINT-ROSSB RD

Unknown

Over: I-74 EB

06.02 W SR 229, Decatur, IN

Built 1962 ADT: 9,256

CR 250 N

Unknown

Over: FRONTAGE ROAD

01.20 W US 421, Decatur, IN

Built 2008 ADT: 20

I-74 WB

Unknown

Over: US 421 SB

01.42 N SR 3, Decatur, IN

Built 2008 ADT: 10,341

I-74 EB

Unknown

Over: US 421 NB

01.42 N SR 3, Decatur, IN

Built 2008 ADT: 10,341

LAYTON DR

Fair

Over: SAND CREEK

00.10 NW OF CR 1100 S, Decatur, IN

Built 1880 Load: 4.5 t ADT: 30

CR 580W

Fair

Over: WYALOOSING CREEK

00.10 S OF CR 950 S, Decatur, IN

Built 1984 Load: 16.3 t ADT: 70

I-74 EB

Fair

Over: FLATROCK RIVER

05.05 W US 421, Decatur, IN

Built 1961 Load: 23.3 t ADT: 11,343

I-74 WB

Fair

Over: FLATROCK RIVER

05.05 W US 421, Decatur, IN

Built 1961 Load: 23.7 t ADT: 11,343

SR 3

Fair

Over: CLIFTY CREEK

04.28 N I-74, Decatur, IN

Built 1983 Load: 25.3 t ADT: 4,809

CR 850E

Fair

Over: TRIBUTARY TO TUB CREEK

00.60 N OF CR 300 S, Decatur, IN

Built 2004 Load: 25.6 t ADT: 360

CR 550N

Fair

Over: RIGHTHAND FORK-SALT CR

00.10 N OF CR 880 E, Decatur, IN

Built 1984 Load: 25.7 t ADT: 280

CR 400S

Fair

Over: VERNON FK MUSCATATUCK R

00.00 W OF CR 500 E, Decatur, IN

Built 1955 Load: 25.8 t ADT: 140

CR 100W

Fair

Over: TRIBUTARY TO COBBS FORK

00.90 S OF CR 500 S, Decatur, IN

Built 1996 Load: 26.3 t ADT: 30

CR 450W

Fair

Over: BUCK RUN

00.20 N OF CR 240 NW, Decatur, IN

Built 2000 Load: 26.7 t ADT: 190

POPLAR ST

Fair

Over: MILLSTONE CREEK

00.00 S OF SOUTH ST, Decatur, IN

Built 1997 Load: 27.0 t ADT: 280

I-74 WBL

Fair

Over: CLIFTY CREEK

02.52 W US 421, Decatur, IN

Built 1962 Load: 27.2 t ADT: 11,344

CR 400S

Fair

Over: SAND CREEK

00.10 W OF SW 60, Decatur, IN

Built 1890 Load: 27.8 t ADT: 180

I-74 WB

Fair

Over: MUDDY FORK SAND CREEK

00.44 E US 421, Decatur, IN

Built 1961 Load: 28.5 t ADT: 8,250

CR 1000S

Fair

Over: PENTHER CREEK

00.70 E OF SW 60, Decatur, IN

Built 1965 Load: 28.8 t ADT: 460

BASE RD

Fair

Over: PENTHER CREEK

00.20 N OF CR 900 S, Decatur, IN

Built 1932 Load: 29.8 t ADT: 180

CR 250S

Fair

Over: BRANCH MUDDY FORK SAND

00.00 W OF CR 220 SW, Decatur, IN

Built 2000 Load: 30.1 t ADT: 140

CR 300S

Fair

Over: VERNON FK MUSCATATUCK R

00.10 W OF CR 550 E, Decatur, IN

Built 1995 Load: 30.9 t ADT: 140

US 421

Fair

Over: COBBS FORK SAND CREEK

04.43 S SR 46, Decatur, IN

Built 1986 Load: 31.1 t ADT: 4,600

CR 640N

Fair

Over: MIDDLE FORK CLIFTY CREEK

00.40 W OF CR 400 E, Decatur, IN

Built 2000 Load: 31.8 t ADT: 230

CR 600S

Fair

Over: FORK OF LAUGHERY CREEK

00.10 E OF CR 700 E, Decatur, IN

Built 1997 Load: 32.0 t ADT: 130

CR 200S

Fair

Over: COBB FORK SAND CREEK

00.20 E OF CR 400 E, Decatur, IN

Built 1940 Load: 32.7 t ADT: 210

CR 300N

Fair

Over: CLIFTY CREEK

00.03 NW OF CR 500 W, Decatur, IN

Built 2012 Load: 32.7 t ADT: 200

CR 100W

Fair

Over: MUDDY FORK OF SAND CREEK

00.40 N OF CR 200 N, Decatur, IN

Built 1899 Load: 32.7 t ADT: 210

CR 300N

Fair

Over: FORK OF SALT CREEK

00.30 E OF CR 850 E, Decatur, IN

Built 1965 Load: 32.7 t ADT: 390

CR 250E

Fair

Over: SQUARE RUN

00.60 N OF CR 820 S, Decatur, IN

Built 1899 Load: 32.7 t ADT: 280

CR 820S

Fair

Over: VERNON FK MUSCATATUCK R

00.90 E OF CR 250 E, Decatur, IN

Built 1895 Load: 32.7 t ADT: 570

CR 480E

Fair

Over: VERNON FK MUSCATATUCK R

00.30 S OF CR 500 S, Decatur, IN

Built 1890 Load: 32.7 t ADT: 140

CR 220SW

Fair

Over: MUDDY FORK OF SAND CREEK

00.20 N OF CR 400 S, Decatur, IN

Built 1890 Load: 32.7 t ADT: 140

CR 400S

Fair

Over: MUDDY FORK OF SAND CREEK

00.00 E OF CR 220 SW, Decatur, IN

Built 1899 Load: 32.7 t ADT: 210

CR 550W

Fair

Over: FALL FORK CLIFTY CREEK

00.00 N OF SR 46, Decatur, IN

Built 1920 Load: 32.7 t ADT: 210

CR 350W

Fair

Over: FALL FORK CLIFTY CREEK

00.30 N OF SR 46, Decatur, IN

Built 1994 Load: 32.7 t ADT: 250

CR 450W

Fair

Over: FALL FORK CLIFTY CREEK

00.00 N OF SR 46, Decatur, IN

Built 1925 Load: 32.7 t ADT: 210

CR 100S

Fair

Over: CLIFTY CREEK

00.00 W OF CR 1050 W, Decatur, IN

Built 1890 Load: 32.7 t ADT: 140

CR 850 W

Fair

Over: BR FALL FORK CLIFTY CREE

00.50 NW OF CR 480 S, Decatur, IN

Built 1925 Load: 32.7 t ADT: 140

CR 480 S

Fair

Over: BR FALL FORK CLIFTY CREE

00.00 W OF CR 700 W, Decatur, IN

Built 1885 Load: 32.7 t ADT: 130

CR 150E

Fair

Over: JORDAN CREEK

00.10 N OF CR 650 S, Decatur, IN

Built 1890 Load: 32.7 t ADT: 110

CR 240NW

Fair

Over: POND BRANCH

00.00 E OF CR 700 W, Decatur, IN

Built 1975 Load: 32.7 t ADT: 320

CR 1250S

Fair

Over: MILLSTONE CREEK

00.20 W OF CR 500 W, Decatur, IN

Built 2011 Load: 32.7 t ADT: 110

Related

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