Boone County, IN

235 public highway bridges

Boone County Bridge Snapshot

Boone County, Indiana contains 235 public highway bridges in the FHWA National Bridge Inventory. Roughly 40% are rated “Good,” 44.7% “Fair,” 4.3% “Poor,” and 4.3% 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.

235
Total Bridges
40%
Good
4.3%
Poor
4.3%
Structurally Deficient

Condition Distribution

Good
40% (94)
Fair
44.7% (105)
Poor
4.3% (10)
SD
4.3% (10)

All Bridges (235)

CR 450N

Fair

Over: PRAIRIE CREEK

00.10 W OF CR 275 W, Boone, IN

Built 1900 Load: 35.7 t ADT: 120

SR 47

Fair

Over: PRAIRIE CREEK

00.48 N SR 75, Boone, IN

Built 1981 Load: 36.0 t ADT: 3,976

CR 450N

Fair

Over: DEER CREEK

00.75 W OF CR 500 W, Boone, IN

Built 1990 Load: 36.3 t ADT: 120

SR 39

Fair

Over: SMALL REYNOLDS DITCH

01.22 N SR 32, Boone, IN

Built 1992 Load: 36.6 t ADT: 7,110

SR 75

Fair

Over: WOLF CREEK

01.91 S SR 47, Boone, IN

Built 1936 Load: 36.6 t ADT: 1,587

US 421

Fair

Over: LITTLE EAGLE CREEK

03.59 N I-465, Boone, IN

Built 1971 Load: 37.3 t ADT: 13,297

CR 500W

Fair

Over: PRAIRIE CREEK

00.01 N OF CR 450 N, Boone, IN

Built 1972 Load: 37.6 t ADT: 350

SR 47

Fair

Over: WOLF CREEK

01.68 S SR 75, Boone, IN

Built 1983 Load: 38.9 t ADT: 1,217

PATTERSON STREET

Fair

Over: PRAIRIE CREEK

00.40 N OF SR 32, Boone, IN

Built 1995 Load: 38.9 t ADT: 710

MOUNT ZION ROAD

Fair

Over: SANITARY DITCH

00.01 E of CR200 E, Boone, IN

Built 1997 Load: 39.1 t ADT: 120

E WASHINGTON ST.

Fair

Over: PRAIRIE CREEK

00.10 E OF GRANT ST., Boone, IN

Built 1990 Load: 40.5 t ADT: 570

CR 1050W

Fair

Over: LITTLE SUGAR CREEK

00.85 N OF SR 32, Boone, IN

Built 1960 Load: 40.5 t ADT: 170

CR 300S

Fair

Over: JACKSON RUN

00.30 W OF CR 700 E, Boone, IN

Built 1950 Load: 41.1 t ADT: 1,480

I-65 NB

Fair

Over: PRAIRIE CREEK, TRAIL

00.55 N SR 32, Boone, IN

Built 2014 Load: 41.5 t ADT: 57,066

I-865 EB

Fair

Over: IRISHMAN RUN

03.60 E I-65, Boone, IN

Built 1971 Load: 41.5 t ADT: 17,056

I-865 WB

Fair

Over: IRISHMAN RUN

03.60 E I-65, Boone, IN

Built 1971 Load: 41.5 t ADT: 17,056

I-65 NB

Fair

Over: SPRING CREEK

00.61 S SR 47, Boone, IN

Built 1970 Load: 41.8 t ADT: 21,880

US 52 WB

Fair

Over: SUGAR CREEK

01.96 W SR 47, Boone, IN

Built 1966 Load: 42.5 t ADT: 9,868

CR 200S

Fair

Over: LENNOX DITCH

00.70 W OF CR 900 E, Boone, IN

Built 1900 Load: 42.8 t ADT: 710

CR 550N

Fair

Over: WOLF CREEK

00.70 W OF CR 900 W, Boone, IN

Built 1920 Load: 44.6 t ADT: 120

CR 1050W

Fair

Over: WALNUT FORK OF SUGAR CR

00.80 N OF CR 200 S, Boone, IN

Built 1977 Load: 44.8 t ADT: 120

W BUSBY STREET

Fair

Over: PRAIRIE CREEK

00.02 E OF JAMESON ST., Boone, IN

Built 1910 Load: 46.0 t ADT: 400

CR 1100E

Fair

Over: BIG EAGLE CREEK

00.05 S OF CR 550 S, Boone, IN

Built 1965 Load: 47.6 t ADT: 2,210

SR 32

Fair

Over: ISENHOUR DITCH

01.97 E SR 39, Boone, IN

Built 2000 Load: 50.2 t ADT: 3,770

US 136

Fair

Over: EMILY GARDNER DITCH

02.55 W SR 75, Boone, IN

Built 2008 Load: 53.8 t ADT: 16,753

SR 32

Fair

Over: WOLF CREEK

02.62 E SR 75, Boone, IN

Built 1927 Load: 55.1 t ADT: 7,529

SR 32

Fair

Over: HOSKIN DITCH

04.25 E SR 39, Boone, IN

Built 2001 Load: 57.0 t ADT: 5,098

CR 700E

Fair

Over: BRANCH OF MOUNTS RUN

00.15 S OF SR 32, Boone, IN

Built 1980 Load: 62.9 t ADT: 110

SR 75

Fair

Over: BIG RACCOON CREEK

02.33 N I-74, Boone, IN

Built 1997 Load: 68.7 t ADT: 1,869

KISSEL ROAD

Fair

Over: FISHBACK CREEK

00.15 S OF HUNT CLUB ROAD, Boone, IN

Built 1970 Load: 78.1 t ADT: 750

SR 38

Fair

Over: WILEY DITCH

05.36 W SR 47, Boone, IN

Built 1958 Load: 86.5 t ADT: 401

SR 47

Good

Over: BROWNS WONDER CREEK

02.63 N SR 39, Boone, IN

Built 1965 Load: 19.4 t ADT: 4,837

CR 300S

Good

Over: BIG EAGLE CREEK

00.75 W OF SR 421, Boone, IN

Built 1983 Load: 20.1 t ADT: 4,520

CR 300S

Good

Over: BRANCH OF FISHBACK CREEK

00.25 W OF CR 450 E, Boone, IN

Built 1995 Load: 21.1 t ADT: 1,410

CR 500S

Good

Over: FISHBACK CREEK

00.10 W OF CR 650 E, Boone, IN

Built 1998 Load: 23.3 t ADT: 110

CR 200N

Good

Over: WOLF CREEK

00.40 W OF CR 500 W, Boone, IN

Built 1984 Load: 23.7 t ADT: 120

CR 300E

Good

Over: WHITE LICK CREEK

00.45 N OF CR 550S, Boone, IN

Built 1996 Load: 23.7 t ADT: 120

CR 100S

Good

Over: WALNUT FORK OF SUGAR CR

00.80 W OF CR 950 W, Boone, IN

Built 1977 Load: 24.0 t ADT: 200

CR 550N

Good

Over: DIXON CREEK

00.01 W OF CR 1000 W, Boone, IN

Built 1978 Load: 24.3 t ADT: 120

CR 575E

Good

Over: FISHBACK CREEK

00.40 N OF CR 450 S, Boone, IN

Built 1987 Load: 24.3 t ADT: 110

IRISHMANS RUN LANE

Good

Over: IRISHMANS RUN

00.90 W OF FORD ROAD, Boone, IN

Built 1995 Load: 24.9 t ADT: 140

MAYFIELD LANE

Good

Over: LONG BRANCH CREEK

00.15 S OF SYCAMORE STREE, Boone, IN

Built 1985 Load: 26.2 t ADT: 50

CR 275W

Good

Over: SPRING CREEK

00.25 S OF SR 47, Boone, IN

Built 1992 Load: 27.2 t ADT: 120

CR 400N

Good

Over: WOLF CREEK

00.45 W OF CR 700 W, Boone, IN

Built 1988 Load: 27.5 t ADT: 120

CR 900W

Good

Over: BIG RACCOON CREEK

00.50 N OF CR 500 S, Boone, IN

Built 1999 Load: 28.2 t ADT: 120

ZIONSVILLE ROAD

Good

Over: EAGLE CREEK

00.15 S OF OAK STREET, Boone, IN

Built 1995 Load: 28.5 t ADT: 8,600

CR 400N

Good

Over: DEER CREEK

00.40 W OF CR 500 W, Boone, IN

Built 1992 Load: 28.8 t ADT: 120

US 52 EB

Good

Over: SUGAR CREEK

01.96 W SR 47, Boone, IN

Built 1941 Load: 29.4 t ADT: 2,460

I-65

Good

Over: PRAIRIE CREEK

01.41 N SR 32, Boone, IN

Built 1948 Load: 29.4 t ADT: 57,066

SR 39

Good

Over: GRASSY BRANCH

04.16 N I-74, Boone, IN

Built 1936 Load: 29.5 t ADT: 3,218

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