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)

Sort:

CR 675W

Over: W FORK BIG WALNUT CREEK

00.20 N OF CR 800 S, Boone, IN

Built 1988 Load: 26.6 t ADT: 10

I-465 EB

Over: ABANDONED RR

01.51 W US 421, Boone, IN

Built 1967 Load: 27.2 t ADT: 49,259

CR 500W

Over: EDLIN DITCH

00.75 N OF CR 750 S, Boone, IN

Built 1955 Load: 27.5 t ADT: 370

CR 1000W

Over: DIXON CREEK

00.01 N OF CR 550 N, Boone, IN

Built 1920 Load: 28.5 t ADT: 120

I-865 WB

Over: EAGLE CREEK

04.10 E I-65, Boone, IN

Built 1971 Load: 28.8 t ADT: 16,990

CR 350N

Over: WILEY CREEK

00.30 W OF SR 75, Boone, IN

Built 1930 Load: 28.9 t ADT: 140

CR 200S

Over: BRANCH OF WALNUT FORK

00.40 W OF CR 1100 W, Boone, IN

Built 1940 Load: 28.9 t ADT: 110

CR 675W

Over: WOLF CREEK

01.25 N OF CR 200N, Boone, IN

Built 1990 Load: 29.2 t ADT: 120

I-865 EB

Over: EAGLE CREEK

04.10 E I-65, Boone, IN

Built 1971 Load: 29.5 t ADT: 15,240

KISSEL ROAD

Over: FISHBACK CREEK

00.30 N OF HUNT CLUB ROAD, Boone, IN

Built 1960 Load: 29.5 t ADT: 740

SR 47

Over: SPRING CREEK

00.75 S I-65, Boone, IN

Built 1988 Load: 29.8 t ADT: 2,480

CR 25W

Over: SMITH DITCH

00.20 N OF CR 450 S, Boone, IN

Built 1930 Load: 29.8 t ADT: 810

US 52 WB

Over: GOLDSBERRY CREEK

04.23 W SR 47, Boone, IN

Built 1925 Load: 29.9 t ADT: 3,660

CR 500S

Over: BIG RACCOON CREEK

01.00 W OF CR 1050 W, Boone, IN

Built 1960 Load: 30.3 t ADT: 230

SR 32

Over: MOUNTS RUN

02.26 W US 421, Boone, IN

Built 1932 Load: 30.5 t ADT: 5,931

CR 650E

Over: FISHBACK CREEK

00.20 N OF CR 550 S, Boone, IN

Built 1965 Load: 30.5 t ADT: 2,320

CR 750S

Over: WHITE LICK CREEK

00.25 W OF CR 475 E, Boone, IN

Built 1964 Load: 30.5 t ADT: 620

SR 39

Over: MAIN EDLIN DITCH

03.37 S I-65, Boone, IN

Built 1936 Load: 30.8 t ADT: 4,050

CR 100S

Over: BIG EAGLE CREEK

00.30 W OF US 421, Boone, IN

Built 1986 Load: 30.8 t ADT: 110

SR 32

Over: THRELDKELD DITCH

02.59 W SR 75, Boone, IN

Built 1983 Load: 31.1 t ADT: 5,070

CR 950E

Over: MOUNTS RUN

00.80 S OF CR 100 S, Boone, IN

Built 1893 Load: 31.1 t ADT: 110

CR 800E

Over: MOUNTS RUN

00.30 N OF CR 100 S, Boone, IN

Built 1980 Load: 31.4 t ADT: 110

I-74 EB

Over: BIG RACCOON CREEK

03.03 W SR 75, Boone, IN

Built 1964 Load: 31.8 t ADT: 8,868

I-74 WB

Over: BIG RACCOON CREEK

03.03 W SR 75, Boone, IN

Built 1964 Load: 31.8 t ADT: 8,868

CR 1100W

Over: WALNUT FORK

00.50 N OF CR 200 S, Boone, IN

Built 1910 Load: 31.8 t ADT: 120

OAK ROAD

Over: FISHBACK CREEK

01.83 W I-65, Boone, IN

Built 1960 Load: 31.8 t ADT: 14,819

CR 1100E

Over: KREAGER DITCH

00.10 N OF CR 100 N, Boone, IN

Built 1986 Load: 32.4 t ADT: 170

CR 1175W

Over: LITTLE SUGAR CREEK

00.02 N OF CR 200 N, Boone, IN

Built 1960 Load: 32.4 t ADT: 120

CR 200N

Over: LITTLE SUGAR CREEK

01.00 W OF CR 1050 W, Boone, IN

Built 1960 Load: 32.4 t ADT: 120

CR 700E

Over: FISHBACK CREEK

00.24 N OF CR 550 S, Boone, IN

Built 1980 Load: 32.4 t ADT: 510

SR 75

Over: WILEY CREEK

02.30 N SR 32, Boone, IN

Built 1996 Load: 32.7 t ADT: 1,320

I-65

Over: PRAIRIE CREEK

01.75 S SR 39, Boone, IN

Built 1948 Load: 32.7 t ADT: 73,132

CR 350W

Over: PRAIRIE CREEK

00.20 N OF CR 450 N, Boone, IN

Built 1994 Load: 32.7 t ADT: 120

CR 600W

Over: WOLF CREEK

00.80 N OF CR 200 N, Boone, IN

Built 1920 Load: 32.7 t ADT: 120

CR 350N

Over: WOLF CREEK

00.01 W OF CR 700 W, Boone, IN

Built 1981 Load: 32.7 t ADT: 120

CR 700S

Over: WILEY THOMPSON DITCH

00.30 W OF CR 200 E, Boone, IN

Built 1930 Load: 32.7 t ADT: 120

CR 450E

Over: BRANCH OF FISHBACK CREEK

00.70 N OF CR 400 S, Boone, IN

Built 1930 Load: 32.7 t ADT: 110

CR 950W

Over: WALNUT FORK OF SUGAR CR

00.55 N OF CR 100 S, Boone, IN

Built 1960 Load: 32.7 t ADT: 120

CR 900E

Over: MOUNTS RUN

00.01 N OF CR 150 S, Boone, IN

Built 1970 Load: 32.7 t ADT: 1,230

CR 550S

Over: FISHBACK CREEK

00.45 W OF CR 800 E, Boone, IN

Built 1965 Load: 32.7 t ADT: 2,010

PERRY-WORTH ROAD

Over: PRAIRIE CREEK

00.25 S OF CR 100 S, Boone, IN

Built 1965 Load: 32.7 t ADT: 740

INDIANAPOLIS AVE.

Over: PRAIRIE CREEK

00.01 SW I-65, Boone, IN

Built 1965 Load: 32.7 t ADT: 1,390

INDIANAPOLIS AVE.

Over: PRAIRIE CREEK

00.01 SW I-65, Boone, IN

Built 1965 Load: 32.7 t ADT: 1,390

N MERIDIAN STREET

Over: PRAIRIE CREEK

00.10 N OF ROYAL STREET, Boone, IN

Built 2002 Load: 32.7 t ADT: 420

E FORDICE STREET

Over: PRAIRIE CREEK

00.01 W OF PARK STREET, Boone, IN

Built 2008 Load: 32.7 t ADT: 790

CR 300S

Over: JACKSON RUN

00.60 W OF CR 975 E, Boone, IN

Built 1950 Load: 32.7 t ADT: 2,410

I-65 SB

Over: PRAIRIE CREEK, TRAIL

00.55 N SR 32, Boone, IN

Built 2014 Load: 33.0 t ADT: 57,066

CR 500W

Over: WOLF CREEK

00.50 S OF SR 32, Boone, IN

Built 1965 Load: 33.5 t ADT: 400

I-74 EB

Over: WEST FORK BIG WALNUT CR

01.64 E SR 75, Boone, IN

Built 1963 Load: 35.6 t ADT: 10,041

I-74 WB

Over: WEST FORK BIG WALNUT CR

01.64 E SR 75, Boone, IN

Built 1963 Load: 35.6 t ADT: 10,041

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

Reviewed byPlainbridges Editorial, Plain Bridges Editorial Team · June 5, 2026