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)

US 421

Good

Over: FINLEY CREEK

01.14 S SR 32, Boone, IN

Built 1931 Load: 30.1 t ADT: 7,488

CR 200S

Good

Over: BIG EAGLE CREEK

00.80 W OF SR 421, Boone, IN

Built 1990 Load: 30.5 t ADT: 1,030

SR 32

Good

Over: DIERKS (SANITARY) DITCH

00.51 W I-65, Boone, IN

Built 2006 Load: 32.1 t ADT: 13,028

HUNT CLUB ROAD

Good

Over: IRISHMAN RUN

00.55 W OF CR 1000 E, Boone, IN

Built 1995 Load: 32.1 t ADT: 970

CR 900W

Good

Over: WOLF CREEK

00.10 S OF CR 500 N, Boone, IN

Built 1966 Load: 32.4 t ADT: 170

CR 150W

Good

Over: SPRING CREEK

00.05 S OF CR 500 N, Boone, IN

Built 2024 Load: 32.4 t ADT: 400

SR 75

Good

Over: WALNUT FORK OF SUGAR CR.

01.20 S SR 32, Boone, IN

Built 2006 Load: 32.7 t ADT: 1,794

US 421

Good

Over: LONG BR LITTLE EAGLE CR

02.07 N I-465, Boone, IN

Built 2006 Load: 32.7 t ADT: 5,757

SAM RALSTON ROAD

Good

Over: PRAIRIE CREEK

00.50 N OF SR 32, Boone, IN

Built 2006 Load: 32.7 t ADT: 430

CR 300S

Good

Over: BIG RACCOON CREEK

00.30 W OF CR 600 W, Boone, IN

Built 2007 Load: 32.7 t ADT: 350

CR 1050W

Good

Over: BIG RACCOON CREEK

00.40 N OF CR 500 S, Boone, IN

Built 1983 Load: 32.7 t ADT: 110

CR 800S

Good

Over: W FORK BIG WALNUT CREEK

00.75 W OF CR 675 W, Boone, IN

Built 1965 Load: 32.7 t ADT: 340

PERRY-WORTH ROAD

Good

Over: PRAIRIE CREEK

00.01 NE I-65, Boone, IN

Built 1965 Load: 32.7 t ADT: 740

N WEST STREET

Good

Over: PRAIRIE CREEK

00.10 S OF ROYAL ST., Boone, IN

Built 2003 Load: 32.7 t ADT: 310

ROYAL STREET

Good

Over: PRAIRIE CREEK

00.01 W OF SR 39, Boone, IN

Built 2000 Load: 32.7 t ADT: 400

N EAST STREET

Good

Over: PRAIRIE CREEK

00.10 N OF ROYAL ST., Boone, IN

Built 2000 Load: 32.7 t ADT: 1,190

CR 950W

Good

Over: GOLDSBERRY CREEK

00.20 N OF CR 750 N, Boone, IN

Built 2009 Load: 32.7 t ADT: 120

ROCK BRIDGE DRIVE

Good

Over: UNAMED DITCH

00.01 N OF CR 400 S, Boone, IN

Built 2008 Load: 32.7 t ADT: 170

CR 1100E

Good

Over: BIG EAGLE CREEK

00.01 N of CR 500 N, Boone, IN

Built 2012 Load: 32.7 t ADT: 170

CR 500N

Good

Over: BIG EAGLE CREEK

00.10 W of CR 1100 E, Boone, IN

Built 2012 Load: 32.7 t ADT: 110

OAK STREET

Good

Over: IRISHMAN RUN

02.98 W US 421, Boone, IN

Built 2009 Load: 32.7 t ADT: 14,000

CR 750S

Good

Over: ROSS DITCH

00.15 W OF CR 75 W, Boone, IN

Built 2012 Load: 32.7 t ADT: 110

CR 400 S

Good

Over: SMITH DITCH

00.10 E OF CR50 E, Boone, IN

Built 2017 Load: 32.7 t ADT: 260

ALBERT S. WHITE DR

Good

Over: JACKSON RUN

0.20 S CR E 300 S, Boone, IN

Built 2018 Load: 32.7 t ADT: 360

CR 100N

Good

Over: BROWN'S WONDER CREEK

00.25 W OF CR 500 E, Boone, IN

Built 2018 Load: 32.7 t ADT: 600

CR 500W

Good

Over: N FORK BIG WALNUT CREEK

00.20 S OF CR 550 S, Boone, IN

Built 2021 Load: 32.7 t ADT: 554

CR 100N

Good

Over: BIG EAGLE CREEK

00.75 W OF CR 1100 E, Boone, IN

Built 1997 Load: 33.0 t ADT: 120

SR 32

Good

Over: BIG EAGLE CREEK

00.05 E US 421, Boone, IN

Built 1993 Load: 34.0 t ADT: 7,040

FORD ROAD

Good

Over: EAGLE CREEK

00.50 S I-865, Boone, IN

Built 2015 Load: 34.0 t ADT: 7,760

CR 400S

Good

Over: FISHBACK CREEK

00.30 W CR 575 E, Boone, IN

Built 2015 Load: 34.3 t ADT: 6,820

CR 700W

Good

Over: BIG RACCOON CREEK

00.45 N OF CR 425 S, Boone, IN

Built 2023 Load: 34.3 t ADT: 120

SR 75

Good

Over: MUSKRAT CREEK

00.32 N SR 32, Boone, IN

Built 1994 Load: 35.0 t ADT: 2,028

CR 900E

Good

Over: STOKER DITCH

00.01 N OF CR 900 N, Boone, IN

Built 2003 Load: 35.0 t ADT: 260

CR 750N

Good

Over: BROWN'S WONDER CREEK

00.90 E OF CR50 W, Boone, IN

Built 2009 Load: 35.0 t ADT: 170

CR 1200E

Good

Over: KREAGER DITCH

02.80 S OF SR 47, Boone, IN

Built 2000 Load: 35.0 t ADT: 660

US 421

Good

Over: EAGLE CREEK

00.17 S SR 32, Boone, IN

Built 1971 Load: 35.3 t ADT: 5,757

POWELL DRIVE

Good

Over: ETTER DITCH

0.34 S OF WHITESTOWN PKWY, Boone, IN

Built 2022 Load: 35.6 t ADT: 100

Templin Rd

Good

Over: Little Eagle Creek

00.30 W OF US 421, Boone, IN

Built 2022 Load: 35.6 t ADT: 1,300

SR 267

Good

Over: WHITE LICK CREEK

00.90 S I-65, Boone, IN

Built 2000 Load: 36.3 t ADT: 7,409

CR 600W

Good

Over: EDLIN DITCH

00.30 N OF CR 750 S, Boone, IN

Built 1965 Load: 36.6 t ADT: 110

WILLIAMS STREET

Good

Over: PRAIRIE CREEK

00.25 E OF PARK STREET, Boone, IN

Built 1972 Load: 36.6 t ADT: 790

MAIN STREET

Good

Over: PRAIRIE CREEK

00.15 E OF GRANT ST., Boone, IN

Built 2016 Load: 36.6 t ADT: 110

I-65 NB

Good

Over: SUGAR CREEK

02.04 N SR 47, Boone, IN

Built 1969 Load: 37.3 t ADT: 48,511

I-65 SB

Good

Over: SUGAR CREEK

02.04 N SR 47, Boone, IN

Built 1969 Load: 37.3 t ADT: 48,511

CR 550W

Good

Over: BRUSH CREEK

00.60 N CR 850 N, Boone, IN

Built 2015 Load: 37.8 t ADT: 130

CR 550 S

Good

Over: I-65 SB/NB

1.95 S SR 267, Boone, IN

Built 2022 Load: 39.9 t ADT: 716

SR 47

Good

Over: BUNTIN DITCH

1.30 N SR 39, Boone, IN

Built 2020 Load: 40.5 t ADT: 4,390

CR 1200E

Good

Over: BIG EAGLE CREEK

00.67 S OF SR 47, Boone, IN

Built 2000 Load: 41.5 t ADT: 660

I-65 SB

Good

Over: SPRING CREEK

00.61 S SR 47, Boone, IN

Built 1970 Load: 41.8 t ADT: 22,670

I-65 SB

Good

Over: PRAIRIE CREEK

00.20 N US 52, Boone, IN

Built 2023 Load: 43.1 t ADT: 25,855

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