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:

SR 32

Over: I-65 NBL

01.06 W SR-39, Boone, IN

Built 2006 ADT: 23,410

CSX RR

Over: SR 32

00.50 E I-65, Boone, IN

Built 1992 ADT: 12,200

SR 39

Over: I-65 NBL

00.90 S SR 32, Boone, IN

Built 2012 ADT: 30,985

SR 47

Over: I-65 NB

01.84 S SR 39, Boone, IN

Built 1970 ADT: 22,997

SR 75

Over: I-74 EB

01.36 N SR 234, Boone, IN

Built 1963 ADT: 8,490

WHITESTOWN PKWY

Over: I-65 NB

06.22 W US 421, Boone, IN

Built 1958 ADT: 39,637

I-65 NB

Over: LAFAYETTE ROAD SBL

00.48 S I-865, Boone, IN

Built 1959 ADT: 2,775

I-65 SB

Over: LAFAYETTE ROAD SBL

00.48 S I-865, Boone, IN

Built 1959 ADT: 2,775

CR 100E/HALL-BAKER

Over: I-65 NBL

01.17 S SR 39, Boone, IN

Built 1958 ADT: 30,975

CSX RR

Over: I-65 NB

00.55 N SR 39, Boone, IN

US 52 WB

Over: I-65 SB

01.89 N SR 32, Boone, IN

Built 1970 ADT: 22,997

206TH ST/ CR 300 N

Over: I-65 SB

00.73 N US 52, Boone, IN

Built 1970 ADT: 22,997

246TH ST/ CR 700 N

Over: I-65 SBL

01.11 N SR 47, Boone, IN

Built 1970 ADT: 20,255

261ST ST/CR 850N

Over: I-65 NB

02.91 N SR 47, Boone, IN

Built 1969 ADT: 21,686

271ST ST/CO LN RD

Over: I-65 NB

04.08 N SR 47, Boone, IN

Built 1970 ADT: 21,686

CR 1100W

Over: I-74 WB

04.02 W SR 75, Boone, IN

Built 1964 ADT: 8,150

CR 500S

Over: I-74 WBL

02.44 W SR 75, Boone, IN

Built 1964 ADT: 7,420

CR 700S

Over: I-74 WBL

00.89 E SR 75, Boone, IN

Built 1963 ADT: 10,519

CR 800S/CO LINE RD

Over: I-74 WB

02.32 E SR 75, Boone, IN

Built 1963 ADT: 9,950

I65 NB to I865 WB

Over: I-865 EB

01.97 W US 421, Boone, IN

Built 1967 ADT: 11,495

I-465 WB TO I-465

Over: I-865 EBL

02.19 W US 421, Boone, IN

Built 1967 ADT: 13,939

I-65 SB TO I-865 E

Over: I65 SB

00.54 E I-65, Boone, IN

Built 1971 ADT: 26,336

KISSEL ROAD

Over: I-865 WB

01.50 E I-65, Boone, IN

Built 1971 ADT: 16,104

COOPER ROAD

Over: I-865 EB

02.25 E I-65, Boone, IN

Built 1971 ADT: 13,744

FORD ROAD

Over: I-865 WB

03.77 E I-65, Boone, IN

Built 1971 ADT: 13,205

SR 267

Over: I-65 NBL

08.59 N I-74, Boone, IN

Built 2010 ADT: 30,000

SR 39

Over: PRAIRIE CREEK

00.51 N SR 32, Boone, IN

Built 1984 Load: 15.9 t ADT: 15,483

CR 550S

Over: N FORK BIG WALNUT CREEK

00.25 E OF CR500 W, Boone, IN

Built 1937 Load: 21.3 t ADT: 670

BLOOR LANE

Over: ZIONSVILLE TRAIL/DITCH

00.10 E FORD ROAD, Boone, IN

Built 1920 Load: 22.4 t ADT: 1,870

PARK STREET

Over: PRAIRIE CREEK

00.02 S OF FORDICE STREET, Boone, IN

Built 1935 Load: 22.7 t ADT: 480

CR 700W

Over: LITTLE SUGAR CREEK

00.25 N OF SR 32, Boone, IN

Built 1920 Load: 23.3 t ADT: 120

CR 450N

Over: DIXON CREEK

00.25 W OF CR 1050 W, Boone, IN

Built 1990 Load: 23.3 t ADT: 120

US 52

Over: PRAIRIE CREEK

02.09 W I-65, Boone, IN

Built 1941 Load: 23.8 t ADT: 9,868

CR 500S

Over: BETT DITCH

00.19 W OF CR 100 E, Boone, IN

Built 1930 Load: 24.0 t ADT: 120

EDLIN ROAD

Over: EDLIN DITCH

00.15 S OF CR 400 S, Boone, IN

Built 1940 Load: 24.0 t ADT: 120

CR 750S

Over: ETTER DITCH

01.10 W OF CR 600 E, Boone, IN

Built 1992 Load: 24.0 t ADT: 620

HUNT CLUB ROAD

Over: FISHBACK CREEK

00.65 W OF CR 850 E, Boone, IN

Built 1970 Load: 24.3 t ADT: 680

CR 500N

Over: SPRING CREEK

00.10 E OF CR150 W, Boone, IN

Built 1992 Load: 24.6 t ADT: 120

US 52

Over: BRUSH CREEK

02.68 W SR 47, Boone, IN

Built 1941 Load: 24.9 t ADT: 9,868

US 52

Over: PRAIRIE CREEK

00.73 W I-65, Boone, IN

Built 1941 Load: 24.9 t ADT: 10,947

CR 550S

Over: EDLIN DITCH

00.50 W OF SR 39, Boone, IN

Built 1980 Load: 25.6 t ADT: 670

CR 450E

Over: FISHBACK CREEK

00.25 N OF CR 400 S, Boone, IN

Built 1995 Load: 25.6 t ADT: 110

WILLOW ROAD

Over: LITTLE EAGLE CREEK

00.50 E OF US 421, Boone, IN

Built 1995 Load: 25.6 t ADT: 1,300

CR 700W

Over: COOK DITCH

00.25 N OF CR 425 S, Boone, IN

Built 1920 Load: 25.9 t ADT: 120

US 52

Over: PRAIRIE CREEK

01.74 E SR 47, Boone, IN

Built 1941 Load: 26.1 t ADT: 9,868

I-865 EB

Over: FISHBACK CREEK

01.33 E I-65, Boone, IN

Built 1971 Load: 26.2 t ADT: 17,056

I-865 WB

Over: FISHBACK CREEK

01.33 E I-65, Boone, IN

Built 1971 Load: 26.2 t ADT: 17,056

I-465 WB

Over: ABANDONED RR

01.51 W US 421, Boone, IN

Built 1967 Load: 26.6 t ADT: 49,259

CR 1000W

Over: LITTLE SUGAR CREEK

01.00 N OF SR 32, Boone, IN

Built 1920 Load: 26.6 t ADT: 120

CR 1175W

Over: WALNUT FORK OF SUGAR CR

00.35 N OF CR 200 S, Boone, IN

Built 1930 Load: 26.6 t ADT: 120

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