Allen County, IN

601 public highway bridges

Allen County Bridge Snapshot

Allen County, Indiana contains 601 public highway bridges in the FHWA National Bridge Inventory. Roughly 30.3% are rated “Good,” 47.9% “Fair,” 6.8% “Poor,” and 6.8% 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.

601
Total Bridges
30.3%
Good
6.8%
Poor
6.8%
Structurally Deficient

Condition Distribution

Good
30.3% (182)
Fair
47.9% (288)
Poor
6.8% (41)
SD
6.8% (41)

All Bridges (601)

BOSTICK RD

Fair

Over: ST MARYS RIVER

00.60 W DECATUR ROAD, Allen, IN

Built 2011 Load: 34.4 t ADT: 156

GERARDOT RD

Fair

Over: HOFFMAN DRAIN #2

00.10 N MAPLES ROAD, Allen, IN

Built 1951 Load: 34.6 t ADT: 104

BRUICK RD

Fair

Over: MAUMEE RIVER

00.05 S PARENT ROAD, Allen, IN

Built 1985 Load: 34.7 t ADT: 1,000

SAMPSON RD

Fair

Over: BOHNKE DRAIN

00.00 @ SAMPSON & HOFFMAN, Allen, IN

Built 1972 Load: 34.7 t ADT: 775

S COUNTY LINE RD

Fair

Over: SIMMERMAN DRAIN

00.10 E COMER ROAD, Allen, IN

Built 1973 Load: 34.7 t ADT: 130

CARRIER RD

Fair

Over: FLATROCK CREEK

00.40 E MORGAN, Allen, IN

Built 1974 Load: 34.8 t ADT: 156

MAPLES RD

Fair

Over: BOHNKE DRAIN

00.20 E SAMPSON RD, Allen, IN

Built 1980 Load: 34.9 t ADT: 156

I-69 SB

Fair

Over: SPY RUN CREEK

00.42 S SR 3, Allen, IN

Built 1960 Load: 35.0 t ADT: 35,732

RAY RD

Fair

Over: EEL RIVER

00.20 N CARROLL RD, Allen, IN

Built 1973 Load: 35.0 t ADT: 108

HATHAWAY RD

Fair

Over: GELLER DITCH

00.30 W HAND RD, Allen, IN

Built 1980 Load: 35.2 t ADT: 271

ENGLE RD

Fair

Over: GRAHAM MCCULLOCH #1

00.40 E JEFFERSON BLVD, Allen, IN

Built 1981 Load: 35.3 t ADT: 10,000

GARMAN RD

Fair

Over: CARNAHAN DITCH

00.30 W LOCHNER ROAD, Allen, IN

Built 1973 Load: 35.5 t ADT: 244

RIDER RD

Fair

Over: FLATROCK CREEK

00.10 W MORGAN RD, Allen, IN

Built 1979 Load: 35.6 t ADT: 416

BRUSH COLLEGE RD

Fair

Over: BLACK CREEK

00.10 S DARLING ROAD, Allen, IN

Built 1985 Load: 35.7 t ADT: 156

GRAHAM DR

Fair

Over: SPY RUN CREEK

00.20 W SR 3, Allen, IN

Built 1979 Load: 35.7 t ADT: 111

HOMESTEAD RD

Fair

Over: GRAHAM MCCULLOCH DRAIN

00.30 S US 24, Allen, IN

Built 1978 Load: 35.8 t ADT: 1,613

DARLING RD

Fair

Over: BLACK CREEK

00.10 W BRUSH COLLEGE RD, Allen, IN

Built 1986 Load: 35.9 t ADT: 208

LORTIE RD

Fair

Over: FLATROCK CREEK

00.02 N FLATROCK ROAD, Allen, IN

Built 1989 Load: 35.9 t ADT: 156

MCARDLE RD

Fair

Over: ADAM SCHLEMMER BAKER DRA

00.30 N HOAGLAND RD, Allen, IN

Built 1975 Load: 35.9 t ADT: 156

SAMPSON RD

Fair

Over: BOHNKE DRAIN

00.40 N MAPLES ROAD, Allen, IN

Built 1900 Load: 36.0 t ADT: 104

TILLMAN RD

Fair

Over: MCHENRY DRAIN

00.20 E SNYDER ROAD, Allen, IN

Built 1969 Load: 36.1 t ADT: 1,093

US 27 NB

Fair

Over: BERNING CREEK

04.81 S I-469, Allen, IN

Built 1954 Load: 36.3 t ADT: 5,577

I-469 EB RAMP

Fair

Over: HARBER DITCH

00.13 W SR 1, Allen, IN

Built 1989 Load: 36.3 t ADT: 2,106

GLADESFORD DR

Fair

Over: NATURAL DRAIN

00.40 E IRON BRIDGE RD, Allen, IN

Built 1976 Load: 36.3 t ADT: 10

SNYDER RD

Fair

Over: HOFFMAN DRAIN #2

00.30 S TILLMAN ROAD, Allen, IN

Built 1975 Load: 36.5 t ADT: 208

WERLING RD

Fair

Over: DANNENFELSER DRAIN

00.20 S SR 930, Allen, IN

Built 1965 Load: 36.6 t ADT: 3,000

CLAYTON RD

Fair

Over: BOHNKE DRAIN

00.10 N FLATROCK RD, Allen, IN

Built 1972 Load: 36.7 t ADT: 156

SAMPSON RD

Fair

Over: HOFFMAN DITCH #2

00.25 S US 30, Allen, IN

Built 1892 Load: 36.8 t ADT: 130

PAGE RD

Fair

Over: WHITMER-HAIFLEY #6 DITCH

00.10 N SPRINGFIELD CNTR, Allen, IN

Built 1975 Load: 36.9 t ADT: 1,900

HAMILTON ROAD

Fair

Over: DETTMER DRAIN

00.50 W SR 1, Allen, IN

Built 1970 Load: 37.0 t ADT: 260

SR 930

Fair

Over: TRIER DITCH

02.05 W I-469, Allen, IN

Built 1930 Load: 37.2 t ADT: 12,174

FITCH RD

Fair

Over: LITTLE CEDAR CREEK

00.30 E SIMON RD, Allen, IN

Built 1976 Load: 37.2 t ADT: 108

EMMANUEL RD

Fair

Over: JACOB KOEHLINGER DRAIN

00.01 N THOMPSON ROAD, Allen, IN

Built 1980 Load: 37.4 t ADT: 156

HOFFMAN RD

Fair

Over: FLATROCK CREEK

00.01 E SR 101, Allen, IN

Built 1960 Load: 37.5 t ADT: 130

I-469 EB

Fair

Over: CFE RR

03.81 E US 27, Allen, IN

Built 1989 Load: 37.6 t ADT: 9,884

ABOITE CENTER RD

Fair

Over: ABOITE CREEK

00.10 W HAMILTON RD, Allen, IN

Built 1984 Load: 37.6 t ADT: 1,300

BLUFFTON RD

Fair

Over: HARBER DRAIN

00.20 N FERGUSON RD, Allen, IN

Built 1977 Load: 37.6 t ADT: 14,075

DUPONT ROAD

Fair

Over: BENWARD DITCH

00.59 W. FRITZ ROAD, Allen, IN

Built 1970 Load: 37.6 t ADT: 2,750

EMENHISER RD

Fair

Over: HOUK DRAIN

00.40 N BARKLEY ROAD, Allen, IN

Built 1975 Load: 37.6 t ADT: 104

EDGERTON RD

Fair

Over: LITZENBERG DRAIN

00.01 W STATE LINE, Allen, IN

Built 1982 Load: 37.8 t ADT: 104

MAUMEE CENTER RD

Fair

Over: MARSH DRAIN

00.01 W GUSTIN ROAD, Allen, IN

Built 1983 Load: 37.9 t ADT: 156

YOUNG RD

Fair

Over: TIERNAN DRAIN

00.30 S FLUTTER ROAD, Allen, IN

Built 1974 Load: 38.0 t ADT: 36

ABOITE RD

Fair

Over: PLEASANT RUN DRAIN

00.50 S HAMILTON RD, Allen, IN

Built 1974 Load: 38.0 t ADT: 525

DOYLE RD

Fair

Over: A MARTIN DRAIN

00.40 S SR 14, Allen, IN

Built 1996 Load: 38.0 t ADT: 1,145

BRUICK RD

Fair

Over: BOTTERON DRAIN

00.20 N EHLE ROAD, Allen, IN

Built 1973 Load: 38.3 t ADT: 156

HURSHTOWN RD

Fair

Over: A A JACKSON #2 DITCH

00.30 E KILLIAN ROAD, Allen, IN

Built 1998 Load: 38.6 t ADT: 130

FELGER RD

Fair

Over: SOLON DRAIN

00.40 N ARCOLA RD, Allen, IN

Built 1975 Load: 38.6 t ADT: 1,300

COVINGTON RD

Fair

Over: JUNK DRAIN

00.10 E OF ARDMORE AVE, Allen, IN

Built 1997 Load: 38.6 t ADT: 4,372

FLATROCK RD

Fair

Over: ADAM SCHLEMMER BAKER DRA

00.30 E MCARDLE RD, Allen, IN

Built 1973 Load: 38.8 t ADT: 104

LOWER HUNTINGTON R

Fair

Over: ROBINSON-BRINDLE DRAIN

00.80 E BRANSTRATOR RD, Allen, IN

Built 1935 Load: 39.0 t ADT: 1,587

Related

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