Allen County, IN

601 public highway bridges

Allen County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Allen County, Indiana contains 601 public highway bridges. Roughly 30.3% are rated “Good,” 47.9% “Fair,” and 6.8% “Poor.” Poor means the lowest applicable deck, superstructure, substructure, or culvert rating is 4 or below on the 0–9 NBI scale. It is a condition category, not a live safety or closure decision.

Responsible agencies inspect covered bridges on risk-based intervals under current NBIS rules and submit inventory data to FHWA annually. The list below shows every NBI-tracked bridge in the county. Use the “Sort by” controls to change the ordering, and click any row for its reported inspection date, traffic count, and condition fields.

Source: FHWA National Bridge Inventory. See methodology for full definitions.

601
Total Bridges
30.3%
Good
47.9%
Fair
6.8%
Poor Condition

Condition Distribution

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

All Bridges (601)

SR 37

Good

Over: PORTER CREEK

01.52 N SR 101, Allen, IN

Built 2022 Load: 73.2 t ADT: 3,000

GROVE ST

Good

Over: SPY RUN CREEK

00.10 E OF WESTBROOK DR, Allen, IN

Built 1968 Load: 76.8 t ADT: 1,539

EDSALL AVE

Good

Over: NORFOLK SOUTHERN R/R

00.10 S OF MCDONALD ST, Allen, IN

Built 2019 Load: 81.8 t ADT: 2,625

SR 1

Good

Over: WATSON DITCH

09.07 S SR 8, Allen, IN

Built 1941 Load: 90.7 t ADT: 2,700

UNION CHAPEL RD

Good

Over: BELOT DRAIN

00.75 E AUBURN ROAD, Allen, IN

Built 1985 Load: 90.7 t ADT: 5,000

AIRPORT EXPY

Good

Over: WELLBAUM DRAIN

00.06 E COVERDALE RD, Allen, IN

Built 1995 Load: 90.7 t ADT: 10,125

SR 101

Good

Over: SMITH-FRY DITCH

02.23 S SR 37, Allen, IN

Built 1991 Load: 97.2 t ADT: 1,157

I-469

Good

Over: SIX MILE CREEK

01.90 N US 24, Allen, IN

Built 1992 Load: 97.2 t ADT: 33,629

I-469

Good

Over: MARTIN DITCH

01.19 E I-69, Allen, IN

Built 1995 Load: 97.2 t ADT: 44,507

US 24

Good

Over: GROVER DITCH

03.88 W SR 101, Allen, IN

Built 2010 Load: 97.2 t ADT: 17,611

GOEGLEIN RD

Poor

Over: BULLERMAN DRAIN

00.20 S OF TRIER RD, Allen, IN

Built 1969 Load: 3.6 t ADT: 769

E LINCOLN HWY

Poor

Over: FLATROCK CREEK OVERFLOW

00.51 W LORTIE ROAD, Allen, IN

Built 1935 Load: 6.2 t ADT: 156

MAIN ST

Poor

Over: TRIER DRAIN

00.10 W OF STATE ST, Allen, IN

Built 1970 Load: 6.4 t ADT: 974

HAMILTON RD

Poor

Over: REBECCA KNIGHT DRAIN

00.80 W ABOITE ROAD, Allen, IN

Built 1883 Load: 8.2 t ADT: 175

WOODBURN RD

Poor

Over: GROVER DRAIN #2

00.10 W OF ROUSSEY ROAD, Allen, IN

Built 1972 Load: 8.8 t ADT: 4,225

KELL RD

Poor

Over: WILLOW CREEK

00.40 N OF CEDAR CANYONS, Allen, IN

Built 1974 Load: 14.0 t ADT: 150

VAN ZILE RD

Poor

Over: ST JOSEPH RIVER

00.40 N OF HURSHTOWN ROAD, Allen, IN

Built 1883 Load: 16.3 t ADT: 200

SLUSHER RD

Poor

Over: EDGERTON-CARSON DRAIN

00.01 W OF BROBST ROAD, Allen, IN

Built 1935 Load: 18.8 t ADT: 175

REED RD

Poor

Over: PIERSON DRAIN #2

00.10 N OF CARIBE BLVD, Allen, IN

Built 1976 Load: 20.9 t ADT: 308

MONROEVILLE RD

Poor

Over: FLATROCK CREEK

00.10 E OF SR 101, Allen, IN

Built 1975 Load: 21.3 t ADT: 1,148

LIBERTY MILLS RD

Poor

Over: ABOITE CREEK

00.60 W OF HAMILTON RD, Allen, IN

Built 1968 Load: 22.5 t ADT: 536

ELIZABETH ST

Poor

Over: SPY RUN CREEK

00.10 E OF CLINTON ST, Allen, IN

Built 1993 Load: 22.5 t ADT: 7,525

FISHER RD

Poor

Over: JAMES T. JOHNSON DRAIN

00.30 W OF FELGER RD, Allen, IN

Built 1970 Load: 22.9 t ADT: 125

ANTWERP RD

Poor

Over: OBERHALTZER DITCH

00.20 W TRAMMEL ROAD, Allen, IN

Built 1970 Load: 23.0 t ADT: 150

BLUFFTON RD

Poor

Over: HARBER DRAIN

00.02 S WINTERS RD, Allen, IN

Built 1927 Load: 23.5 t ADT: 12,025

TAMARACK DR

Poor

Over: SHOPPMAN DRAIN

00.10 W OF REED RD, Allen, IN

Built 1971 Load: 24.1 t ADT: 462

LAHMEYER RD

Poor

Over: BULLERMAN DRAIN

00.20 N OF STELLHORN RD, Allen, IN

Built 1970 Load: 24.9 t ADT: 8,050

IRON BRIDGE RD

Poor

Over: NATURAL DRAIN

00.30 N OF KRESS RD, Allen, IN

Built 1976 Load: 24.9 t ADT: 102

CLINTON ST

Poor

Over: BECKETT RUN

00.50 N AUBURN RD, Allen, IN

Built 1948 Load: 26.5 t ADT: 20,000

MONROEVILLE RD

Poor

Over: HOFFMAN DRAIN

00.10 W OF FACKLER RD, Allen, IN

Built 1960 Load: 27.0 t ADT: 1,071

WINTERS RD

Poor

Over: HARBER DRAIN

00.10 E BLUFFTON RD, Allen, IN

Built 1976 Load: 27.2 t ADT: 224

MEYER RD

Poor

Over: TRIER DRAIN

00.50 N PAULDING RD, Allen, IN

Built 1969 Load: 28.3 t ADT: 2,525

CUBA RD

Poor

Over: OBERHALTZER DITCH

00.05 N OF GRABILL ROAD, Allen, IN

Built 1937 Load: 28.5 t ADT: 1,150

COLUMBIA ST

Poor

Over: DELTA LAKE

00.10 W OF DELTA BLVD, Allen, IN

Built 1939 Load: 29.4 t ADT: 10,025

AMBER RD

Poor

Over: LITTLE RIVER

00.90 S OF US 24, Allen, IN

Built 1935 Load: 30.1 t ADT: 102

IRON BRIDGE RD

Poor

Over: NATURAL DRAIN

00.55 S OF ERNST ROAD, Allen, IN

Built 1976 Load: 30.9 t ADT: 102

PAULDING RD

Poor

Over: TRIER DRAIN

00.30 W WAYNE TRACE, Allen, IN

Built 1966 Load: 31.4 t ADT: 9,025

FOURTH ST

Poor

Over: SPY RUN CREEK

00.10 W OF SPY RUN AVE, Allen, IN

Built 1921 Load: 32.7 t ADT: 3,025

HOMESTEAD RD

Poor

Over: LITTLE RIVER

00.70 S OF US 24, Allen, IN

Built 1977 Load: 33.8 t ADT: 1,581

TILLMAN RD

Poor

Over: HIGHLAND DRAIN 4

00.20 W OF S HANNA ST, Allen, IN

Built 1966 Load: 34.3 t ADT: 12,125

BARKLEY RD

Poor

Over: BROWN DRAIN

00.20 E OF WHITTERN RD, Allen, IN

Built 1975 Load: 35.3 t ADT: 112

S COUNTY LINE RD

Poor

Over: ST MARYS RIVER

00.75 E WINCHESTER ROAD, Allen, IN

Built 1983 Load: 35.4 t ADT: 156

SMITH RD

Poor

Over: ROBINSON-BRINDLE DRAIN

00.20 S OF INDIANAPOLIS R, Allen, IN

Built 1974 Load: 37.7 t ADT: 128

MILAN CENTER RD

Poor

Over: BOTTERON DRAIN

00.30 N OF DOTY ROAD, Allen, IN

Built 1973 Load: 38.6 t ADT: 179

RUPERT RD

Poor

Over: WERTZ DITCH

00.16 MI N NOTESTINE ROA, Allen, IN

Built 1970 Load: 38.6 t ADT: 200

MULDOON RD

Poor

Over: SNYDER DRAIN

00.30 N FERGUSON ROAD, Allen, IN

Built 1976 Load: 39.6 t ADT: 1,692

FERGUSON RD

Poor

Over: ST MARYS RIVER

00.10 E MULDOON RD, Allen, IN

Built 1972 Load: 44.5 t ADT: 5,750

PARENT RD

Poor

Over: SIX MILE CREEK

00.30 W RIVER RUN ROAD, Allen, IN

Built 1978 Load: 47.4 t ADT: 26

SUMMIT ST

Poor

Over: A. MARTIN DRAIN

00.20 E OF GREEN ST, Allen, IN

Built 1970 Load: 49.1 t ADT: 1,683

LOWER HUNTINGTON R

Poor

Over: ST MARYS RIVER

00.10 W OF FAIRFIELD AVE, Allen, IN

Built 1960 Load: 50.3 t ADT: 15,050

Read our methodology - how this data is sourced, computed, and verified.

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Data sourced from official public datasets. See our methodology for details. Retrieved and formatted by PlainBridges

Every figure on PlainBridge is rendered directly from federal source data, no number is typed in by an editor. This page draws directly on federal source data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.