Porter County, IN

280 public highway bridges

Porter County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Porter County, Indiana contains 280 public highway bridges. Roughly 29.3% are rated “Good,” 38.2% “Fair,” and 5% “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.

280
Total Bridges
29.3%
Good
38.2%
Fair
5%
Poor Condition

Condition Distribution

Good
29.3% (82)
Fair
38.2% (107)
Poor
5% (14)

All Bridges (280)

WEST STREET

Fair

Over: SALT CREEK

00.30 W WASHINGTON ST, Porter, IN

Built 1971 Load: 27.2 t ADT: 2,550

CR 900S

Fair

Over: HEINHOLD DITCH

00.50 E CR 300 E, Porter, IN

Built 1930 Load: 27.5 t ADT: 220

SR 8

Fair

Over: COBB DITCH

02.92 W SR 49, Porter, IN

Built 1952 Load: 27.9 t ADT: 4,768

CR 200S

Fair

Over: KOSELKI DITCH

01.10 E CR 325 E, Porter, IN

Built 1930 Load: 27.9 t ADT: 140

INDIAN BOUNDARY RD

Fair

Over: LITTLE CALUMET RIVER

00.80 E JCT SR 49, Porter, IN

Built 1974 Load: 27.9 t ADT: 4,690

MORGAN AVENUE

Fair

Over: COFFEE CREEK

00.10 E CALUMET ROAD, Porter, IN

Built 1977 Load: 27.9 t ADT: 800

CR 200S

Fair

Over: HUTTON DITCH

00.30 W CR 550 E, Porter, IN

Built 1930 Load: 28.2 t ADT: 140

CR 700S

Fair

Over: KOSELKI DITCH

00.40 W CR 450 E, Porter, IN

Built 1991 Load: 28.2 t ADT: 80

CR 625W

Fair

Over: BREYFOGEL DITCH

01.30 S 1000 S, Porter, IN

Built 1930 Load: 28.2 t ADT: 1,320

US 20

Fair

Over: CSX RR

01.30 W SR 249, Porter, IN

Built 1931 Load: 28.5 t ADT: 9,928

CR 700S

Fair

Over: PHILLIPS DITCH

00.10 W CR 150 W, Porter, IN

Built 1973 Load: 28.5 t ADT: 30

CR 900N

Fair

Over: BRANCH DAMON RUN

00.30 W CR 100W, Porter, IN

Built 1965 Load: 28.5 t ADT: 1,690

SMOKE ROAD

Fair

Over: SANDY HOOK DITCH

00.80 N JCT. SR 8, Porter, IN

Built 1930 Load: 28.8 t ADT: 870

CR 500N

Fair

Over: PEPPER CREEK

00.10 W JCT SR 149, Porter, IN

Built 1996 Load: 29.2 t ADT: 2,370

SR 49

Fair

Over: AHLGRIM DITCH

03.10 N SR 8, Porter, IN

Built 1940 Load: 29.5 t ADT: 8,230

US 6

Fair

Over: COFFEE CREEK

02.10 E SR 49, Porter, IN

Built 1985 Load: 29.8 t ADT: 8,232

CR 900S

Fair

Over: PHILLIPS DITCH

00.20 E CR 200 W, Porter, IN

Built 1930 Load: 29.8 t ADT: 410

CR 900S

Fair

Over: COBBS CREEK

00.70 E JCT SR 2, Porter, IN

Built 1930 Load: 30.1 t ADT: 580

CR 600S

Fair

Over: SANDY HOOK DITCH

00.80 E SMOKE ROAD, Porter, IN

Built 1930 Load: 30.8 t ADT: 300

CR 350W

Fair

Over: LUDINGTON DITCH

00.20 N 400 S, Porter, IN

Built 1962 Load: 30.8 t ADT: 530

MULBERRY AVENUE

Fair

Over: WILLOW CREEK

00.40 E WILLOWDALE ROAD, Porter, IN

Built 1973 Load: 30.9 t ADT: 3,010

CR 600W

Fair

Over: CORNELL DITCH

00.20 N 500 S, Porter, IN

Built 1974 Load: 31.1 t ADT: 280

SR 49

Fair

Over: REEVES DITCH

03.26 S SR 8, Porter, IN

Built 1996 Load: 31.4 t ADT: 4,070

CR 275E

Fair

Over: HEINHOLD DITCH

00.10 N 1050 S, Porter, IN

Built 1985 Load: 31.4 t ADT: 21

HOWE ROAD

Fair

Over: LITTLE CALUMET RIVER

00.50 SE OAK HILL RD, Porter, IN

Built 1975 Load: 31.4 t ADT: 160

SR 49

Fair

Over: AMTRAK

00.33 N I-94, Porter, IN

Built 1970 Load: 31.8 t ADT: 13,774

CR 600S

Fair

Over: COBB DITCH

00.10 W SMOKE ROAD, Porter, IN

Built 1930 Load: 31.8 t ADT: 140

CR 450W

Fair

Over: CORNELL DITCH

00.40 S CR 550 S, Porter, IN

Built 1971 Load: 31.8 t ADT: 70

SR 249 NB

Fair

Over: LITTLE CALUMET RIVER

00.71 N I-94, Porter, IN

Built 1972 Load: 32.1 t ADT: 5,400

CR 500N

Fair

Over: SALT CREEK

00.80 W JCT SR 149, Porter, IN

Built 1981 Load: 32.4 t ADT: 2,480

CR 150E

Fair

Over: AHLGRIM DITCH

00.10 N 500 S, Porter, IN

Built 1996 Load: 32.7 t ADT: 340

CR 50W

Fair

Over: KANKAKEE RIVER

00.50 S CR 1050 S, Porter, IN

Built 1930 Load: 32.7 t ADT: 320

CR 250W

Fair

Over: KANKAKEE RIVER

01.50 S CR 900 S, Porter, IN

Built 1987 Load: 32.7 t ADT: 640

CR 600S

Fair

Over: JONES DITCH

00.10 E SMOKE ROAD, Porter, IN

Built 1930 Load: 32.7 t ADT: 300

CR 450S

Fair

Over: JONES DITCH

00.30 E SMOKE ROAD, Porter, IN

Built 1972 Load: 32.7 t ADT: 400

CR 450S

Fair

Over: COBB DITCH

00.40 W SMOKE ROAD, Porter, IN

Built 1970 Load: 32.7 t ADT: 640

CR 400N

Fair

Over: CROOKED CREEK

00.70 E CR 575E, Porter, IN

Built 1950 Load: 32.7 t ADT: 700

CR 400N

Fair

Over: CROOKED CREEK

00.20 E JCT SR 2, Porter, IN

Built 1972 Load: 32.7 t ADT: 650

CR 700E

Fair

Over: BRANCH OF KEMPER DITCH

00.90 S CR 1275 N, Porter, IN

Built 1950 Load: 32.7 t ADT: 2,050

CR 400W

Fair

Over: CORNELL DITCH

00.30 S CR 600 S, Porter, IN

Built 1930 Load: 32.7 t ADT: 360

CR 350E

Fair

Over: KOSELKI DITCH

01.00 SW JCT US 6, Porter, IN

Built 1940 Load: 32.7 t ADT: 170

JOLIET ROAD

Fair

Over: SALT CREEK

00.40 W JCT SR 130, Porter, IN

Built 1921 Load: 32.7 t ADT: 7,750

CALUMET ROAD

Fair

Over: COFFEE CREEK

00.10 N INDIAN BOUNDARY, Porter, IN

Built 1925 Load: 32.7 t ADT: 1,090

JOLIET ROAD

Fair

Over: CHICAGO FT WAYNE EASTERN

00.10 W SR 130, Porter, IN

Built 1930 Load: 32.7 t ADT: 8,090

CAMPBELL AVENUE

Fair

Over: GRAND TRUNK & WESTERN RR

00.10 S HARRISON BLVD, Porter, IN

Built 1910 Load: 32.7 t ADT: 11,050

CRISMAN ROAD

Fair

Over: CONRAIL RAILROAD

00.40 SW OLD PORTER ROAD, Porter, IN

Built 1987 Load: 32.7 t ADT: 1,910

EVERGREENS STREET

Fair

Over: WILLOW CREEK

00.20 E DOMBEY ROAD, Porter, IN

Built 2014 Load: 32.7 t ADT: 1,970

Po-500E

Fair

Over: KANKAKEE RIVER

0.13 S CR 500E, Porter, IN

Built 1985 Load: 32.7 t ADT: 1

CR 400W/MCCOOL RD.

Fair

Over: UNT SALT CREEK

00.36 S CR 700 N, Porter, IN

Built 1961 Load: 32.7 t ADT: 190

CR 200 E

Fair

Over: COFFEE CREEK

00.04 S. I-90 (TOLL ROAD), Porter, IN

Built 1956 Load: 32.7 t ADT: 2,875

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.