Porter County, IN

280 public highway bridges

Porter County Bridge Snapshot

Porter County, Indiana contains 280 public highway bridges in the FHWA National Bridge Inventory. Roughly 29.3% are rated “Good,” 38.2% “Fair,” 5% “Poor,” and 5% 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.

280
Total Bridges
29.3%
Good
5%
Poor
5%
Structurally Deficient

Condition Distribution

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

All Bridges (280)

CR 400S

Good

Over: AHLGRIM DITCH

00.30 E SR 49, Porter, IN

Built 2014 Load: 30.5 t ADT: 400

CR 900S

Good

Over: CORNELL DITCH

00.30 W 200 W, Porter, IN

Built 2014 Load: 30.5 t ADT: 410

US 6

Good

Over: CSX RR

01.92 E SR 49, Porter, IN

Built 1929 Load: 30.8 t ADT: 8,232

SR 8

Good

Over: GRASSMERE DITCH

02.03 W US 421, Porter, IN

Built 1994 Load: 30.8 t ADT: 2,889

US 20

Good

Over: BURNS DITCH/DEEP RIVER

01.05 E SR 51, Porter, IN

Built 1998 Load: 31.4 t ADT: 10,274

CLEM ROAD

Good

Over: WILLOW CREEK

00.50 E DOMBEY RD, Porter, IN

Built 1973 Load: 31.8 t ADT: 740

CR 50E

Good

Over: HEINHOLD DITCH

00.50 S 1050 S, Porter, IN

Built 1997 Load: 32.4 t ADT: 1

SR 2

Good

Over: SALT CREEK

00.78 W US 30, Porter, IN

Built 1993 Load: 32.7 t ADT: 9,324

SR 49, RAMPS

Good

Over: UNT W BR CROOKED CR

01.94 N SR 2, Porter, IN

Built 1987 Load: 32.7 t ADT: 27,740

US 30

Good

Over: GREIGER DITCH

2.56 W US 421, Porter, IN

Built 2014 Load: 32.7 t ADT: 17,516

CR 400S

Good

Over: CROOKED CREEK

00.90 E CR 450 E, Porter, IN

Built 1930 Load: 32.7 t ADT: 270

CR 500E

Good

Over: KANKAKEE RIVER

00.60 S CR 1400 S, Porter, IN

Built 1966 Load: 32.7 t ADT: 380

CR 875N

Good

Over: SQUIRREL CREEK

00.20 E CR 400 W, Porter, IN

Built 2001 Load: 32.7 t ADT: 1,170

WAGNER ROAD

Good

Over: LITTLE CALUMET RIVER

00.40 S US 20, Porter, IN

Built 1968 Load: 32.7 t ADT: 1,680

SHOREWOOD DRIVE

Good

Over: LAKE LOUISE

00.60 S JCT US 30, Porter, IN

Built 1974 Load: 32.7 t ADT: 2,160

CR 475W

Good

Over: CONRAIL, NY/ST LOUIS RR

00.10 S JCT SR 130, Porter, IN

Built 2000 Load: 32.7 t ADT: 8,260

CR 600N

Good

Over: CSX RAILROAD

00.10 W CR 500 E, Porter, IN

Built 1996 Load: 32.7 t ADT: 1,480

CRISMAN ROAD

Good

Over: CSX RAILROAD

00.10 NE PORTAGE AVENUE, Porter, IN

Built 1987 Load: 32.7 t ADT: 1,910

OLD FAITHFUL DRIVE

Good

Over: CORNELL DITCH

00.20 W CR 600W, Porter, IN

Built 2001 Load: 32.7 t ADT: 300

MEADOWBROOK DRIVE

Good

Over: GARDEN TERRACE DITCH

00.20 N 400 NORTH, Porter, IN

Built 2001 Load: 32.7 t ADT: 390

RAIL ROAD

Good

Over: COFFEE CREEK

00.30 E JCT SR 49, Porter, IN

Built 2001 Load: 32.7 t ADT: 1,520

LUTE ROAD

Good

Over: WILLOW CREEK

00.20 E SWANSON ROAD, Porter, IN

Built 2011 Load: 32.7 t ADT: 920

JOSEPH AVENUE

Good

Over: ROBBINS DITCH

00.10 W BLACKSTONE CIRCLE, Porter, IN

Built 2012 Load: 32.7 t ADT: 500

CR 250W

Good

Over: SALT CREEK

01.10 S JCT SR 130, Porter, IN

Built 2011 Load: 32.7 t ADT: 6,850

CR 1100N

Good

Over: COFFEE CREEK

00.30 E SR 49, Porter, IN

Built 2013 Load: 32.7 t ADT: 3,410

CR 600E

Good

Over: LITTLE CALUMET RIVER

00.20 S CR 1350N, Porter, IN

Built 2014 Load: 32.7 t ADT: 200

GATEWAY BOULEVARD

Good

Over: JOHNSON DITCH

00.40 E SR 49, Porter, IN

Built 2015 Load: 32.7 t ADT: 290

GATEWAY BOULEVARD

Good

Over: COFFEE CREEK

00.50 E SR 49, Porter, IN

Built 2015 Load: 32.7 t ADT: 290

PORTER AVENUE

Good

Over: COFFEE CREEK

00.10 E CALUMET RD, Porter, IN

Built 2015 Load: 32.7 t ADT: 5,330

CR 1275N

Good

Over: BRANCH OF KEMPER DITCH

00.30 E 600 E, Porter, IN

Built 2016 Load: 32.7 t ADT: 120

CENTRAL AVENUE

Good

Over: ROBBINS DITCH

00.42 E, HAMSTROM ROAD, Porter, IN

Built 2020 Load: 32.7 t ADT: 11,200

CR 700N

Good

Over: SALT CREEK

00.20 E SR 149, Porter, IN

Built 2019 Load: 33.7 t ADT: 3,490

SMOKE ROAD

Good

Over: JONES DITCH

00.40 S CR 600 S, Porter, IN

Built 2023 Load: 33.7 t ADT: 870

SR 8

Good

Over: CORNELL DITCH

04.80 E US 231, Porter, IN

Built 1952 Load: 34.0 t ADT: 4,768

CALUMET AVENUE

Good

Over: CSX RAILROAD

00.10 S CR 900N, Porter, IN

Built 1934 Load: 34.7 t ADT: 3,900

OLD PORTER ROAD

Good

Over: SALT CREEK

00.20 W SALT CREEK RD, Porter, IN

Built 1970 Load: 35.3 t ADT: 2,650

I-94 WB

Good

Over: NS RR

01.36 E US 20, Porter, IN

Built 1966 Load: 35.4 t ADT: 4,035

SR 149

Good

Over: LITTLE CALUMET RIVER

00.14 S US 12, Porter, IN

Built 1970 Load: 35.6 t ADT: 5,485

CR 900S

Good

Over: BREYFOGEL DITCH

00.70 E CR 400 W, Porter, IN

Built 2014 Load: 36.0 t ADT: 350

SR 49

Good

Over: PLEASANT TWP DITCH

01.69 S SR 8, Porter, IN

Built 2009 Load: 36.3 t ADT: 4,070

SR 2

Good

Over: SIEVERS CREEK

04.15 W US 30, Porter, IN

Built 1988 Load: 36.9 t ADT: 6,896

CR 400S

Good

Over: KOSELKI DITCH

00.40 W CR 450 E, Porter, IN

Built 2015 Load: 37.6 t ADT: 270

LOST TREE DRIVE

Good

Over: SAND CREEK

00.10 E HIGHLAND DRIVE, Porter, IN

Built 2001 Load: 38.2 t ADT: 200

SR 49 NB

Good

Over: NS RR

01.04 S I-94, Porter, IN

Built 1969 Load: 38.6 t ADT: 14,288

SR 49 SB

Good

Over: NS RR

01.04 S I-94, Porter, IN

Built 1969 Load: 38.6 t ADT: 14,288

SR 49 NB

Good

Over: GTW RR

00.45 N SR 2, Porter, IN

Built 1987 Load: 39.2 t ADT: 15,327

SR 49 SB

Good

Over: GTW RR

00.45 N SR 2, Porter, IN

Built 1987 Load: 39.2 t ADT: 14,970

CALUMET ROAD

Good

Over: LITTLE CALUMET RIVER

00.40 N INDIAN BOUNDARY, Porter, IN

Built 1992 Load: 40.8 t ADT: 430

CR 50W

Good

Over: COBB DITCH

00.60 S CR 600 S, Porter, IN

Built 2021 Load: 41.5 t ADT: 8

SR 2

Good

Over: SAGER RUN

00.07 W US 30, Porter, IN

Built 2022 Load: 41.8 t ADT: 13,901

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

Related

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