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)

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.

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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.