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)

US 30

Fair

Over: SALT CREEK

00.23 W SR 2, Porter, IN

Built 1938 Load: 33.0 t ADT: 23,497

SR 8

Fair

Over: CROOKED CREEK

01.87 E SR 49, Porter, IN

Built 1992 Load: 33.7 t ADT: 3,278

CR 50E

Fair

Over: PLEASANT TOWNSHIP DITCH

00.60 N 1050 S, Porter, IN

Built 1930 Load: 33.7 t ADT: 190

CR 400N

Fair

Over: SALT CREEK

00.20 E CR 375 W, Porter, IN

Built 1963 Load: 33.8 t ADT: 1,040

I-94 EB

Fair

Over: CSX RR

00.63 E SR 49, Porter, IN

Built 1969 Load: 34.0 t ADT: 57,732

I-94 WB

Fair

Over: CSX RR

00.63 E SR 49, Porter, IN

Built 1969 Load: 34.0 t ADT: 28,915

CENTRAL AVENUE

Fair

Over: WILLOW CREEK

00.20 SW SWANSON RD, Porter, IN

Built 1973 Load: 34.0 t ADT: 8,390

I-94 EB

Fair

Over: NS RR

01.36 E US 20, Porter, IN

Built 1969 Load: 35.4 t ADT: 80,516

CR 50W

Fair

Over: SANDY HOOK DITCH

00.10 N JCT. SR 8, Porter, IN

Built 1930 Load: 35.6 t ADT: 10

SR 49 NB

Fair

Over: COFFEE CREEK

01.85 S I-94, Porter, IN

Built 1969 Load: 36.0 t ADT: 11,444

SR 49 SB

Fair

Over: COFFEE CREEK

01.85 S I-94, Porter, IN

Built 1969 Load: 36.0 t ADT: 13,666

CR 300S

Fair

Over: CROOKED CREEK

00.10 E CR 525 E, Porter, IN

Built 1930 Load: 36.0 t ADT: 440

INDIAN BOUNDARY RD

Fair

Over: COFFEE CREEK

00.20 E CALUMET ROAD, Porter, IN

Built 1980 Load: 36.9 t ADT: 132

COUNTY LINE ROAD

Fair

Over: WEST BEACH ROAD

0.3 MILES NORTH OF U.S. R, Porter, IN

Built 1991 Load: 37.2 t ADT: 10,000

CR 900S

Fair

Over: SANDY HOOK DITCH

00.10 W CR 150 W, Porter, IN

Built 1930 Load: 38.2 t ADT: 410

CR 400N

Fair

Over: HUTTON DITCH

00.20 E CR 325E, Porter, IN

Built 1985 Load: 38.6 t ADT: 2,530

SR 2

Fair

Over: CSX RR

02.80 W US 6, Porter, IN

Built 1956 Load: 39.5 t ADT: 7,599

I-94 EB

Fair

Over: AMTRAK

00.54 W SR 49, Porter, IN

Built 1969 Load: 40.4 t ADT: 40,081

I-94 WB

Fair

Over: AMTRAK

00.54 W SR 49, Porter, IN

Built 1969 Load: 40.4 t ADT: 40,435

US 20

Fair

Over: LITTLE CALUMET RIVER

01.56 W SR 49, Porter, IN

Built 1993 Load: 41.8 t ADT: 7,745

I-90 EB/WB

Fair

Over: COFFEE CREEK

00.10 E CR 200 E, Porter, IN

Built 1957 Load: 46.3 t ADT: 26,180

I-90 EB

Fair

Over: SALT CREEK

00.36 W SR 149, Porter, IN

Built 1956 Load: 47.7 t ADT: 16,295

I-90 WB

Fair

Over: SALT CREEK

00.36 W SR 149, Porter, IN

Built 1956 Load: 47.7 t ADT: 16,295

I-90 EB

Fair

Over: CSX RR

00.16 E SR 149, Porter, IN

Built 1956 Load: 48.6 t ADT: 16,295

I-90 WB

Fair

Over: CSX RR

00.16 E SR 149, Porter, IN

Built 1956 Load: 48.6 t ADT: 16,295

US 231

Fair

Over: DOG LEG DITCH

0.48 N of S Jct SR 2, Porter, IN

Built 1983 Load: 49.2 t ADT: 8,585

I-90 EB

Fair

Over: PRAIRIE DUNELAND BIKE TR

01.71 W SR 149, Porter, IN

Built 1956 Load: 50.4 t ADT: 16,295

I-90 WB

Fair

Over: PRAIRIE-DUNELAND BIKE TR

01.71 W SR 149, Porter, IN

Built 1956 Load: 50.4 t ADT: 16,295

I-90 EB

Fair

Over: CONRAIL RR

01.24 E I-94, Porter, IN

Built 1956 Load: 53.5 t ADT: 17,335

I-90 WB

Fair

Over: CONRAIL RR

01.24 E I-94, Porter, IN

Built 1956 Load: 53.5 t ADT: 17,335

I-90

Fair

Over: WILLOW CREEK

00.05 S RR, Porter, IN

Built 1957 Load: 90.7 t ADT: 34,670

SR 2

Fair

Over: W BRANCH CROOKED CREEK

03.32 E SR 49, Porter, IN

Built 1990 Load: 97.2 t ADT: 8,009

STONE AVENUE

Fair

Over: WILLOW CREEK

00.50 W WILLOWCREEK RD, Porter, IN

Built 1966 Load: 97.2 t ADT: 7,280

CR 900S

Fair

Over: BRANCH COBBS CREEK

00.30 W JCT SR 2, Porter, IN

Built 1975 Load: 97.2 t ADT: 610

SR 249 SB

Good

Over: LITTLE CALUMET RIVER

00.71 N I-94, Porter, IN

Built 1972 Load: 22.4 t ADT: 12,140

CR 600S

Good

Over: KOSELKI DITCH

0.4 MILES W CR 450 E, Porter, IN

Built 1985 Load: 22.7 t ADT: 410

CR 450E

Good

Over: KOSELKI DITCH

00.30 N 500 S, Porter, IN

Built 1930 Load: 24.9 t ADT: 160

SR 249 NB

Good

Over: MUCK POCKET-SALT CREEK

00.24 S US 12, Porter, IN

Built 1972 Load: 25.6 t ADT: 4,343

CR 600E

Good

Over: REEVES DITCH

00.80 N 1200 SO, Porter, IN

Built 1930 Load: 25.9 t ADT: 60

CR 500S

Good

Over: KOSELKI DITCH

00.30 W CR 450 E, Porter, IN

Built 1976 Load: 27.5 t ADT: 120

SR 249 SB

Good

Over: MUCK POCKET-SALT CREEK

00.24 S US 12, Porter, IN

Built 1972 Load: 27.9 t ADT: 5,909

I-94 EB

Good

Over: SALT CREEK

01.25 W SR 149, Porter, IN

Built 1969 Load: 27.9 t ADT: 35,803

I-94 WB

Good

Over: SALT CREEK

01.25 W SR 149, Porter, IN

Built 1969 Load: 27.9 t ADT: 35,203

SR 49 NB

Good

Over: NS RR

00.50 S US 30, Porter, IN

Built 1987 Load: 28.2 t ADT: 9,466

SR 49 SB

Good

Over: NS RR

00.50 S US 30, Porter, IN

Built 1987 Load: 28.2 t ADT: 9,235

CR 625W

Good

Over: KANKAKEE RIVER

01.60 S CR 1000 S, Porter, IN

Built 2021 Load: 28.8 t ADT: 1,320

CR 100W

Good

Over: HALL CREEK

00.70 S CR 200 S, Porter, IN

Built 2012 Load: 29.2 t ADT: 570

CR 300S

Good

Over: AHLGRIM DITCH

0.2 MILES E OF S.R. 49, Porter, IN

Built 2016 Load: 29.2 t ADT: 970

SR 49

Good

Over: CROOKED CREEK

02.50 S SR 8, Porter, IN

Built 2003 Load: 30.1 t ADT: 4,070

MANDER ROAD

Good

Over: KOSELKI DITCH

00.50 NE JCT US 6, Porter, IN

Built 1975 Load: 30.5 t ADT: 320

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.