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)

SR 49 NB

Good

Over: CSX RR, LITTLE CALUMET R

00.37 S I-94, Porter, IN

Built 1970 Load: 41.8 t ADT: 12,304

SR 49 SB

Good

Over: CSX RR, LITTLE CALUMET R

00.37 S I-94, Porter, IN

Built 1970 Load: 42.8 t ADT: 12,304

US 6

Good

Over: BRANCH OF WILLOWCREEK

02.44 E SR 51, Porter, IN

Built 2009 Load: 43.1 t ADT: 18,331

SR 149

Good

Over: SALT CREEK

01.05 S US 6, Porter, IN

Built 1955 Load: 45.0 t ADT: 10,655

US 6

Good

Over: SALT CREEK

00.15 E SR 149, Porter, IN

Built 1985 Load: 45.7 t ADT: 16,012

US 20

Good

Over: WILLOW CREEK

01.60 E SR 51, Porter, IN

Built 1948 Load: 45.7 t ADT: 10,274

SR 149

Good

Over: SALT CREEK

00.93 N US 6, Porter, IN

Built 1955 Load: 46.3 t ADT: 2,533

SR 49

Good

Over: COOK DITCH

04.01 S SR 8, Porter, IN

Built 1984 Load: 47.6 t ADT: 3,922

SR 130

Good

Over: SALT CREEK

01.00 W SR 149, Porter, IN

Built 1932 Load: 48.3 t ADT: 9,572

CR 1050N

Good

Over: COFFEE CREEK

00.30 E JCT SR 49, Porter, IN

Built 1997 Load: 48.3 t ADT: 1,720

US 20

Good

Over: SALT CREEK

01.13 W SR 149, Porter, IN

Built 1994 Load: 51.2 t ADT: 11,285

CR 250E

Good

Over: LITTLE CALUMET RIVER

00.30 N CR 1225 N, Porter, IN

Built 2023 Load: 51.8 t ADT: 3,220

I-94 EB

Good

Over: LITTLE CALUMET RIVER

01.54 W SR 49, Porter, IN

Built 1969 Load: 52.5 t ADT: 40,081

I-94 WB

Good

Over: LITTLE CALUMET RIVER

01.54 W SR 49, Porter, IN

Built 1969 Load: 52.5 t ADT: 80,516

SR 2

Good

Over: WOLF CREEK

06.61 W US 30, Porter, IN

Built 2022 Load: 61.9 t ADT: 5,898

US 6

Good

Over: PEDESTRIAN TUNNEL

01.42 E SR 51 E JCT, Porter, IN

Built 2009 Load: 68.4 t ADT: 18,305

MINERAL SPRING

Poor

Over: LITTLE CALUMET RIVER

00.40 N BEAM ST., Porter, IN

Built 1964 Load: 5.2 t ADT: 400

CR 1000S

Poor

Over: REEVES DITCH

01.00 E CR 600 E, Porter, IN

Built 1930 Load: 14.3 t ADT: 80

CR 600N

Poor

Over: SALT CREEK

00.25 W JCT SR 149, Porter, IN

Built 1970 Load: 16.5 t ADT: 1,670

CR 300S

Poor

Over: LUDINGTON DITCH

00.40 E CR 500 W, Porter, IN

Built 1972 Load: 20.7 t ADT: 340

CR 200W

Poor

Over: DAMON RUN

00.70 N U.S. 6, Porter, IN

Built 1968 Load: 22.0 t ADT: 3,230

WILSON ROAD

Poor

Over: DUNES CREEK

00.00 DUNES STATE PARK, Porter, IN

Built 1934 Load: 23.0 t ADT: 143

CR 300W

Poor

Over: CORNELL DITCH

00.60 N 750 S, Porter, IN

Built 1930 Load: 25.3 t ADT: 110

CR 1050S

Poor

Over: PLEASANT TOWNSHIP DITCH

00.50 W CR 50 E, Porter, IN

Built 1930 Load: 26.2 t ADT: 200

CR 600E

Poor

Over: CROOKED CREEK

00.70 N 200 N, Porter, IN

Built 1971 Load: 26.6 t ADT: 80

WAVERLY ROAD

Poor

Over: LITTLE CALUMET RIVER

00.10 N ACKERMAN RD, Porter, IN

Built 1966 Load: 27.2 t ADT: 5,130

LENBURG ROAD

Poor

Over: SALT CREEK

00.30 E MCCOOL RD, Porter, IN

Built 1968 Load: 28.6 t ADT: 3,140

DIVISION ROAD

Poor

Over: HUTTON DITCH

00.40 W CR 575 E, Porter, IN

Built 1961 Load: 32.4 t ADT: 190

US 12 EB

Poor

Over: BURNS DITCH (DEEP RIVER)

00.94 W SR 249, Porter, IN

Built 1970 Load: 42.4 t ADT: 4,635

US 12 WB

Poor

Over: BURNS DITCH (DEEP RIVER)

00.94 W SR 249, Porter, IN

Built 1970 Load: 42.4 t ADT: 1,763

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.