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)

Sort:

SR 49 NB

Over: US 6 EB

04.06 E SR 149, Porter, IN

Built 1985 ADT: 15,438

SR 49 SB

Over: US 6 WB

04.06 E SR 149, Porter, IN

Built 1985 ADT: 14,995

RR SERVICE RD

Over: SR 249

02.00 N I-94, Porter, IN

Built 2000 ADT: 20

STEEL MILL RAMP

Over: US 12 EB

00.24 E SR 149, Porter, IN

Built 1968 ADT: 118

STEEL MILL RAMP

Over: US 12 WB

00.24 E SR 149, Porter, IN

Built 1968 ADT: 240

AMTRAK RR

Over: US 20

01.91 E SR 149, Porter, IN

Built 1934 ADT: 22,496

US 20

Over: CHANDLER ROAD

00.88 E SR 520, Porter, IN

Built 1971 ADT: 110

N&S RR

Over: US 30 WB

00.58 E SR 2, Porter, IN

Built 1939 ADT: 15,500

N&S RR

Over: US 30 WB

00.72 W SR 130, Porter, IN

Built 1939 ADT: 14,250

SR 49 NB

Over: COMFORD ROAD

00.21 S US-30, Porter, IN

Built 1987 ADT: 208

SR 49 SB

Over: COMFORD ROAD

00.21 S US-30, Porter, IN

Built 1987 ADT: 208

SR 49 NB

Over: US 30 WBL

01.13 S SR-2, Porter, IN

Built 1987 ADT: 8,635

SR 49 NB

Over: SR-2 EBL

01.13 N US-30, Porter, IN

Built 1987 ADT: 11,082

SR 49 SB

Over: SR-2 WBL

01.13 N US-30, Porter, IN

Built 1987 ADT: 8,928

SR 49 NB

Over: CO RD 300 N (EVANS RD)

00.56 N SR-2, Porter, IN

Built 1987 ADT: 3,513

SR 49 SB

Over: CO RD 300 N (EVANS RD)

00.56 N SR-2, Porter, IN

Built 1987 ADT: 4,898

CALUMET AVE

Over: SR 49 SB

01.02 S US 6, Porter, IN

Built 1984 ADT: 14,995

SR 49 NB

Over: CR 900 NORTH

00.98 N US-6, Porter, IN

Built 1985 ADT: 132

SR 49 SB

Over: CR 900 NORTH

00.98 N US-6, Porter, IN

Built 1985 ADT: 132

SR 49 NB

Over: I-90 WBL (ITR)

01.61 N US-6, Porter, IN

Built 1985 ADT: 14,376

SR 49 SB

Over: I-90 WBL (ITR)

01.61 N US-6, Porter, IN

Built 1985 ADT: 15,930

RAILROAD STREET

Over: SR 49 NB

01.01 N I-90, Porter, IN

Built 1969 ADT: 204

RAILROAD STREET

Over: SR 49 SB

01.01 N I-90, Porter, IN

Built 1969 ADT: 204

SR 49

Over: I-94 EBL

01.02 S US-20, Porter, IN

Built 1969 ADT: 28,700

OLD SR 49

Over: CALUMET TRAIL

00.05 N US-12, Porter, IN

Built 1930 ADT: 20

SR 149

Over: I-94 WBL

00.39 N US-20, Porter, IN

Built 1969 ADT: 35,810

SR 249 NB

Over: I-94 WBL

00.24 N US-20, Porter, IN

Built 1967 ADT: 31,043

SR 249 SB

Over: I-94 WBL

00.24 N US-20, Porter, IN

Built 1967 ADT: 41,990

SR 249C

Over: US-12 WBL

00.27 N SR 249, Porter, IN

Built 2004 ADT: 3,650

DOMBEY RD

Over: I-90 WB

00.63 E I-94, Porter, IN

Built 1956 ADT: 17,335

I-90 EB

Over: CRUIKSHANK ROAD

01.50 E I-94, Porter, IN

Built 1956 ADT: 3,751

I-90 WB

Over: CRUIKSHANK RD

01.50 E I-94, Porter, IN

Built 1956 ADT: 3,751

CR 600W/WILLOWCRK

Over: i-90 WB

02.26 E I-94, Porter, IN

Built 1956 ADT: 17,275

I-90 RAMP/CR 600W

Over: I-90 WBL

02.45 E I-94, Porter, IN

Built 1984 ADT: 32,455

I-90 EB

Over: HAMSTROM RD/CR 525W

02.50 W SR 149, Porter, IN

Built 1956 ADT: 6,255

I-90 WB

Over: HAMSTROM RD

02.50 W SR 149, Porter, IN

Built 1956 ADT: 6,255

I-90 EB

Over: CENTRAL AVE/CR 975N

01.78 W SR 149, Porter, IN

Built 1956 ADT: 11,075

I-90 WB

Over: CENTRAL AVE/CR 975N

01.78 W SR 149, Porter, IN

Built 1956 ADT: 11,075

I-90 EB

Over: SAMUELSON RD/CR 450W

01.56 W SR 149, Porter, IN

Built 1956 ADT: 5,400

I-90 WB

Over: SAMUELSON RD/CR 450W

01.56 W SR 149, Porter, IN

Built 1956 ADT: 5,400

MCCOOL RD/CR 400W

Over: I-90 WB

01.04 W SR 149, Porter, IN

Built 1956 ADT: 17,335

I-90 EB

Over: SR 149

04.25 W SR 49, Porter, IN

Built 1956 ADT: 11,293

I-90 WB

Over: SR 149

04.25 W SR 49, Porter, IN

Built 1956 ADT: 11,293

I-90 EB

Over: BABCOCK RD/CR 200W

01.09 E SR 149, Porter, IN

Built 1956 ADT: 1,629

I-90 WB

Over: BABCOCK RD/CR 200W

01.09 E SR 149, Porter, IN

Built 1956 ADT: 1,629

SWANSON RD/150 W

Over: I-90 WB

01.59 E SR 149, Porter, IN

Built 1956 ADT: 16,295

ESSERMAN RD/50 W

Over: I-90 WB

01.65 W SR 49, Porter, IN

Built 1956 ADT: 17,275

MERIDIAN ROAD

Over: I-90 WB

01.13 W SR 49, Porter, IN

Built 1956 ADT: 17,275

i-90 WB

Over: I-90 RAMP TO SR 49

00.31 W SR 49, Porter, IN

Built 1956 ADT: 26,180

CR 200E

Over: I-90 WB

00.92 E SR 49, Porter, IN

Built 1956 ADT: 13,060

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

Related

Browse all → | Rankings →

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

Reviewed byPlainbridges Editorial, Plain Bridges Editorial Team · June 5, 2026