Lake County, IN

488 public highway bridges

Lake County Bridge Snapshot

Lake County, Indiana contains 488 public highway bridges in the FHWA National Bridge Inventory. Roughly 28.9% are rated “Good,” 24% “Fair,” 5.5% “Poor,” and 5.5% 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.

488

Total Bridges

28.9%

Good

5.5%

Poor

5.5%

Structurally Deficient

Condition Distribution

Good

28.9% (141)

Fair

24% (117)

Poor

5.5% (27)

SD

5.5% (27)

All Bridges (488)

Sort:

SR 912 RAMP NW

Over: LITTLE CALUMET RIVER

00.22 E I-80, Lake, IN

Built 1999 Load: 31.1 t ADT: 6,652

HARRISON STREET

Over: TURKEY CREEK

00.30 S of 61st Ave, Lake, IN

Built 1950 Load: 31.1 t ADT: 6,146

SR 2

Over: SPRING RUN CREEK

00.63 W SR 55, Lake, IN

Built 1993 Load: 31.4 t ADT: 10,477

I-65 NB

Over: TURKEY CREEK

02.70 N US 30, Lake, IN

Built 1965 Load: 31.8 t ADT: 53,256

SR 912

Over: NS RR

00.25 W I-80, Lake, IN

Built 1961 Load: 32.1 t ADT: 53,949

109TH AVENUE

Over: WEST CREEK

00.30 W. of US 41, Lake, IN

Built 1966 Load: 32.3 t ADT: 11,794

SR 912 RAMP NEC

Over: NS RR, RAMP NER, RD

01.40 W US 12, Lake, IN

Built 1980 Load: 32.7 t ADT: 3,781

I-80 EB/WB

Over: BURNS DITCH/DEEP RIVER

00.04 W I-90, Lake, IN

Built 1963 Load: 32.7 t ADT: 19,778

STATE LINE ROAD

Over: SINGLETON DITCH

00.00 Int of 236th Ave, Lake, IN

Built 1991 Load: 32.7 t ADT: 175

LIVERPOOL ROAD

Over: TURKEY CREEK

00.30 N of 61st Ave, Lake, IN

Built 1998 Load: 32.7 t ADT: 6,025

MONON ROAD

Over: SINGLETON DITCH

01.00 N. of 221st Ave, Lake, IN

Built 1988 Load: 32.7 t ADT: 940

PARRISH AVENUE

Over: SINGLETON DITCH

00.60 S. of 219th Ave, Lake, IN

Built 1997 Load: 32.7 t ADT: 633

CLAY STREET

Over: BURNS DITCH

00.40 N. of CENTRAL, Lake, IN

Built 1997 Load: 32.7 t ADT: 2,849

CENTRAL AVENUE

Over: BURNS DITCH

00.60 W. of CLAY ST, Lake, IN

Built 1993 Load: 32.7 t ADT: 4,006

LIVERPOOL ROAD

Over: DEEP RIVER

00.40 W. of STATE ST, Lake, IN

Built 1991 Load: 32.7 t ADT: 2,143

MORSE STREET

Over: CEDAR CREEK

00.10 N. of 141st St, Lake, IN

Built 2002 Load: 32.7 t ADT: 5,672

10TH ST

Over: DUCK CREEK

00.20 W of COUNTY LINE RD, Lake, IN

Built 1993 Load: 32.7 t ADT: 7,149

KEILMAN STREET

Over: HART DITCH

00.10 E. of HART ST, Lake, IN

Built 2003 Load: 32.7 t ADT: 1,293

MILL STREET

Over: CEDAR CREEK

00.20 N. of MAIN ST., Lake, IN

Built 1991 Load: 32.7 t ADT: 4,075

INDUSTRIAL HWY

Over: NICTD RAILROAD

00.10 E. of CLARK ST., Lake, IN

Built 1938 Load: 32.7 t ADT: 10,108

OLD RIDGE ROAD

Over: DEEP RIVER

00.20 S.E. of LAKE PARK A, Lake, IN

Built 1981 Load: 32.8 t ADT: 14,235

GRAND BLVD.

Over: DEEP RIVER

00.40 S. of CENTRAL AVE, Lake, IN

Built 1975 Load: 33.2 t ADT: 3,862

KENNEDY AVENUE

Over: GRAND CALUMET RIVER

00.30 N. of US 20, Lake, IN

Built 1980 Load: 33.4 t ADT: 8,688

US 30

Over: HART DITCH

02.54 W US 41, Lake, IN

Built 1995 Load: 33.7 t ADT: 31,823

201ST AVENUE

Over: GRIESEL DITCH

00.20 E. of CLARK ST., Lake, IN

Built 1993 Load: 33.8 t ADT: 176

GRACE STREET

Over: CADY MARSH DITCH

00.30 S. of RIDGE RD., Lake, IN

Built 1985 Load: 34.0 t ADT: 6,025

151ST STREET

Over: INDIANA HARBOR CANAL

00.30 E. of INDY Blvd, Lake, IN

Built 1977 Load: 34.1 t ADT: 8,243

MISSISSIPPI STREET

Over: SINGLETON DITCH

00.60 N of 205th Ave, Lake, IN

Built 1965 Load: 34.2 t ADT: 238

SR 55

Over: GRIESEL DITCH

02.05 S SR 2, Lake, IN

Built 1981 Load: 34.3 t ADT: 1,682

113TH AVENUE

Over: NILES DITCH

00.40 E of IOWA ST, Lake, IN

Built 1970 Load: 34.6 t ADT: 3,137

SR 912

Over: LITTLE CALUMET RIVER

00.22 E I-80, Lake, IN

Built 2002 Load: 35.3 t ADT: 30,521

BELSHAW ROAD

Over: CEDAR CREEK

00.60 E. of CLINE AVE, Lake, IN

Built 2004 Load: 35.4 t ADT: 1,777

SR 912 MARINA ACC

Over: CN RR, IHB RR

00.83 W US 12, Lake, IN

Built 1998 Load: 35.6 t ADT: 4,799

I-90 RAMP TO SR 91

Over: EJ&E RR

00.47 N I-90, Lake, IN

Built 1984 Load: 36.0 t ADT: 3,228

KENNEDY AVENUE

Over: CONRAIL/IHB RR

00.20 S. of US 20, Lake, IN

Built 1986 Load: 36.8 t ADT: 8,530

I-90 RAMP FROM 912

Over: EJ&E RR

00.47 N I-90, Lake, IN

Built 1984 Load: 36.9 t ADT: 2,692

I-65 NB

Over: SINGLETON DITCH

01.91 S SR 2, Lake, IN

Built 1964 Load: 37.6 t ADT: 14,069

I-65 SB

Over: SINGLETON DITCH

01.91 S SR 2, Lake, IN

Built 1964 Load: 37.6 t ADT: 14,069

129TH AVENUE

Over: NILES DITCH

01.00 W of GIBSON ST., Lake, IN

Built 1960 Load: 37.6 t ADT: 5

US 12/SR 912

Over: CSX RR

00.09 W SR 312, Lake, IN

Built 1965 Load: 37.8 t ADT: 30,146

912 E RAMP TO I-90

Over: GRAND CALUMET RIVER

00.08 N I-90, Lake, IN

Built 1984 Load: 38.0 t ADT: 5,712

HOHMAN AVENUE

Over: LITTLE CALUMET RIVER

00.20 S. of 173rd St, Lake, IN

Built 2002 Load: 38.0 t ADT: 10,750

I-80/ I-94 EB

Over: NS RR [KANKAKEE], IHB RR

00.70 E US 41, Lake, IN

Built 2005 Load: 39.2 t ADT: 86,846

I-80/ I-94 WB

Over: NS RR [KANKAKEE], IHB RR

00.70 E US 41, Lake, IN

Built 2005 Load: 39.2 t ADT: 88,825

RAMP B - WB

Over: CONRAIL RR

00.19 E US 12, Lake, IN

Built 1983 Load: 39.9 t ADT: 1,239

151ST AVENUE

Over: WEST CREEK

00.90 E. of SHEFFIELD AVE, Lake, IN

Built 1967 Load: 40.3 t ADT: 2,047

MISSISSIPPI STREET

Over: BROWN DITCH

00.60 N of 217th Ave, Lake, IN

Built 1995 Load: 42.0 t ADT: 119

I-90 RAMP FROM 912

Over: EJ&E RR

00.53 N I-90, Lake, IN

Built 1984 Load: 43.6 t ADT: 2,692

I-90 RAMP TO SR 91

Over: EJ&E RR

00.53 N I-90, Lake, IN

Built 1984 Load: 43.6 t ADT: 3,228

US 12

Over: INDIANA HARBOR CANAL

00.52 E US 20, Lake, IN

Built 1996 Load: 43.7 t ADT: 16,872

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

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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 6, 2026