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:

113TH AVENUE

Over: I-65 SBL

01.36 N US-231, Lake, IN

Built 1965 ADT: 22,250

I-65 NB

Over: 109TH AVENUE

01.86 N US 231, Lake, IN

Built 1965 ADT: 8,847

109th Avenue

Over: I-65 SB

01.86 N US 231, Lake, IN

Built 1965 ADT: 8,847

E 101ST AVE

Over: I-65 SB

02.50 S US 30, Lake, IN

Built 2021 ADT: 27,450

93RD AVENUE

Over: I-65 SBL

01.70 S US-30, Lake, IN

Built 2000 ADT: 27,450

I-65 NB

Over: US-30 WBL CD/RAMP

05.38 N US-231, Lake, IN

Built 1966 ADT: 3,000

I-65 SB

Over: US-30 EBL

05.38 N US-231, Lake, IN

Built 1966 ADT: 30,220

73RD AVENUE

Over: I-65 SB

00.94 N US 30, Lake, IN

Built 1965 ADT: 49,305

61ST AVENUE

Over: I-65 SBL

02.51 N US-30, Lake, IN

Built 2000 ADT: 51,000

I-65 NB

Over: 53RD AVENUE

03.53 N US-30, Lake, IN

Built 1965 ADT: 4,111

I-65 SB

Over: 53RD AVENUE

03.53 N US-30, Lake, IN

Built 1965 ADT: 4,111

49TH AVENUE

Over: I-65 NB

04.06 N US-30, Lake, IN

Built 1965 ADT: 4,376

49TH AVENUE

Over: I-65 SB

04.06 N US-30, Lake, IN

Built 1965 ADT: 4,376

39TH AVENUE

Over: I-65 NB

05.33 N US-30, Lake, IN

Built 1965 ADT: 541

39TH AVENUE

Over: I-65 SB

05.33 N US-30, Lake, IN

Built 1965 ADT: 541

I-65 NB

Over: 37TH AVE (OLD US 6) WBL

05.61 N US-30, Lake, IN

Built 2001 ADT: 9,290

I-65 SB

Over: 37TH AVE (OLD US 6) WBL

05.61 N US-30, Lake, IN

Built 2001 ADT: 9,290

35TH AVENUE

Over: I-65 NB

05.84 N US-30, Lake, IN

Built 2001 ADT: 541

35TH AVENUE

Over: I-65 SB

05.84 N US 30, Lake, IN

Built 2001 ADT: 907

I-65 NB

Over: CENTRAL AVENUE

00.66 N I-80, Lake, IN

Built 1965 ADT: 118

I-65 SB

Over: CENTRAL AVENUE

00.66 N I-80, Lake, IN

Built 1965 ADT: 118

I-65 NB

Over: 15th AVENUE

01.53 N I-80, Lake, IN

Built 1965 ADT: 14,443

I-65 SB

Over: 15th AVENUE

01.53 N I-80, Lake, IN

Built 1965 ADT: 14,443

COLUMBIA AVENUE

Over: I-80 (I-94) EBL

00.48 E US-41, Lake, IN

Built 1991 ADT: 96,367

I-80 RAMP 2I

Over: SR 152 NB CD ON-RAMP

00.04 W US 41/SR 152, Lake, IN

Built 1993 ADT: 2,094

SR 152 SB TO I-80

Over: I-80 EB RAMP

00.15 S I-80/94, Lake, IN

Built 1993 ADT: 16,000

I-80 WB RAMP "I"

Over: I-80(I-94) WBL-CD-RAMP

00.95 E US-41, Lake, IN

Built 1992 ADT: 3,500

KENNEDY AVENUE

Over: I-80(I-94) EBL-CD-RAMP

00.97 E US-41, Lake, IN

Built 1992 ADT: 3,500

I-80 WB RAMP "I"

Over: KENNEDY AVENUE SBL

00.97 E US-41, Lake, IN

Built 1992 ADT: 32,900

SB RAMP TO I-80/I-

Over: KENNEDY AVENUE SBL

00.97 E US-41, Lake, IN

Built 1992 ADT: 32,900

I-80 WB RAMP TO SR

Over: SR-912 WBL-CD-RAMP

02.52 E US-41, Lake, IN

Built 2001 ADT: 9,903

I-80 EB/WB

Over: SR-912 EBL

02.53 E US-41, Lake, IN

Built 2001 ADT: 40,340

I-80 EB TO SR 912

Over: SR-912 EBL

02.54 E US-41, Lake, IN

Built 2001 ADT: 44,400

COLFAX STREET

Over: I-80 (I-94) WBL

01.02 E SR-912, Lake, IN

Built 1994 ADT: 96,178

BURR STREET

Over: I-80 EBL

01.51 E SR-912, Lake, IN

Built 2000 ADT: 96,230

CLARK STREET

Over: I-80 WBL

02.02 E of SR 912, Lake, IN

Built 2002 ADT: 96,221

HARRISON STREET

Over: I-80 EBL

00.48 W of SR-53, Lake, IN

Built 2002 ADT: 75,589

I-80 EB

Over: I-94 OFF RAMP 15C

00.38 W I-90, Lake, IN

Built 1963 ADT: 4,321

RAMP L-WB TO SR 51

Over: RAMP M (I90 TO WB I80

00.31 W I-90, Lake, IN

Built 1966 ADT: 19,736

I-90

Over: US-12, US-20, & US-41

04.10 W US 41, Lake, IN

Built 1956 ADT: 15,701

I-90 ON RAMP

Over: 108th STREET

00.02 E US 12, Lake, IN

Built 1956 ADT: 133

I-90 EB

Over: 108TH ST

00.26 E US 12, Lake, IN

Built 1956 ADT: 133

I-90 WB

Over: 108TH ST

00.26 E US 12, Lake, IN

Built 1956 ADT: 133

I-90 EB

Over: 112TH ST

00.73 E US 12, Lake, IN

Built 1956 ADT: 133

I-90 WB

Over: 112TH ST

00.73 E US 12, Lake, IN

Built 1956 ADT: 133

I-90 EB

Over: 129TH ST

01.21 W US 41, Lake, IN

Built 1956 ADT: 133

I-90 WB

Over: 129TH ST

01.21 W US 41, Lake, IN

Built 1956 ADT: 133

912WB RAMP TO I-90

Over: SHEFFIELD AVENUE

00.26 W US 41, Lake, IN

Built 1984 ADT: 11,426

I-90 EB RAMP TO 91

Over: SHEFFIELD AVENUE

00.83 W US 41, Lake, IN

Built 1984 ADT: 11,426

I-90 EB

Over: SHEFFIELD AVE

00.66 W US 41, Lake, IN

Built 1956 ADT: 11,426

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