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:

I-90 WB

Over: SHEFFIELD AVE

00.66 W US 41, Lake, IN

Built 1956 ADT: 11,677

I-90 EB

Over: US 41/CALUMET AVE

01.31 W SR 312, Lake, IN

Built 1956 ADT: 21,597

I-90 WB

Over: US 41/CALUMET AVE

01.31 W SR 312, Lake, IN

Built 1956 ADT: 21,597

141ST STREET

Over: I-90 WB TO 141ST ST

00.42 E US 41, Lake, IN

Built 1956 ADT: 2,300

I-90 EB

Over: HUEHN ST

00.50 W SR 312, Lake, IN

Built 1956 ADT: 133

I-90 WB

Over: HUEHN ST

00.50 W SR 312, Lake, IN

Built 1956 ADT: 133

I-90 EB

Over: GOSTLIN ST

00.34 W SR 312, Lake, IN

Built 1956 ADT: 5,697

I-90 WB

Over: GOSTLIN ST

00.34 W SR 312, Lake, IN

Built 1956 ADT: 5,697

I-90 EB

Over: COLUMBIA AVE

00.14 W SR 312, Lake, IN

Built 1956 ADT: 133

I-90 WB

Over: COLUMBIA AVE

00.14 W SR 312, Lake, IN

Built 1956 ADT: 133

I-90 EBL

Over: SR 312/CHICAGO ST

01.31 E US 41, Lake, IN

Built 1956 ADT: 13,996

I-90 WB

Over: SR 312/CHICAGO ST

01.31 E US 41, Lake, IN

Built 1956 ADT: 13,996

I-90 EB

Over: HOFFMAN ST

00.25 E SR 312, Lake, IN

Built 1956 ADT: 133

I-90 WB

Over: HOFFMAN ST

00.25 E SR 312, Lake, IN

Built 1956 ADT: 133

I-90 EB

Over: 149TH ST

00.41 E SR 312, Lake, IN

Built 1956 ADT: 133

I-90 WB

Over: 149TH ST

00.41 E SR 312, Lake, IN

Built 1956 ADT: 133

I-90 EB

Over: 150TH STREET

00.55 E SR 312, Lake, IN

Built 1956 ADT: 2,399

I-90 WB

Over: 150TH ST

00.55 E SR 312, Lake, IN

Built 1956 ADT: 2,399

I-90 EB

Over: GR CALUMET RIV, DR, 2 RR

00.44 W US 20, Lake, IN

Built 1956 ADT: 133

I-90 WB

Over: ROXANA DR

00.44 W US 20, Lake, IN

Built 1956 ADT: 133

I-90 EB

Over: US 20/SR 152/INDY BLV

01.51 E SR 312, Lake, IN

Built 1956 ADT: 33,210

I-90 WB

Over: US 20/SR 152

01.51 E SR 312, Lake, IN

Built 1956 ADT: 33,210

I-90 EB

Over: NIPSCO ACCESS ROAD

00.52 E US 20, Lake, IN

Built 1956 ADT: 133

I-90 WB

Over: NIPSCO ACCESS ROAD

00.52 E US 20, Lake, IN

Built 1956 ADT: 133

I-90 EB

Over: KENNEDY AVE

01.01 E US 20, Lake, IN

Built 1956 ADT: 15,504

I-90 WB

Over: KENNEDY AVE

01.01 E US 20, Lake, IN

Built 1956 ADT: 15,504

CSS & SB RR

Over: I-90 WB

02.04 W US 12, Lake, IN

Built 1956 ADT: 20,365

I-90 RAMP TO SR 91

Over: SR912 TO I-90 EBL

00.64 E SR 912, Lake, IN

Built 1984 ADT: 2,900

I-90 EB

Over: SR 912E RAMP TO I-90 EBL

00.00 JCT I-90, Lake, IN

Built 1984 ADT: 2,900

I-90 WBL

Over: SR 912E RAMP TO I-90 EBL

00.00 JCT I-90, Lake, IN

Built 1984 ADT: 2,900

I-90 EB

Over: AIRPORT RD

02.03 E SR 912, Lake, IN

Built 1956 ADT: 10,736

I-90 WB

Over: AIRPORT RD

02.03 E SR 912, Lake, IN

Built 1956 ADT: 10,736

I-90 EB

Over: BRIDGE ST

01.15 E US 12, Lake, IN

Built 1956 ADT: 133

I-90 WB

Over: BRIDGE ST

01.15 E US 12, Lake, IN

Built 1956 ADT: 133

I-90 EB

Over: BUCHANAN ST

02.13 E US 12, Lake, IN

Built 1956 ADT: 8,004

I-90 WB

Over: BUCHANAN ST

02.13 E US 12, Lake, IN

Built 1956 ADT: 9,832

I-90 EB

Over: VIRGINIA ST

01.70 W US 12, Lake, IN

Built 1956 ADT: 1,000

I-90 WB

Over: VIRGINIA ST

01.70 W US 12, Lake, IN

Built 1956 ADT: 6,668

I-90 EB

Over: TENNESSEE ST

00.90 W US 12, Lake, IN

Built 1956 ADT: 1,400

I-90 WB

Over: TENNESSEE ST

00.90 W US 12, Lake, IN

Built 1956 ADT: 3,356

I-90

Over: TAYLOR RD

04.67 E US 12, Lake, IN

Built 2004 ADT: 1,000

I-90 EB

Over: US 12/20 EB

04.69 E US 12, Lake, IN

Built 2004 ADT: 22,112

I-90 WB

Over: TAYLOR ROAD

04.69 E US 12, Lake, IN

Built 2004 ADT: 931

I-90 RAMP

Over: US 12/20

00.15 E US 12, Lake, IN

Built 2003 ADT: 21,519

US-12 TO/FROM I-90

Over: I-90 TO I-65 RAMP H

00.29 E US 12, Lake, IN

Built 2003 ADT: 7,620

I-90 EB

Over: I-65 Ramp 17N

00.29 E US 12, Lake, IN

Built 2002 ADT: 1,210

I-90 WB

Over: I-65 ramp 17N

00.29 E US 12, Lake, IN

Built 2002 ADT: 1,210

US 12

Over: I-90>I-65 Ramp H

00.26 S US 12, Lake, IN

Built 2003 ADT: 6,410

I-90 RAMP

Over: I-90 WB

00.66 E US 12, Lake, IN

Built 2003 ADT: 38,880

15TH AVENUE

Over: I-90 WB

00.83 E US 12, Lake, IN

Built 2004 ADT: 19,440

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