Lake County, IL

286 public highway bridges

Lake County Bridge Snapshot

Lake County, Illinois contains 286 public highway bridges in the FHWA National Bridge Inventory. Roughly 26.9% are rated “Good,” 32.9% “Fair,” 7.7% “Poor,” and 7.7% 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 IL 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.

286

Total Bridges

26.9%

Good

7.7%

Poor

7.7%

Structurally Deficient

Condition Distribution

Good

26.9% (77)

Fair

32.9% (94)

Poor

7.7% (22)

SD

7.7% (22)

All Bridges (286)

Sort:

IL 120 EB

Over: I- 94 TRI STATE TOLL

1.6 M W OF US 41, Lake, IL

Built 2008 ADT: 126,200

IL 120 WB

Over: I- 94 TRI STATE TOLL

1.6 M W OF US 41, Lake, IL

Built 2008 ADT: 95,600

RUSSELL RD

Over: I- 94 SB TRI STATE

1.7 M N IL 173, Lake, IL

Built 2012 ADT: 92,600

RUSSELL RD

Over: I- 94 NB (TRI STATE)

1.7 M N IL 173, Lake, IL

Built 2012 ADT: 92,600

IL 173

Over: I- 94 TRI-STATE

0.75 M W US 41, Lake, IL

Built 2015 ADT: 78,200

US 12 WB

Over: IL 59 SB

.5M W of Il134, Lake, IL

Built 2018 ADT: 12,800

IL 60

Over: I- 94 TRI STATE TOLL

1.9 M W OF US 41, Lake, IL

Built 2007 ADT: 156,800

CAN PAC RR

Over: WASHINGTON ST

0.75 W OF .US41, Lake, IL

Built 1969 ADT: 17,300

WISCONSIN CENTRAL

Over: WASHINGTON STREET

.24 MI W OF LAKE AVE, Lake, IL

Built 2017 ADT: 15,900

PEDESTRIAN BRIDGE

Over: LEWIS AVE

1 MI S. OF ILL 173, Lake, IL

Built 1982 ADT: 15,000

PULASKI DR 14TH ST

Over: US RTE 41

.6 MI E ILL 43, Lake, IL

Built 1979 ADT: 28,500

Robert McClory Pat

Over: IL-173

1M.W.OF SHERIDAN RD., Lake, IL

Built 1988 ADT: 8,700

Robert McClory Pat

Over: WADSWORTH RD.

0.5M.E.OF LEWIS AVE., Lake, IL

Built 1989 ADT: 8,100

Robert McClory Pat

Over: RUSSELL ROAD

1.2M.W.0F IL-173, Lake, IL

Built 1988 ADT: 5,400

GILMER ROAD

Over: FAIRFIELD ROAD

INT GILMER&FAIRFIELD, Lake, IL

Built 2008 ADT: 10,200

WISCONSIN CENTRAL

Over: ROLLINS ROAD

0.02 MI W. OF RTE 83, Lake, IL

Built 2015 ADT: 27,800

WADSWORTH RD

Over: I-94

.6M W OF IL41, Lake, IL

Built 2006 ADT: 78,200

C&NW RR

Over: SUNSET AVE

.25 E OF DELANY RD, Lake, IL

Built 1969 ADT: 13,200

pedestrian crossin

Over: Sheridan Rd

.2M N of Greenwood, Lake, IL

PEDESTRIAN OVERPAS

Over: US ROUTE 41

S OF DEERFIELD RD, Lake, IL

Built 1964 ADT: 64,500

DESPLAINES RIV TRA

Over: US HIGHWAY 41

300FT E KILBOURN RD, Lake, IL

Built 1995 ADT: 30,500

IL 21

Over: I- 94 TRI STATE TOLL

1.2 M S OF IL 132, Lake, IL

Built 1958 ADT: 95,600

EVERETT RD

Over: INTERSTATE 94

I-94 1.3M S ILL 60, Lake, IL

Built 1958 ADT: 156,800

DUFFY LANE

Over: INTERSTATE 94

I94 .8M S ILL 22, Lake, IL

Built 1958 ADT: 165,600

ATKINSON ROAD

Over: INTERSTATE 94

I94 .8M N ILL 176, Lake, IL

Built 1958 ADT: 135,200

I-94 SB

Over: OLD SKOKIE HWY

I94 1.2M N ILL 173, Lake, IL

Built 1958 ADT: 1,300

I-94 NB

Over: OLD SKOKIE HWY

I94 1.2M N ILL 173, Lake, IL

Built 1958 ADT: 1,300

I-94 SB

Over: WASHINGTON STREET

I94 1.3M S ILL 132, Lake, IL

Built 1958 ADT: 20,100

I-94 NB

Over: WASHINGTON STREET

I94 1.3M S ILL 132, Lake, IL

Built 1958 ADT: 21,300

I-94 SB

Over: ILLINOIS 176

I94 2.3M S OF ILL 13, Lake, IL

Built 1958 ADT: 16,700

I-94 NB

Over: ILLINOIS 176

I94 2.3M S OF ILL 13, Lake, IL

Built 1958 ADT: 15,800

TRI-STATE I-294

Over: DEERFIELD RD/RMP F

1/3 MI S LAKE COOK, Lake, IL

Built 2001 ADT: 2,800

O'PLAINE ROAD

Over: INTERSTATE 94

I94 .7M SE ILL 120, Lake, IL

Built 2009 ADT: 126,200

SKOKIE VALLEY BKPA

Over: DEERPATH ROAD

0.02M E OF US 41, Lake, IL

Built 1900 ADT: 15,000

C.N.W. R.R.

Over: DEERPATH ROAD

0.01 M E OF US 41, Lake, IL

Built 1936 ADT: 15,000

SOO (WICT) AMTK.RR

Over: DEERFIELD ROAD

1.2 M E OF I-94, Lake, IL

Built 1900 ADT: 16,600

RR - ABANDONED

Over: WESTLEIGH RD

1.23 M E OF US 41, Lake, IL

Built 1941 ADT: 5,750

CMSTP&P RR

Over: OLD GRAND AVE

0.7 MI W OF US 41, Lake, IL

Built 1900 ADT: 3,100

C&NW RR

Over: ILL-22

0.1M W OF US-41, Lake, IL

Built 1982 ADT: 19,300

EJ&E RR

Over: US-45

0.3 M.N.OFILL 60, Lake, IL

Built 1984 ADT: 26,500

UP RR

Over: Woodland Rd

.01M E of Western Av, Lake, IL

Pedestrian Overpas

Over: Woodland RD

0.03 M E of Western, Lake, IL

Lake Forest Oasis

Over: I94

.9M N of IL60, Lake, IL

Built 1958 ADT: 144,700

COFFIN ROAD

Over: BUFFALO CREEK

.5 M N 53 1.0 M W 83, Lake, IL

Built 1925 Load: 6.2 t ADT: 2,500

IL 176

Over: BANGS LAKE OUTLET

.8 M E OF IL 59,US12, Lake, IL

Built 1931 Load: 13.6 t ADT: 16,200

MS-1340 MAYFLOWER

Over: RAVINE

MAYFLOWER N OF ILL R, Lake, IL

Built 1968 Load: 15.2 t ADT: 475

MS-4101 Dean Avenu

Over: RAVINE

1.5 N CO LINE, Lake, IL

Built 1928 Load: 16.8 t ADT: 900

MS-1117 ST JOHNS A

Over: RAVINE

3.3 M N LAKE COOK RD, Lake, IL

Built 1972 Load: 18.1 t ADT: 1,400

ROGER WILLIAMS

Over: RAVINE

0.2M E LK MICHIGAN, Lake, IL

Built 1915 Load: 19.4 t ADT: 3,750

IL 173

Over: SEQUOIT CREEK

0.5 M W OF IL 59, Lake, IL

Built 1931 Load: 21.4 t ADT: 13,900

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