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:

WASHINGTON ST

Over: US 41

1 M S OF IL 132, Lake, IL

Built 1961 ADT: 40,100

US 12 EB

Over: IL 176

WAUCONDA, Lake, IL

Built 1951 ADT: 18,400

US 12 WB

Over: IL 176

WAUCONDA, Lake, IL

Built 1951 ADT: 11,300

EJEE RR

Over: US 12 (RAND ROAD)

0.4 M SE OF ILL 22, Lake, IL

Built 1939 ADT: 36,400

BIKE PATH - MCCLOR

Over: US 41 (SKOKIE HWY)

0.1 M S OF IL 176, Lake, IL

Built 1936 ADT: 35,100

US 41

Over: DEERPATH RD

LAKE FOREST, Lake, IL

Built 1937 ADT: 15,000

C&NW RR

Over: US 41 (SKOKIE HY)

.1 SO OF IL-60, Lake, IL

Built 1937 ADT: 42,200

SHERIDAN RD

Over: IL 176 (SCRANTON RD)

GREAT LAKES NTC, Lake, IL

Built 1923 ADT: 5,050

IL 120

Over: US 41

GURNEE, Lake, IL

Built 1959 ADT: 28,500

IL 120

Over: RR - UP & OLD SKOKIE

GURNEE, Lake, IL

Built 1959 ADT: 275

IL 137

Over: I- 94 TRI STATE TOLL

1.0 M W OF IL 43, Lake, IL

Built 1958 ADT: 135,200

DEERFIELD RD

Over: BERKELEY AVE

HIGHLAND PARK, Lake, IL

Built 1961 ADT: 1,300

DEERFIELD RD

Over: RR - UP & OLD SKOKIE

0.3 M W OF US 41, Lake, IL

Built 1962 ADT: 1,725

DEERFIELD RD

Over: US 41

DEERFIELD & US 41, Lake, IL

Built 1960 ADT: 64,500

IL 43 NB

Over: US 41 SB

0.25 N OF IL 120, Lake, IL

Built 1957 ADT: 40,100

EJEE RR

Over: US 41 (SKOKIE HY)

0.6 M N OF ILL 176, Lake, IL

Built 1936 ADT: 38,000

CNW RR

Over: ILL 176 (SCRANTON A)

0.31 M E OF ILL 131, Lake, IL

Built 1942 ADT: 9,350

CNW RR

Over: ILL 176 (SCRANTON A)

0.32 MI E OF ILL 131, Lake, IL

Built 1942 ADT: 9,350

I-94 NB

Over: US 41 SB (SKOKIE HY)

US 41 SB 1M N IL-173, Lake, IL

Built 1958 ADT: 24,500

IL 137

Over: IL 137 WB OFF RAMP

1.8 M W OF IL 21, Lake, IL

Built 1966 ADT: 5,900

SOO (WICT) AMTK. R

Over: US 41 (SKOKIE HY)

US 41 1 M SE ILL 21, Lake, IL

Built 1936 ADT: 30,500

SOO (WICT) AMTK.RR

Over: IL-60

0.5 M W OF ILL 43, Lake, IL

Built 1940 ADT: 23,200

CM & STP RR

Over: US 45

.03M S OF ILL 137, Lake, IL

Built 1939 ADT: 25,900

W.C.RR

Over: US 45

0.4 M N OF ILL 176, Lake, IL

Built 1939 ADT: 18,300

SOO (WICT) AMTK. R

Over: ILL 132 (GRAND AVE)

0.6 M W OF US 41, Lake, IL

Built 1961 ADT: 21,900

EJEE RR

Over: SHERIDAN ROAD

1.3 M N OF ILL 137, Lake, IL

Built 1900 ADT: 8,050

CNW RR

Over: WESTLEIGH ROAD

1.2 M E OF US 41, Lake, IL

Built 1942 ADT: 5,750

IL 43 (TELEGRAPH)

Over: IL 120

1.4 M E OF I-94, Lake, IL

Built 1973 ADT: 19,300

SKOKIE VALLEY BKPA

Over: US 41 (SKOKIE HWY)

.2 SO OF IL-60, Lake, IL

Built 1936 ADT: 42,200

MATHON DR (GRAND A

Over: IL 137(AMSTUTZ EXPY)

0.2M E OF SHERIDAN R, Lake, IL

Built 1964 ADT: 5,750

IL 120 WB

Over: GREENLEAF AVE

1.1 M E OF I-94, Lake, IL

Built 1977 ADT: 10,600

IL 120 EB

Over: GREENLEAF AVE

1.1 M E OF I-94, Lake, IL

Built 1977 ADT: 10,600

RR - METRA

Over: PETERSON AVE

0.55 M E OF US 45, Lake, IL

Built 1967 ADT: 6,800

IL 176

Over: US 41

LAKE BLUFF, Lake, IL

Built 1980 ADT: 35,100

BELVIDERE ST

Over: C&NW RR& L.F.F-WAY.

JUST E O SHERIDAN RD, Lake, IL

Built 1966 ADT: 13,900

C.& N.W.RR

Over: IL-137 BUCKLEY RD.

0.9M.E.OF IL-131, Lake, IL

Built 1988 ADT: 5,200

SHERIDAN RD

Over: BUCKLEY ROAD

0.05 E OF AMSTUTZ, Lake, IL

Built 1989 ADT: 5,200

SHERIDAN RD

Over: 24TH ST

0.5 M N OF IL 137, Lake, IL

Built 1989 ADT: 525

IL 137 (LK FRT FRW

Over: 24TH ST

0.53 M N OF IL 137, Lake, IL

Built 1989 ADT: 525

WASHINGTON ST

Over: IL 137 (LK FRT FRWY)

0.05 M E OF SHERIDAN, Lake, IL

Built 1988 ADT: 5,750

CLAVEY RD

Over: US 41 EDENS

1.0 M N OF CO LINE, Lake, IL

Built 1990 ADT: 61,600

IL 137

Over: US 45

1.4 M S OF IL 120, Lake, IL

Built 1993 ADT: 25,900

IL 59

Over: RR - METRA & ROLLINS

IL 59 & ROLLINS RD, Lake, IL

Built 1995 ADT: 8,850

IL 21

Over: IL 120 & STREAM

1 M W OF I-94, Lake, IL

Built 2003 ADT: 30,700

DEERFIELD RD

Over: I-94(TRI STATE TOLL)

2.4 M E US-45, Lake, IL

Built 1998 ADT: 171,100

RR - EJ&E

Over: IL 22

.7 MI. E. US 12, Lake, IL

Built 2006 ADT: 15,000

IL 59

Over: US 12

0.5 M S OF IL 176, Lake, IL

Built 2001 ADT: 33,600

IL 22

Over: I- 94 TRI STATE TOLL

3.0 M S OF IL 60, Lake, IL

Built 2009 ADT: 165,600

US 41

Over: IL 132 (GRAND AVE)

US 41 & ILL 132 INT., Lake, IL

Built 2009 ADT: 29,600

IL 132 (GRAND AVE)

Over: I- 94 TRI STATE TOLL

3.0 M N IL 120, Lake, IL

Built 2009 ADT: 102,300

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