Cook County, IL

2,185 public highway bridges

Cook County Bridge Snapshot

Cook County, Illinois contains 2,185 public highway bridges in the FHWA National Bridge Inventory. Roughly 13.1% are rated “Good,” 22.7% “Fair,” 6.6% “Poor,” and 6.6% 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.

2,185

Total Bridges

13.1%

Good

6.6%

Poor

6.6%

Structurally Deficient

Condition Distribution

Good

13.1% (286)

Fair

22.7% (496)

Poor

6.6% (144)

SD

6.6% (144)

All Bridges (2,185)

Sort:

IL 171 NB

Over: DES PLAINES RIVER

0.2 M NW I-55, Cook, IL

Built 1964 Load: 45.4 t ADT: 40,100

I- 90,94 REV JFK

Over: RR - CTA TUNNEL

0.1 M N KEELER, Cook, IL

Built 1959 Load: 45.4 t ADT: 104,800

I-294/I-90E 2 I-29

Over: Willow Creek

0.20 Mi S I-90, Cook, IL

Built 1959 Load: 45.4 t ADT: 181,200

MARGARET(THORN-LAN

Over: THORN CREEK

1.5 M W IL 394, Cook, IL

Built 1969 Load: 45.7 t ADT: 10,250

IL 171 SB FIRST AV

Over: DES PLAINES RIVER

0.2 M W I-55, Cook, IL

Built 1964 Load: 46.0 t ADT: 40,100

25TH AVE

Over: RR - IHB

0.3 M N IL 64, Cook, IL

Built 1965 Load: 46.0 t ADT: 15,900

CLARK ST

Over: Parking Area

330 N.& 100 W., Cook, IL

Built 1982 Load: 46.0 t ADT: 6,800

I- 94 SB EDENS

Over: RR - UP ?

1.3 M N IL 58, Cook, IL

Built 1950 Load: 46.3 t ADT: 64,250

I- 94 NB EDENS

Over: RR - UP ?

1.3 M N IL 58, Cook, IL

Built 1950 Load: 46.3 t ADT: 64,250

127TH ST BURR OAK

Over: RR - METRA

0.5 M W I-57, Cook, IL

Built 1957 Load: 46.7 t ADT: 24,200

US 12,20 (95TH ST)

Over: MELVINA DITCH

0.7 M E IL 43, Cook, IL

Built 1969 Load: 47.0 t ADT: 28,500

CHURCH ST

Over: N SHORE CHANNEL

EVANSTON P6, Cook, IL

Built 1909 Load: 47.0 t ADT: 7,600

IL 50 (CICERO AVE

Over: N BR CHICAGO RIVER

0.4 M S US 14, Cook, IL

Built 2007 Load: 47.3 t ADT: 13,800

I-90 WB Jayne Adam

Over: U.P. RR

2.1 Mi E. Ill Rte 83, Cook, IL

Built 2015 Load: 47.3 t ADT: 160,700

US 14 (MINER ST)

Over: DES PLAINES RIVER

0.7 M W I-294, Cook, IL

Built 1925 Load: 47.6 t ADT: 16,100

GREEN BAY RD

Over: N SHORE CHANNEL

0.2 M N SIMPSON, Cook, IL

Built 1936 Load: 47.6 t ADT: 10,150

US 30 (LINCOLN HWY

Over: THIRD CREEK

2 M W IL 394, Cook, IL

Built 1982 Load: 47.6 t ADT: 18,200

US 30 (LINCOLN HWY

Over: BUTTERFIELD CREEK

0.6 M E OF IL 50, Cook, IL

Built 1983 Load: 47.6 t ADT: 37,300

US 30 (LINCOLN HWY

Over: BUTTERFIELD CREEK

0.1 M W CRAWFORD AVE, Cook, IL

Built 1985 Load: 47.6 t ADT: 37,300

I-294 NB

Over: C&NW RR

0.6 M N ILL 58 P11, Cook, IL

Built 1958 Load: 47.6 t ADT: 71,350

I-294 SB

Over: C&NW RR

0.6 M N ILL 58 P11, Cook, IL

Built 1958 Load: 47.6 t ADT: 71,350

IL 1 (HALSTED ST

Over: BUTTERFIELD CREEK

2.5 M N US 30, Cook, IL

Built 1974 Load: 48.0 t ADT: 17,900

IL 72 (LEE ST)

Over: WILLOW CREEK

0.2 M S I-90 NW TOLL, Cook, IL

Built 1940 Load: 48.3 t ADT: 29,700

STATE ST.

Over: THIRD CREEK

0.7M.S.OF US-30, Cook, IL

Built 1987 Load: 48.3 t ADT: 3,450

MONTROSE DRIVE

Over: PEDESTRIAN UNDERPASS

4400N 500W, Cook, IL

Built 1936 Load: 48.3 t ADT: 6,250

IL 59 & HORSE PAT

Over: POPLAR CREEK

.01 M S IL 58, Cook, IL

Built 1977 Load: 48.9 t ADT: 37,200

IL 171 NB TO I-55

Over: SAN & SHIP CANAL

1 M N ARCHER AVE, Cook, IL

Built 1981 Load: 49.2 t ADT: 14,500

I-90 SKYWAY

Over: GROUND SE COMM AVE

0.06 M SE COMM AV, Cook, IL

Built 1958 Load: 49.2 t ADT: 28,700

IL 50 (CICERO AVE

Over: CREEK N OF 151ST ST

.5 M S IL 83 (147TH), Cook, IL

Built 1971 Load: 49.6 t ADT: 25,700

IL 43 (WAUKEGAN)

Over: RR - UP

1.4 S IL 68, Cook, IL

Built 1993 Load: 49.6 t ADT: 21,000

I- 94 BISHOP FORD

Over: SERVICE DRIVE

6.7 M SE I-57, Cook, IL

Built 1992 Load: 49.6 t ADT: 166,900

I-90WB TO NB STONY

Over: GROUND

0.22 M S 79TH P7C, Cook, IL

Built 1958 Load: 49.9 t ADT: 4,000

IL 53E FRONTAGE RD

Over: SALT CREEK

NORTH OF IL-62, Cook, IL

Built 1962 Load: 50.5 t ADT: 2,500

ST CHARLES RD

Over: ADDISON CREEK

0.7 M E US 45, Cook, IL

Built 2002 Load: 50.5 t ADT: 10,400

I- 55 EB RMP RYAN

Over: DRY LAND

AT I-94, Cook, IL

Built 1964 Load: 50.9 t ADT: 23,300

31ST ST

Over: SALT CREEK

1.7 M E US 45, Cook, IL

Built 2001 Load: 50.9 t ADT: 14,300

RANDOLPH ST

Over: UNION STA TRKS

150N 430W TO 500W, Cook, IL

Built 1985 Load: 50.9 t ADT: 12,200

TOWER RD

Over: RR - UP

1.9 M E I-94, Cook, IL

Built 1941 Load: 51.2 t ADT: 4,950

I- 55 WB ELEVATED

Over: S BR CHICAGO RIVER

1.1 M SW I-94, Cook, IL

Built 1963 Load: 51.2 t ADT: 75,400

DEMPSTER ST

Over: N. SHORE CHANNEL

0.2 E KIMBALL, Cook, IL

Built 2003 Load: 51.2 t ADT: 21,300

LEMOYNE ST

Over: ADDISON CR

0.14 M S NORTH AVE, Cook, IL

Built 1960 Load: 51.2 t ADT: 600

I-90WB TO NB STONY

Over: GROUND

0.06 M N 79TH P7C, Cook, IL

Built 1958 Load: 51.5 t ADT: 4,000

I-294 SB

Over: C&NW RR

0.4 M S US 20 P20, Cook, IL

Built 1958 Load: 51.8 t ADT: 75,250

IL 171 SB FIRST AV

Over: RR - CN

0.3 M SE I-55, Cook, IL

Built 1963 Load: 52.2 t ADT: 39,600

STONY ISL SB TO E9

Over: GROUND

0.14 M N 79TH P7C, Cook, IL

Built 1958 Load: 52.8 t ADT: 5,000

I- 94 NB BISHOP FO

Over: RR - NS & WOODLAWN A

1.7 M SE I-57, Cook, IL

Built 1960 Load: 53.1 t ADT: 66,250

IL 43 NB (HARLEM)

Over: RR - CN

0.1 M S I-55, Cook, IL

Built 1931 Load: 53.1 t ADT: 39,000

I-290 EB IKE-IL 11

Over: RR - CTA

0.2 M E CENTRAL AV, Cook, IL

Built 1954 Load: 53.1 t ADT: 89,150

WOLF RD

Over: ADDISON CREEK

0.2 M N IL 64, Cook, IL

Built 1932 Load: 53.1 t ADT: 11,800

US 30 (LINCOLN HWY

Over: BUTTERFIELD CREEK

0.2 E CRAWFORD AVE, Cook, IL

Built 1984 Load: 53.1 t ADT: 34,100

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