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:

I- 55 WB

Over: JOLIET RD EB

2.1 M SW US 45, Cook, IL

Built 1962 ADT: 11,800

I- 55 STEVENSON

Over: WOLF RD & FLAG CR

1.5 M W US 45, Cook, IL

Built 1963 ADT: 9,850

I- 55 EB STEVENSON

Over: SANTA FE DR

0.4 M E US 45, Cook, IL

Built 1963 ADT: 5,800

I- 55 WB STEVENSON

Over: SANTA FE DR

0.4 M E US 45, Cook, IL

Built 1963 ADT: 5,800

I- 55 EB STEVENSON

Over: SAN & SHIP CANAL

0.9 M SW ILL 43, Cook, IL

Built 1964 ADT: 200

I- 55 WB STEVENSON

Over: SAN & SHIP CANAL

0.9 M SW ILL 43, Cook, IL

Built 1964 ADT: 200

I- 55 EB STEVENSON

Over: IL 50 (CICERO AVE)

5.7 M SW I94, Cook, IL

Built 1963 ADT: 50,400

I- 55 WB STEVENSON

Over: IL 50 (CICERO AVE)

5.7 M SW I94, Cook, IL

Built 1963 ADT: 50,400

RR - BNSF WEST BR

Over: I- 55 STEVENSON

1.5 M NE ILL 50, Cook, IL

Built 1963 ADT: 173,600

RR - BNSF EAST BR

Over: I- 55 STEVENSON

1.55 M NE ILL 50, Cook, IL

Built 1963 ADT: 173,600

I- 55 EB STEVENSON

Over: KEDZIE AVE

2 M NE ILL 50, Cook, IL

Built 1963 ADT: 22,000

I- 55 WB STEVENSON

Over: KEDZIE AVE

2 M NE ILL 50, Cook, IL

Built 1963 ADT: 22,000

I- 55 EB STEVENSON

Over: CALIFORNIA AVE

3 M SW DAN RYAN, Cook, IL

Built 1963 ADT: 15,900

I- 55 WB STEVENSON

Over: CALIFORNIA AVE

3 M SW DAN RYAN, Cook, IL

Built 1963 ADT: 15,900

I- 55 WB STEVENSON

Over: WESTERN AVE VIADUCT

2.5 M SW DAN RYAN, Cook, IL

Built 1963 ADT: 24,800

I- 55 WB STEVENSON

Over: LOCK ST

1.1 M SW I94, Cook, IL

Built 1963 ADT: 10

I- 55 EB STEVENSON

Over: LOCK ST

1.1 M SW I94, Cook, IL

Built 1963 ADT: 10

I- 55 EB STEVENSON

Over: LOOMIS & FULLER STS

0.9 M SW I94, Cook, IL

Built 1964 ADT: 4,800

I- 55 EB STEVENSON

Over: THROOP ST

0.7 M SW I94, Cook, IL

Built 1963 ADT: 2,350

I- 55 WB STEVENSON

Over: THROOP ST

0.7 M SW I94, Cook, IL

Built 1963 ADT: 2,350

I- 55 EB STEVENSON

Over: HALSTED ST

0.2 M SW I94, Cook, IL

Built 1964 ADT: 12,100

I- 55 WB STEVENSON

Over: HALSTED ST

0.2 M SW I94, Cook, IL

Built 1964 ADT: 12,100

IL 171 WB (ARCHER)

Over: US 45 SB RMP 2 I294

0.3 M E US 45, Cook, IL

Built 2021 ADT: 17,300

IL 171 EB (ARCHER)

Over: 79TH ST WB

0.8 M E US 45, Cook, IL

Built 2021 ADT: 19,500

I- 55 S RMP I-90,9

Over: I- 55 STEVENSON

0.6 M E I94, Cook, IL

Built 1965 ADT: 86,900

GM&O RR

Over: I-55 RP TO ASHLAND

0.14 M W ASHLD P5C, Cook, IL

Built 1964 ADT: 16,900

I- 57 SB

Over: I- 80 EB

3.1 M S US 6, Cook, IL

Built 1964 ADT: 83,700

I- 57 NB

Over: I- 80 EB

3.1 M S US 6, Cook, IL

Built 1964 ADT: 83,700

I- 57 NB

Over: DIXIE HWY

0.2 M NE IL 83, Cook, IL

Built 1967 ADT: 6,700

I- 57 SB

Over: DIXIE HWY

0.2 M NE IL 83, Cook, IL

Built 1967 ADT: 6,700

I- 57 NB

Over: L.CAL.RIV.& THN.RD.

1.5 M NE ILL 83, Cook, IL

Built 1966 ADT: 5,250

I- 57 SB

Over: L.CAL.RIV.& THN.RD.

1.5 M NE ILL 83, Cook, IL

Built 1966 ADT: 5,250

I- 57 SB

Over: LITTLE CAL RIV,BROAD

0.75 M S 127TH, Cook, IL

Built 1967 ADT: 4,300

I- 57 NB

Over: LITTLE CAL RIV,BROAD

0.75 M S 127TH, Cook, IL

Built 1967 ADT: 4,300

I- 57 SB

Over: VERMONT ST

2.5 NE ILL 83, Cook, IL

Built 1966 ADT: 12,100

I- 57 NB

Over: VERMONT ST

2.5 NE ILL 83, Cook, IL

Built 1966 ADT: 12,100

RR - METRA

Over: I- 57

3.7 M SW ILL 1, Cook, IL

Built 1966 ADT: 124,100

BIKE PATH (CLSD.RR

Over: I- 57

.1 M N OF 107TH ST, Cook, IL

Built 1966 ADT: 140,600

RR - UP

Over: I- 57

0.5 M E IL 1, Cook, IL

Built 1962 ADT: 139,400

I- 57 NB

Over: I- 94 SB BF & CTA RR

1 M E IL 1, Cook, IL

Built 1960 ADT: 179,500

I- 80 EB

Over: IL 50 (CICERO AVE)

0.5 M E I-57, Cook, IL

Built 1966 ADT: 17,100

I- 80 WB

Over: IL 50 (CICERO AVE)

0.5 M E I-57, Cook, IL

Built 1966 ADT: 17,100

I- 80 WB

Over: 175TH ST

0.7 M E I-57, Cook, IL

Built 1966 ADT: 7,500

I- 80 EB

Over: 175TH ST

0.7 M E I-57, Cook, IL

Built 1964 ADT: 7,500

I- 80 EB

Over: KEDZIE AVE

3.0 M E OF I-57, Cook, IL

Built 1966 ADT: 20,700

I- 80 WB

Over: KEDZIE AVE

3.0 M E OF I-57, Cook, IL

Built 1966 ADT: 20,700

I-290 WB

Over: IL 56 (BUTTERFIELD)

1.6 M W US 45, Cook, IL

Built 1959 ADT: 13,800

I-290 EB

Over: IL 56 (BUTTERFIELD)

1.6 M W US 45, Cook, IL

Built 1959 ADT: 13,800

I-290 EB

Over: I- 88 EW TOLL-IL 110 CKC

1.5 M W US 45, Cook, IL

Built 1953 ADT: 102,400

I-290 IKE-IL 110 C

Over: WOLF RD

1 M W US 45, Cook, IL

Built 1952 ADT: 12,500

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