State profile · Near median Poor share

Illinois bridge safety

Condition ratings, load ratings, and Poor-condition data for every public highway bridge in Illinois, based on the FHWA National Bridge Inventory.

27,743
Public bridges
41.2%
Good condition
7.9%
Poor condition

Data updated May 2026

Total Bridges

27,743

Public highway bridges in Illinois

Good Condition

41.2%

11,426 bridges rated 7-9

-8.8pp vs 50% benchmark

Poor Condition

7.9%

2,186 bridges whose lowest applicable component is rated 0-4

0.9pp vs national avg 7.0%

Illinois vs national bridge condition

Illinois - Good condition share 41.2%
National avg

Share of bridges rated 7-9 on the FHWA 0-9 scale (deck, superstructure, substructure all good).

Illinois - Poor-condition share 26.3%
National avg

Lower is better. Bar maxes at 30% (worst-state ceiling). National average sits at 7.0%.

Condition Distribution

Illinois48.2%42.6%9.2%GoodFairPoor
Bridge inventory deck-condition mix - Illinois (FHWA NBI)

Counties (102)

Adams 325 Alexander 96 Bond 165 Boone 111 Brown 71 Bureau 382 Calhoun 81 Carroll 185 Cass 77 Champaign 743 Christian 323 Clark 232 Clay 171 Clinton 187 Coles 308 Cook 2185 Crawford 196 Cumberland 169 De Witt 197 DeKalb 264 Douglas 234 DuPage 380 Edgar 278 Edwards 79 Effingham 260 Fayette 356 Ford 300 Franklin 323 Fulton 210 Gallatin 82 Greene 166 Grundy 269 Hamilton 164 Hancock 291 Hardin 58 Henderson 144 Henry 331 Iroquois 565 Jackson 235 Jasper 180 Jefferson 270 Jersey 111 Jo Daviess 198 Johnson 120 Kane 354 Kankakee 352 Kendall 133 Knox 321 LaSalle 529 Lake 286 Lawrence 183 Lee 372 Livingston 578 Logan 296 Macon 368 Macoupin 248 Madison 543 Marion 301 Marshall 153 Mason 85 Massac 138 McDonough 210 McHenry 229 McLean 624 Menard 90 Mercer 162 Monroe 130 Montgomery 261 Morgan 241 Moultrie 171 Ogle 377 Peoria 365 Perry 139 Piatt 249 Pike 338 Pope 86 Pulaski 106 Putnam 50 Randolph 155 Richland 147 Rock Island 256 Saline 176 Sangamon 480 Schuyler 121 Scott 96 Shelby 330 St. Clair 502 Stark 89 Stephenson 332 Tazewell 361 Union 192 Vermilion 515 Wabash 88 Warren 202 Washington 232 Wayne 264 White 210 Whiteside 280 Will 674 Williamson 204 Winnebago 475 Woodford 222

Illinois vs nearby ranks

Adjacent states by Poor-condition share (lower share = better)

States are ranked by the share of bridges whose lowest applicable component rating is 4 or below. This describes recorded condition; it does not measure funding effectiveness or live crossing safety. States here sit immediately above and below Illinois on the same metric.

RI

Rhode Island

7.69% top marginal rate
Structure
Progressive
Burden @ $100K
$78

NE

Nebraska

7.73% top marginal rate
Structure
Progressive
Burden @ $100K
$15,571
Selected

IL

Illinois

7.88% top marginal rate
Structure
Progressive
Burden @ $100K
$27,743

MA

Massachusetts

7.96% top marginal rate
Structure
Progressive
Burden @ $100K
$5,314

MO

Missouri

8.53% top marginal rate
Structure
Progressive
Burden @ $100K
$24,654

Bridges Needing Most Attention in Illinois

Six lowest-condition bridges in Illinois, ranked by the portal's composite display score. Inspection intervals are risk-based under current NBIS rules.

FAS 1599

Poor

Over: DRAINAGE CANAL

2.2 MI E MEYER, Adams, IL

Built 1980 Load: 0.6 t ADT: 200

CH 15

Poor

Over: E FK MAZONRIVER

0.05 MI W CH 16, Grundy, IL

Built 1977 Load: 1.0 t ADT: 1,400

MOOSE RD - TR 240

Poor

Over: WILSON CREEK

NE-35-T3NR2E, Fulton, IL

Built 1935 Load: 1.3 t ADT: 10

TR 10-B

Poor

Over: KING CREEK

W EDGE OF MINERAL, Bureau, IL

Built 1899 Load: 1.6 t ADT: 10

TR-6

Poor

Over: DRAINAGE DITCH

3.5 MI NE DIETERICH, Effingham, IL

Built 1909 Load: 1.6 t ADT: 25

TR208K(TWIN BRIDGE

Poor

Over: BIG CREEK

NE EDGE MT ZION, Macon, IL

Built 1967 Load: 1.9 t ADT: 375

All Bridges in Illinois

I- 55 EB STEVENSON

Unknown

Over: LOOMIS & FULLER STS

0.9 M SW I94, Cook, IL

Built 1964 ADT: 4,800

I- 55 EB STEVENSON

Unknown

Over: THROOP ST

0.7 M SW I94, Cook, IL

Built 1963 ADT: 2,350

I- 55 WB STEVENSON

Unknown

Over: THROOP ST

0.7 M SW I94, Cook, IL

Built 1963 ADT: 2,350

I- 55 EB STEVENSON

Unknown

Over: HALSTED ST

0.2 M SW I94, Cook, IL

Built 1964 ADT: 12,100

I- 55 WB STEVENSON

Unknown

Over: HALSTED ST

0.2 M SW I94, Cook, IL

Built 1964 ADT: 12,100

IL 171 WB (ARCHER)

Unknown

Over: US 45 SB RMP 2 I294

0.3 M E US 45, Cook, IL

Built 2021 ADT: 17,300

IL 171 EB (ARCHER)

Unknown

Over: 79TH ST WB

0.8 M E US 45, Cook, IL

Built 2021 ADT: 19,500

I- 55 S RMP I-90,9

Unknown

Over: I- 55 STEVENSON

0.6 M E I94, Cook, IL

Built 1965 ADT: 86,900

GM&O RR

Unknown

Over: I-55 RP TO ASHLAND

0.14 M W ASHLD P5C, Cook, IL

Built 1964 ADT: 16,900

I- 57 SB

Unknown

Over: I- 80 EB

3.1 M S US 6, Cook, IL

Built 1964 ADT: 83,700

I- 57 NB

Unknown

Over: I- 80 EB

3.1 M S US 6, Cook, IL

Built 1964 ADT: 83,700

I- 57 NB

Unknown

Over: DIXIE HWY

0.2 M NE IL 83, Cook, IL

Built 1967 ADT: 6,700

I- 57 SB

Unknown

Over: DIXIE HWY

0.2 M NE IL 83, Cook, IL

Built 1967 ADT: 6,700

I- 57 NB

Unknown

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

1.5 M NE ILL 83, Cook, IL

Built 1966 ADT: 5,250

I- 57 SB

Unknown

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

1.5 M NE ILL 83, Cook, IL

Built 1966 ADT: 5,250

I- 57 SB

Unknown

Over: LITTLE CAL RIV,BROAD

0.75 M S 127TH, Cook, IL

Built 1967 ADT: 4,300

I- 57 NB

Unknown

Over: LITTLE CAL RIV,BROAD

0.75 M S 127TH, Cook, IL

Built 1967 ADT: 4,300

I- 57 SB

Unknown

Over: VERMONT ST

2.5 NE ILL 83, Cook, IL

Built 1966 ADT: 12,100

I- 57 NB

Unknown

Over: VERMONT ST

2.5 NE ILL 83, Cook, IL

Built 1966 ADT: 12,100

RR - METRA

Unknown

Over: I- 57

3.7 M SW ILL 1, Cook, IL

Built 1966 ADT: 124,100

BIKE PATH (CLSD.RR

Unknown

Over: I- 57

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

Built 1966 ADT: 140,600

RR - UP

Unknown

Over: I- 57

0.5 M E IL 1, Cook, IL

Built 1962 ADT: 139,400

I- 57 NB

Unknown

Over: I- 94 SB BF & CTA RR

1 M E IL 1, Cook, IL

Built 1960 ADT: 179,500

I- 80 EB

Unknown

Over: IL 50 (CICERO AVE)

0.5 M E I-57, Cook, IL

Built 1966 ADT: 17,100

I- 80 WB

Unknown

Over: IL 50 (CICERO AVE)

0.5 M E I-57, Cook, IL

Built 1966 ADT: 17,100

I- 80 WB

Unknown

Over: 175TH ST

0.7 M E I-57, Cook, IL

Built 1966 ADT: 7,500

I- 80 EB

Unknown

Over: 175TH ST

0.7 M E I-57, Cook, IL

Built 1964 ADT: 7,500

I- 80 EB

Unknown

Over: KEDZIE AVE

3.0 M E OF I-57, Cook, IL

Built 1966 ADT: 20,700

I- 80 WB

Unknown

Over: KEDZIE AVE

3.0 M E OF I-57, Cook, IL

Built 1966 ADT: 20,700

I-290 WB

Unknown

Over: IL 56 (BUTTERFIELD)

1.6 M W US 45, Cook, IL

Built 1959 ADT: 13,800

I-290 EB

Unknown

Over: IL 56 (BUTTERFIELD)

1.6 M W US 45, Cook, IL

Built 1959 ADT: 13,800

I-290 EB

Unknown

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

Unknown

Over: WOLF RD

1 M W US 45, Cook, IL

Built 1952 ADT: 12,500

IHB RR

Unknown

Over: I-290 IKE

0.8 M E US 45 P20, Cook, IL

Built 1952 ADT: 160,200

CTA

Unknown

Over: I-290 IKE

0.5 M W ILL 43 P20, Cook, IL

Built 1959 ADT: 163,500

B&O RR

Unknown

Over: I-290 IKE

0.5 M W ILL 43 P20, Cook, IL

Built 1959 ADT: 163,500

I-290 EB IKE-IL 11

Unknown

Over: CENTRAL AVE

1 M W IL 50, Cook, IL

Built 1957 ADT: 15,500

I-290 WB IKE-IL 11

Unknown

Over: CENTRAL AVE

1 M W IL 50, Cook, IL

Built 1957 ADT: 15,500

BRC RR

Unknown

Over: I-290 IKE & CTA

0.25 M E ILL 50 P4C, Cook, IL

Built 1955 ADT: 181,400

RR - NS & UP

Unknown

Over: I-290 - IL 110 & CTA

0.25 MI W OF WESTERN, Cook, IL

Built 1952 ADT: 175,100

PAULINA ST

Unknown

Over: I-290 - IL 110 & CTA

1.1 M W IL 1, Cook, IL

Built 1954 ADT: 172,800

I- 94 EDENS

Unknown

Over: GOLF RD

GOLF RD, Cook, IL

Built 1949 ADT: 23,000

I- 94 EDENS

Unknown

Over: FOREST GLEN AVE

0.7 M N FOSTER, Cook, IL

Built 1949 ADT: 3,300

I- 94 EDENS

Unknown

Over: IL 50 (CICERO AVE)

0.5 M N FOSTER, Cook, IL

Built 1948 ADT: 13,800

RR - UP

Unknown

Over: I- 94 EDENS

0.4 M N I-90, Cook, IL

Built 1958 ADT: 142,300

I- 94 SB EDENS

Unknown

Over: I- 90 WB JFK & CTA

AT MONTROSE, Cook, IL

Built 1957 ADT: 138,300

I- 90,94 NWB JFK

Unknown

Over: KOSTNER AVE

0.5 M SE IL 50, Cook, IL

Built 1957 ADT: 2,750

I- 90,94 SEB JFK

Unknown

Over: KOSTNER AVE

0.5 M SE IL 50, Cook, IL

Built 1957 ADT: 2,750

I- 90,94 NWB JFK

Unknown

Over: KEELER AVE

0.9 M SE IL 50, Cook, IL

Built 1957 ADT: 13,650

I- 90,94 SEB &RV J

Unknown

Over: KEELER AVE

0.1 M NW IL 19, Cook, IL

Built 1957 ADT: 13,650

Showing 301-350 of 27,743 bridges

Related

All states → | National rankings → | Understanding conditions → | Retired SD term explained →
Data sourced from the FHWA National Bridge Inventory (NBI), latest released cycle. See our methodology for details. Retrieved and formatted by PlainBridges.

Disclaimer: This information is provided for informational purposes only and does not constitute professional advice. Data is sourced from the FHWA National Bridge Inventory (NBI). Poor condition is an inspection-record category, not a closure or unsafe-to-cross designation. Consult the bridge owner for current status.

Understanding Bridge Conditions

How FHWA rates bridge condition on a 0-9 scale.

Check Your Daily Bridges

How to look up bridge condition data for bridges on your route.

Read our methodology — how this data is sourced, computed, and verified.

Every figure on PlainBridge is rendered directly from federal source data, no number is typed in by an editor. This page draws directly on federal source data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.