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

IL 56

Unknown

Over: IL 38

0.1 M E IL 83, DuPage, IL

Built 1965 ADT: 48,900

IL 83

Unknown

Over: IL 38

2 M W COOK CO LINE, DuPage, IL

Built 1972 ADT: 48,900

IL 83 SB

Unknown

Over: IL 56

0.1 M S IL 38, DuPage, IL

Built 1972 ADT: 22,500

IL 83 NB

Unknown

Over: IL 56

IL 83 OVER IL 56, DuPage, IL

Built 1972 ADT: 22,500

US 20

Unknown

Over: IL 83

1.25 M N OF IL 64, DuPage, IL

Built 1969 ADT: 52,800

55TH ST

Unknown

Over: IL 83

1.5 M S US 34, DuPage, IL

Built 1967 ADT: 53,900

EJ&E RR

Unknown

Over: ILL 56

05 MI W OF RTE 59, DuPage, IL

Built 1941 ADT: 22,600

SOO RR

Unknown

Over: ILL 19

1M.W.OF MEDINAH RD., DuPage, IL

Built 1900 ADT: 15,500

C&NW RR

Unknown

Over: ILL RTE 53

0.27 S ST CHARLES RD, DuPage, IL

Built 1900 ADT: 20,800

I-355 NB

Unknown

Over: ROHLWING RD

0.5 M N IL53 & US 20, DuPage, IL

Built 1970 ADT: 17,300

I-355 SB

Unknown

Over: ROHLWING RD

0.5 M N IL 53 & US20, DuPage, IL

Built 1970 ADT: 17,300

31ST ST

Unknown

Over: IL 83

1 M S I-88 EW TOLL, DuPage, IL

Built 1974 ADT: 61,300

IL 83

Unknown

Over: IL 19

2 M S COOK CO LINE, DuPage, IL

Built 1972 ADT: 23,000

EMROY AVE

Unknown

Over: I-290

0.5 M N OF IL 64, DuPage, IL

Built 1985 ADT: 130,900

HIGHLAND AVE

Unknown

Over: IL 56 (BUTTERFIELD)

0.48 M N OF I-88, DuPage, IL

Built 1987 ADT: 13,300

IL 83

Unknown

Over: RR - BNSF, BRLGTN RD

0.7 M S OF US 34, DuPage, IL

Built 1986 ADT: 850

PRAIRIE PATH

Unknown

Over: IL 83

0.3 M S STCHAS RD, DuPage, IL

Built 1989 ADT: 61,200

IL 83

Unknown

Over: US 34

1.5 M W OF I-294, DuPage, IL

Built 1986 ADT: 23,000

IL 38

Unknown

Over: IL 53

IL 38 & IL 53, DuPage, IL

Built 1989 ADT: 16,800

PRAIRIE PATH

Unknown

Over: IL59

.5 MI NO OF IL-64, DuPage, IL

Built 1993 ADT: 27,900

I-88 EB

Unknown

Over: WINFIELD RD

.25MI N.OF DIEHL RD, DuPage, IL

Built 1992 ADT: 16,900

I-88 WB

Unknown

Over: WINFIELD ROAD

.25MI N.OF DIEHL RD, DuPage, IL

Built 1992 ADT: 16,900

IL 390 EB EOH

Unknown

Over: MEACHAM/MEDINAH RDS

EAST OF ROSELLE RD, DuPage, IL

Built 1992 ADT: 16,500

US 20

Unknown

Over: IL 390 ELGIN-OHARE

EAST OF BARRINGTON R, DuPage, IL

Built 1992 ADT: 24,300

CHICAGO AVE

Unknown

Over: IL 83

0.5 M S OF US 34, DuPage, IL

Built 1991 ADT: 66,500

IL 56

Unknown

Over: I-355

1 M E OF IL 53, DuPage, IL

Built 1988 ADT: 79,200

IL 64

Unknown

Over: I-355

0.2 M W OF IL 53, DuPage, IL

Built 1988 ADT: 119,400

IL 390 WB EOH

Unknown

Over: MEACHAM/MEDINAH RD

EAST OF ROSELLE RD, DuPage, IL

Built 1992 ADT: 16,500

RR - CP

Unknown

Over: IL 19

JUST E OF YORK RD, DuPage, IL

Built 2014 ADT: 26,500

PED OVERPASS

Unknown

Over: US 20 (LAKE ST)

.55M W of Roselle Rd, DuPage, IL

Built 2012 ADT: 30,000

IL 53 (ROHLWING R

Unknown

Over: IL 390 ELGIN-O'HARE

0.5 M W of I-290, DuPage, IL

Built 2014 ADT: 23,500

I-290 WB 2 IL 390W

Unknown

Over: I-290 & IL 390 EOH

AT 1290 ELGIN INTERC, DuPage, IL

Built 2015 ADT: 450

I-290 WB TO IL 390

Unknown

Over: I-290SB 2 IL 390 EB

Just E of I290, DuPage, IL

Built 2016 ADT: 14,500

I-290 EB TO IL 390

Unknown

Over: IL 390WB TO I-290SB

0.04 M S of Devon, DuPage, IL

Built 2016 ADT: 7,000

I-290 EB TO IL 390

Unknown

Over: I-290 & IL 390

0.041 M S of DEVON, DuPage, IL

Built 2016 ADT: 17,800

WB IL390

Unknown

Over: I290

100' N of Thorndale, DuPage, IL

Built 2016 ADT: 159,600

EB IL390 to NBI290

Unknown

Over: I-290

250' S of Thorndale, DuPage, IL

Built 2016 ADT: 150,800

22ND ST (CERMAK RD

Unknown

Over: I- 88,I-294 RAMPS

0.3 M W OF I-294, DuPage, IL

Built 1958 ADT: 22,000

I- 55 NB TO I-355

Unknown

Over: I- 55

1 M W OF LEMONT RD, DuPage, IL

Built 2007 ADT: 77,600

IL 59 NB

Unknown

Over: I- 88 EW TOLL-IL 110 CKC

1.2M S IL56, DuPage, IL

Built 2014 ADT: 131,500

IL 59 SB

Unknown

Over: I- 88 EW TOLL-IL 110 CKC

1.2M S OF IL56, DuPage, IL

Built 2014 ADT: 105,400

I- 55

Unknown

Over: LEMONT RD

1.5 M NW OF WILL CO, DuPage, IL

Built 2022 ADT: 19,600

MEACHAM GROVE TRAI

Unknown

Over: ROSELLE ROAD

0.35 MI N US 20, DuPage, IL

Built 2004 ADT: 10,900

IL PRAIRIE PATH

Unknown

Over: UPRR, WESLEY ST, FRO

0.46 MI N of IL RT38, DuPage, IL

Built 2010 ADT: 1,000

ILLINOIS PRAIRIE P

Unknown

Over: TAYLOR AVENUE

0.6 MI E Main Street, DuPage, IL

Built 2001 ADT: 800

SOO LINE/METRA RR

Unknown

Over: COUNTY FARM ROAD

.06 MI S IL-20, DuPage, IL

Built 1990 ADT: 16,200

UNION PACIFIC RR

Unknown

Over: COUNTY FARM ROAD

0.8 MI N ILL 38, DuPage, IL

Built 2002 ADT: 15,300

ILL.PRAIRIE PATH B

Unknown

Over: FERRY ROAD

.1 MI W IL59, DuPage, IL

Built 2004 ADT: 5,000

GREAT WESTERN TRAI

Unknown

Over: GRACE STREET

1 MI S OF NORTH AVE, DuPage, IL

Built 2012 ADT: 5,300

GREAT WESTERN TRAI

Unknown

Over: ST. CHARLES ROAD

.25MI E OF GRACE ST, DuPage, IL

Built 2012 ADT: 14,500

Showing 1,651-1,700 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.