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

CREGO ROAD

Fair

Over: BR SOMONAUK CREEK

890N 1100E, DeKalb, IL

Built 1980 Load: 32.4 t ADT: 25

DUFFY ROAD

Fair

Over: SOMONAUK CREEK

1000N 1075E, DeKalb, IL

Built 1983 Load: 32.4 t ADT: 25

PRESERVE ROAD

Fair

Over: LITTLE INDIAN CREEK

900N 635E, DeKalb, IL

Built 1984 Load: 32.4 t ADT: 75

BASTIAN ROAD

Fair

Over: SOMONAUK CREEK

800N 1320E, DeKalb, IL

Built 1969 Load: 32.4 t ADT: 100

SHABBONA GROVE ROA

Fair

Over: SOMONAUK CREEK

700N 1270E, DeKalb, IL

Built 1978 Load: 32.4 t ADT: 50

SCOTT ROAD

Fair

Over: BIG ROCK CREEK

1000N 1715E, DeKalb, IL

Built 1980 Load: 32.4 t ADT: 125

W SANDWICH ROAD

Fair

Over: BR. LITTLR ROCK CRK.

615N 1630E, DeKalb, IL

Built 1979 Load: 32.4 t ADT: 50

SHABBONA GROVE ROA

Fair

Over: LITTLE ROCK CREEK

700N 1720E, DeKalb, IL

Built 1981 Load: 32.4 t ADT: 75

WESSON ROAD

Fair

Over: LITTLE INDIAN CREEK

350N 790E, DeKalb, IL

Built 1982 Load: 32.4 t ADT: 75

MAPLEWOOD ROAD

Fair

Over: BR LITTLE INDIAN CRK

475N 1075E, DeKalb, IL

Built 1989 Load: 32.4 t ADT: 25

LELAND RD

Fair

Over: LITTLE INDIAN CREEK

290N 750E, DeKalb, IL

Built 1997 Load: 32.4 t ADT: 350

COLLEGE AVENUE

Fair

Over: SO BR KISHWAUKEE RIV

COLLEGE AVE DEKALB, DeKalb, IL

Built 1962 Load: 32.4 t ADT: 550

PARK ROAD

Fair

Over: INDIAN CREEK

SHABBONA STATE PARK, DeKalb, IL

Built 1976 Load: 32.4 t ADT: 425

I-88

Fair

Over: STREAM

.50 MI E OF CNTY LIN, DeKalb, IL

Built 1972 Load: 32.4 t ADT: 24,000

US 36(FAP 323)

Fair

Over: SCATTERING FORK

IN TUSCOLA, Douglas, IL

Built 1972 Load: 32.4 t ADT: 5,050

TR 25

Fair

Over: HACKETT BRANCH

3.0 MI NE OF TUSCOLA, Douglas, IL

Built 1979 Load: 32.4 t ADT: 75

TR 214

Fair

Over: JORDAN SLOUGH

1.4 S OF LONGVIEW, Douglas, IL

Built 1978 Load: 32.4 t ADT: 25

TR 54

Fair

Over: DRAINAGE DITCH

2.5 MI S CHESTERVILL, Douglas, IL

Built 1979 Load: 32.4 t ADT: 300

TR 91

Fair

Over: DRY FORK

1.2 M NW OF BOURBON, Douglas, IL

Built 1981 Load: 32.4 t ADT: 200

TR 137

Fair

Over: W FORK KASKASKIA R

2.6 MI NE OF ARTHUR, Douglas, IL

Built 1985 Load: 32.4 t ADT: 50

TR 187 A

Fair

Over: STREAM

2 MI SE OF FILSON, Douglas, IL

Built 1975 Load: 32.4 t ADT: 50

TR 114

Fair

Over: STREAM

1.8 MI SE OF GALTON, Douglas, IL

Built 1975 Load: 32.4 t ADT: 50

TR 114

Fair

Over: STREAM

3 MI NE OF ARCOLA, Douglas, IL

Built 1975 Load: 32.4 t ADT: 50

TR 154

Fair

Over: DEER CREEK

1.8 MI NW HINDSBORO, Douglas, IL

Built 1993 Load: 32.4 t ADT: 75

TR 200

Fair

Over: DRAINAGE DITCH

0.78 MI S TR 87, Douglas, IL

Built 1983 Load: 32.4 t ADT: 50

EAST NEW YORK ST

Fair

Over: EJ&E RR

1.5 M W OF ILL-59, DuPage, IL

Built 1929 Load: 32.4 t ADT: 12,700

IL 19

Fair

Over: SALT CREEK

.3 M W OF WOODALE RD, DuPage, IL

Built 1983 Load: 32.4 t ADT: 27,300

IL 59

Fair

Over: FERRY CREEK

0.25 M N OF IL 56, DuPage, IL

Built 1990 Load: 32.4 t ADT: 34,900

I-355

Fair

Over: ST.JOSEPH CREEK

.5 MI S. US 34, DuPage, IL

Built 1988 Load: 32.4 t ADT: 72,550

Columbia Street

Fair

Over: BNSF Railway

0.4MI S US 34, DuPage, IL

Built 1975 Load: 32.4 t ADT: 1,600

COM ED ACCESS RD

Fair

Over: WAUBANSEE CREEK

.15 M S of McCoy Dr, DuPage, IL

Built 2015 Load: 32.4 t ADT: 200

YORK RD

Fair

Over: SALT CREEK

1M S. 31ST ST, DuPage, IL

Built 1996 Load: 32.4 t ADT: 8,650

DIEHL ROAD

Fair

Over: FERRY CREEK

0.3 MI E Raymond Dr, DuPage, IL

Built 1992 Load: 32.4 t ADT: 4,050

CH38 - 63RD ST

Fair

Over: FLAGG CREEK TRIB

0.1 E IL 83, DuPage, IL

Built 1981 Load: 32.4 t ADT: 9,200

WILLIAMS ROAD

Fair

Over: W. BR. DUPAGE RIVER

0.1M N BATAVIA RD, DuPage, IL

Built 2015 Load: 32.4 t ADT: 1,400

Frontage Road

Fair

Over: SALT CREEK

0.6MI E OF IL 83, DuPage, IL

Built 2008 Load: 32.4 t ADT: 1,750

LIES RD

Fair

Over: KLEIN CR

300 FT W GARY AVE, DuPage, IL

Built 1985 Load: 32.4 t ADT: 7,000

WOODWARD AVE

Fair

Over: PRENTISS CREEK

0.3 MI S 63RD ST, DuPage, IL

Built 1973 Load: 32.4 t ADT: 12,300

PRENTISS DRIVE

Fair

Over: PRENTISS CREEK

.3 MI E WOODWARD AVE, DuPage, IL

Built 1973 Load: 32.4 t ADT: 825

SCHICK ROAD

Fair

Over: I.C.RR

2.2M E OF IL-59, DuPage, IL

Built 1991 Load: 32.4 t ADT: 11,400

WILSON AVE

Fair

Over: C&NW RR

S.OF MAIN ST., DuPage, IL

Built 1987 Load: 32.4 t ADT: 2,400

IL 133(FAP 749)

Fair

Over: STREAM

1 MI E OF REDMON, Edgar, IL

Built 2006 Load: 32.4 t ADT: 2,100

FAS 678(CH 1)

Fair

Over: BROUILLETTS CREEK

4 MI E EDGAR AIRPT, Edgar, IL

Built 1977 Load: 32.4 t ADT: 100

TR 70 A

Fair

Over: STREAM

0.5 MI W OF HUME, Edgar, IL

Built 1979 Load: 32.4 t ADT: 200

TR 7 A(CLARK CO)

Fair

Over: E FORK OF BIG CREEK

.5 MI W OF OLIVER, Edgar, IL

Built 1990 Load: 32.4 t ADT: 50

TR 235A

Fair

Over: HICKORY GROVE CREEK

9.5 MI W OF PARIS, Edgar, IL

Built 1991 Load: 32.4 t ADT: 50

CH 8

Fair

Over: N FORK BROUILLETTS C

1.5 MI W ST BERNICE, Edgar, IL

Built 1993 Load: 32.4 t ADT: 150

CH 18

Fair

Over: BIG CREEK

1.4 MI S BELL RIDGE, Edgar, IL

Built 2001 Load: 32.4 t ADT: 50

TR 274

Fair

Over: CRABAPPLE CREEK

1.75 MI NE OF LOGAN, Edgar, IL

Built 1981 Load: 32.4 t ADT: 75

TR 87

Fair

Over: SALT FORK

2 MI SE OF SCOTTLAND, Edgar, IL

Built 1984 Load: 32.4 t ADT: 25

Showing 7,851-7,900 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.