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

CH-18

Good

Over: Angel Branch

2.1 Mi. W of Henton, Shelby, IL

Built 2017 Load: 32.4 t ADT: 250

TR 362

Good

Over: BR LITTLE WABASH RIV

4 MI SE OF WINDSOR, Shelby, IL

Built 2000 Load: 32.4 t ADT: 100

CEMETARY ST M3100

Good

Over: BECK'S CREEK

IN TOWER HILL, Shelby, IL

Built 2001 Load: 32.4 t ADT: 450

MS-7220A (Wood St)

Good

Over: SIR RR

Shelbyville, Shelby, IL

Built 2017 Load: 32.4 t ADT: 325

ST CLAIR AVE WB

Good

Over: HARDING DITCH

1.5 M W ILL 157, St. Clair, IL

Built 1940 Load: 32.4 t ADT: 5,900

ILL 163

Good

Over: N PRAIRIE duPONT CR

2.6 M S JCT ILL 157, St. Clair, IL

Built 1959 Load: 32.4 t ADT: 3,150

I-64 EB

Good

Over: Metrolink, Abandoned RR'

0.3mi E of 25th St., St. Clair, IL

Built 1973 Load: 32.4 t ADT: 36,450

I-64 WB

Good

Over: Metrolink, Abandoned RR'

0.3mi E of 25th St., St. Clair, IL

Built 1973 Load: 32.4 t ADT: 36,450

ILL 4

Good

Over: S2 Trib L Silver Crk

1.4 MI S OF LEBANON, St. Clair, IL

Built 1990 Load: 32.4 t ADT: 6,050

IL 159

Good

Over: Trib to Richland Crk

0.47MI. N IL 156, St. Clair, IL

Built 2006 Load: 32.4 t ADT: 5,300

IL 15 FAP 103

Good

Over: SUGAR CREEK

.85 MI E. GREENMOUNT, St. Clair, IL

Built 2009 Load: 32.4 t ADT: 12,500

IL 161

Good

Over: WOLF BRANCH CREEK

E OF IL 159, St. Clair, IL

Built 1989 Load: 32.4 t ADT: 19,600

IL 111

Good

Over: SCHOENBERGER CREEK

1/2 MI N OF I-64, St. Clair, IL

Built 1930 Load: 32.4 t ADT: 4,600

OLD FREEBURG CH 4

Good

Over: SUGAR CR

1.25 MI S ILL 13-460, St. Clair, IL

Built 1977 Load: 32.4 t ADT: 500

BETHEL SCH RD/ TR

Good

Over: BRANCH OF OGLE CREEK

2.3 MI N OF OFALLON, St. Clair, IL

Built 1985 Load: 32.4 t ADT: 2,000

FAS 848

Good

Over: MUD CREEK

3.75 MI E IL 13, St. Clair, IL

Built 1986 Load: 32.4 t ADT: 550

TROY OFAL RD/FAU91

Good

Over: ENGLE CREEK

LINCOLN ST. O'FALLON, St. Clair, IL

Built 1988 Load: 32.4 t ADT: 6,500

TR 37A

Good

Over: ROCK SPRINGS BRANCH

.5 M EAST CH 61, St. Clair, IL

Built 1989 Load: 32.4 t ADT: 575

FAU 9169/ HARTMAN

Good

Over: BRANCH RICHLAND CK

1 MILE S O'FALLON, St. Clair, IL

Built 1992 Load: 32.4 t ADT: 10,300

JEFFERSON ROAD

Good

Over: SILVER CREEK

2.5 MI WEST ILL 4, St. Clair, IL

Built 1996 Load: 32.4 t ADT: 3,950

FRANK SCOTT PKWY W

Good

Over: METROLINK

1/8 MI. NE OF RT 161, St. Clair, IL

Built 2001 Load: 32.4 t ADT: 14,200

FRANK SCOTT PKWY W

Good

Over: UNNAMED TRIBUTARY

0.2 MI WEST CH 81, St. Clair, IL

Built 2001 Load: 32.4 t ADT: 12,500

PERRIN RD/CH66

Good

Over: TRIB OF SILVER CREEK

1 MI E IL 4, St. Clair, IL

Built 2004 Load: 32.4 t ADT: 425

CLINTON C.L. RD/CH

Good

Over: QUEENS LAKE BRANCH

.9 MI N. OF IL 177, St. Clair, IL

Built 2006 Load: 32.4 t ADT: 175

CIRCLE DR/CH 83

Good

Over: LITTLE CANTEEN CREEK

1.5MI E ILL RT 157, St. Clair, IL

Built 2009 Load: 32.4 t ADT: 275

EAST O'FALLON DR.

Good

Over: LITTLE CANTEEN CREEK

1.5 MI W OF RT. 159, St. Clair, IL

Built 2011 Load: 32.4 t ADT: 950

Five Forks CH 48

Good

Over: Drum Hill Branch

0.9 Mi SW IL 15, St. Clair, IL

Built 2013 Load: 32.4 t ADT: 75

Old Freeburg Rd

Good

Over: Trib of Richland Cr

.5 M SE IL 15, St. Clair, IL

Built 2012 Load: 32.4 t ADT: 350

Black Lane

Good

Over: Harding Ditch

1.25 mi. N of Bunkum, St. Clair, IL

Built 2013 Load: 32.4 t ADT: 2,500

KEIM BRIDGE/ TR 20

Good

Over: LIVELY BRANCH

1 M S ILL 156, St. Clair, IL

Built 1977 Load: 32.4 t ADT: 375

EIFF RD/ TR 289

Good

Over: BRANCH MUDCREEK

1 MI W CO LINE ROAD, St. Clair, IL

Built 1980 Load: 32.4 t ADT: 225

QUIRIN RD/TR 84

Good

Over: WEST FORK CREEK

3 MI SW SMITHTON, St. Clair, IL

Built 1983 Load: 32.4 t ADT: 350

WEILMNSTR RD/ TR 3

Good

Over: LITTLE MUDCREEK

0.5 MI N DARMSTADT, St. Clair, IL

Built 1983 Load: 32.4 t ADT: 10

KNAB ROADTR 209

Good

Over: WEST FORK CK

2 MI W IL 159, St. Clair, IL

Built 1984 Load: 32.4 t ADT: 950

ENGL TWP L RD TR 2

Good

Over: BRANCH OF SILVER CK

1.0 M N CH 20, St. Clair, IL

Built 1985 Load: 32.4 t ADT: 450

SCHMIDT LANE TR 16

Good

Over: DOUGLAS CREEK

1.8 MI W IL. 159, St. Clair, IL

Built 1985 Load: 32.4 t ADT: 350

TR11PLEASANT VALLE

Good

Over: BR OF EAST BRANCH

1.3MI EAST OF CH50, St. Clair, IL

Built 1988 Load: 32.4 t ADT: 50

ROACHTOWN ROADTR 8

Good

Over: DOUGLAS CREEK

1.49 MI S. ILL 158, St. Clair, IL

Built 1991 Load: 32.4 t ADT: 800

SCHLUETER RDMSS500

Good

Over: RICHLAND CREEK

0.75 MI E ILL 159, St. Clair, IL

Built 1991 Load: 32.4 t ADT: 900

SAEGER RD/ TR 135

Good

Over: HICKMAN CREEK

2.8 MI W ILL 163, St. Clair, IL

Built 1991 Load: 32.4 t ADT: 325

TR 264

Good

Over: BRANCH LITTLE SILVER

1.5M E IL 4, St. Clair, IL

Built 1993 Load: 32.4 t ADT: 50

WAELTZ RD/ TR 287

Good

Over: DOZA CREEK

1 MI W CH.49, St. Clair, IL

Built 1994 Load: 32.4 t ADT: 50

TR 247

Good

Over: TRIB LITTLE MUD CK

0.6M E CH 92, St. Clair, IL

Built 1996 Load: 32.4 t ADT: 25

FUNK SCHOOL RD

Good

Over: HAZEL CREEK

1.5 MI NO JEFFERSON, St. Clair, IL

Built 1997 Load: 32.4 t ADT: 175

ZINGG ROAD

Good

Over: PRAIRIE DU PONT CK

0.6 MI W OF IL 163, St. Clair, IL

Built 1997 Load: 32.4 t ADT: 450

WASHINGTON CO LINE

Good

Over: MUD CREEK

2.5 MI NORTH ILL 13, St. Clair, IL

Built 1997 Load: 32.4 t ADT: 300

STEIN ROAD

Good

Over: TRIB TO LITTLE MUD C

0.25 W. CH 92, St. Clair, IL

Built 1999 Load: 32.4 t ADT: 50

REHEIS ROAD TR 251

Good

Over: PRAIRIE DU LONG CK

.3 MI W CLUB CONG RD, St. Clair, IL

Built 1998 Load: 32.4 t ADT: 200

HIGH PRAIRIE SCH R

Good

Over: DOUGLAS CREEK

1.2 MILE N, CH 47, St. Clair, IL

Built 1999 Load: 32.4 t ADT: 200

KECK RD/TR 113

Good

Over: ASH CREEK

0.7 MI E IL 158, St. Clair, IL

Built 2010 Load: 32.4 t

Showing 20,851-20,900 of 27,743 bridges

Related

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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.