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

TR-273

Good

Over: BRICKYARD BRANCH

1.5 MI NW ST ELMO, Fayette, IL

Built 1988 Load: 32.4 t ADT: 50

TR 382

Good

Over: CAMP CREEK

1 MI NE BROWNSTOWN, Fayette, IL

Built 1990 Load: 32.4 t ADT: 50

TR-361

Good

Over: TRIB HURRICANE CK

1600N-270E, Fayette, IL

Built 1990 Load: 32.4 t ADT: 50

FAS-716 (CH 4)

Good

Over: TRIB SUGAR CREEK

1 MI N ST ELMO, Fayette, IL

Built 1991 Load: 32.4 t ADT: 1,050

FAS 716

Good

Over: WATSON CREEK

2 MI N ST. ELMO, Fayette, IL

Built 1990 Load: 32.4 t ADT: 950

TR-240

Good

Over: SANDY RUN CREEK

1 MI SE VANDALIA, Fayette, IL

Built 1989 Load: 32.4 t ADT: 20

TR-172

Good

Over: HOFFMAN CREEK

4 MI S RAMSEY, Fayette, IL

Built 1989 Load: 32.4 t ADT: 100

FAS-712 (CH 19)

Good

Over: BOLT CREEK

3.6 MI E RAMSEY, Fayette, IL

Built 1991 Load: 32.4 t ADT: 1,000

TR-101

Good

Over: TRIB RAMSEY CREEK

S RAMSEY LAKE ST PK, Fayette, IL

Built 1997 Load: 32.4 t ADT: 75

TR-161

Good

Over: TRIB BIG CREEK

1.5 MI SW WRIGHTS CR, Fayette, IL

Built 1991 Load: 32.4 t ADT: 50

TR-348

Good

Over: SUCK CREEK

4 MI N BROWNSTOWN, Fayette, IL

Built 1995 Load: 32.4 t ADT: 35

TR-315

Good

Over: CAMP CREEK

2 MI W BROWNSTOWN, Fayette, IL

Built 1992 Load: 32.4 t ADT: 75

TR-470

Good

Over: SUGAR CREEK

2 MI N ST ELMO, Fayette, IL

Built 1992 Load: 32.4 t ADT: 50

TR-100

Good

Over: RACCOON CREEK

3.5 MI SW VANDALIA, Fayette, IL

Built 1992 Load: 32.4 t ADT: 125

TR-333

Good

Over: TRIB HURRICANE CREEK

4.5 MI W VANDALIA, Fayette, IL

Built 1992 Load: 32.4 t ADT: 175

TR-356

Good

Over: HICKORY CREEK

4 MI S BROWNSTOWN, Fayette, IL

Built 1992 Load: 32.4 t ADT: 200

FAS-717

Good

Over: LONE GROVE CREEK

W EDGE ST PETER, Fayette, IL

Built 1993 Load: 32.4 t ADT: 500

FAS-1714

Good

Over: DRAINAGE DITCH

2 MI N SEFTON, Fayette, IL

Built 1994 Load: 32.4 t ADT: 225

TR-293

Good

Over: TRIB VANDALIA LAKE

1 MI NW LAKE VANDALI, Fayette, IL

Built 1996 Load: 32.4 t ADT: 100

TR-366

Good

Over: SOUTH FORK CREEK

5 MI NW ST ELMO, Fayette, IL

Built 1996 Load: 32.4 t ADT: 50

TR-177

Good

Over: ASH CREEK

3 MI SE RAMSEY, Fayette, IL

Built 1994 Load: 32.4 t ADT: 100

TR-411

Good

Over: LICK CREEK

1 MI NE MULBERRY GRO, Fayette, IL

Built 1994 Load: 32.4 t ADT: 35

TR-260

Good

Over: RAMSEY CREEK

3.5 MI SE RAMSEY, Fayette, IL

Built 1994 Load: 32.4 t ADT: 50

FAS 2795

Good

Over: VANDALIA DRAIN DITCH

1.5 MI NE CORRECT CN, Fayette, IL

Built 1994 Load: 32.4 t ADT: 150

TR-508A

Good

Over: LITTLE HICKORY CREEK

3.5 MI N ST PETER, Fayette, IL

Built 1994 Load: 32.4 t ADT: 50

TR-412

Good

Over: LITTLE HICKORY CR

3 MI W ST PETER, Fayette, IL

Built 1994 Load: 32.4 t ADT: 50

TR-485

Good

Over: HURRICANE CREEK

1.5 MI S MULBERRY GV, Fayette, IL

Built 1995 Load: 32.4 t ADT: 50

TR-308

Good

Over: CAMP CREEK

4 MI E VANDALIA, Fayette, IL

Built 1999 Load: 32.4 t ADT: 50

TR-278

Good

Over: TRIB BOLT CREEK

4 MI ENE RAMSEY, Fayette, IL

Built 2000 Load: 32.4 t ADT: 20

TR-389

Good

Over: TRIB STONE CREEK

W ST JAMES, Fayette, IL

Built 2000 Load: 32.4 t ADT: 175

TR-260

Good

Over: TRIB RAMSEY CREEK

4.5 MI SSE RAMSEY, Fayette, IL

Built 2000 Load: 32.4 t ADT: 100

TR-514

Good

Over: LONG GROVE BRANCH

1 MI E ST PETER, Fayette, IL

Built 1995 Load: 32.4 t ADT: 125

FAS2720(CH7)

Good

Over: LITTLE HICKORY CREEK

1 M N LOOGOOTEE, Fayette, IL

Built 1996 Load: 32.4 t ADT: 350

TR 571

Good

Over: STEVE CREEK

1MI NW OFF S RT 51, Fayette, IL

Built 2003 Load: 32.4 t ADT: 75

TR 19

Good

Over: ASH CRK

2 MI N RAMSEY LAKE, Fayette, IL

Built 1998 Load: 32.4 t ADT: 125

TR 415

Good

Over: VANDALIA DRAIN DITCH

1 MI SE VANDALIA, Fayette, IL

Built 1997 Load: 32.4 t ADT: 25

TR 122

Good

Over: TRIB RAMSEY CRK

1.7MI W RAMSEY LK SP, Fayette, IL

Built 1999 Load: 32.4 t ADT: 100

TR 615

Good

Over: NORTH FORK

2.7 MI E CARLYLE LK, Fayette, IL

Built 1999 Load: 32.4 t ADT: 150

TR 356

Good

Over: LITTE HICKORY CREEK

7 MI S BROWNSTOWN, Fayette, IL

Built 2000 Load: 32.4 t ADT: 75

TR 356

Good

Over: TRIB LITTLE HICKORY

4.5 MI NW ST PETER, Fayette, IL

Built 2000 Load: 32.4 t ADT: 75

CH 19

Good

Over: HURRICANE CREEK

8 MI SW VANDALIA, Fayette, IL

Built 2001 Load: 32.4 t ADT: 375

TR 342

Good

Over: SANDY RUN CREEK

2 MIS BROWNSTOWN, Fayette, IL

Built 2001 Load: 32.4 t ADT: 150

TR 413

Good

Over: TRIB RACCOON CREEK

2 MI SW VANDALIA, Fayette, IL

Built 2002 Load: 32.4 t ADT: 50

TR 250

Good

Over: CAMP CREEK

2 MI E VANDALIA, Fayette, IL

Built 2002 Load: 32.4 t ADT: 25

FAS 712

Good

Over: WOLF CREEK

0.5 MI.E.WRIGHTS CR., Fayette, IL

Built 2002 Load: 32.4 t ADT: 450

TR-442

Good

Over: FORK CREEK

3 MI. NW ST ELMO, Fayette, IL

Built 2002 Load: 32.4 t ADT: 100

TR-518

Good

Over: LITTLE MOCCASIN CR.

2 MI.E.WRIGHTS CORNR, Fayette, IL

Built 2002 Load: 32.4 t ADT: 35

TR 264A

Good

Over: CAMP CREEK

2 MI E CORR CNTR, Fayette, IL

Built 2003 Load: 32.4 t ADT: 175

TR 413

Good

Over: RACCOON CREEK

1.5 MI SE HAGARSTOWN, Fayette, IL

Built 2002 Load: 32.4 t ADT: 50

TR 471

Good

Over: CREEK

7.25 MI NW ST PETER, Fayette, IL

Built 2002 Load: 32.4 t ADT: 50

Showing 16,801-16,850 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.