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 12

Good

Over: TRIB LITTLE MUDDY

WEST CHRISTOPHER, Franklin, IL

Built 1983 Load: 32.4 t ADT: 25

TR 38

Good

Over: BR LITTLE INDIAN CK

SW SESSER, Franklin, IL

Built 1985 Load: 32.4 t ADT: 50

TR 157

Good

Over: OVFL MOSESLAKE

SO MOSES LAKE, Franklin, IL

Built 1985 Load: 32.4 t ADT: 50

TR 234

Good

Over: HAMILTON CREEK

NE EWING EWING TWP, Franklin, IL

Built 1985 Load: 32.4 t ADT: 100

TR 355

Good

Over: TILLEY CK

SW THOMPSONVILLE, Franklin, IL

Built 1985 Load: 32.4 t ADT: 150

CH 7

Good

Over: ICG RR

3 MI N THOMPSONVILLE, Franklin, IL

Built 1986 Load: 32.4 t ADT: 150

TR 45

Good

Over: BRANCH BIG MUDDY

NW MACEDON 1A, Franklin, IL

Built 1986 Load: 32.4 t ADT: 25

TR 112

Good

Over: BR REND LAKE

NORTH SESSER, Franklin, IL

Built 1986 Load: 32.4 t ADT: 100

TR 6

Good

Over: TR LITTLE MUDDY

TR 6 OVER LIT MUDDY, Franklin, IL

Built 1986 Load: 32.4 t ADT: 50

TR 68A

Good

Over: TRIB ANDY CREEK

SOUTH OF COELLO, Franklin, IL

Built 1986 Load: 32.4 t ADT: 750

TR 3

Good

Over: TRIB POND CREEK

E FREEMAN SPUR, Franklin, IL

Built 1986 Load: 32.4 t ADT: 25

TR 36

Good

Over: WHITE OAK CREEK

NW SESSER, Franklin, IL

Built 1987 Load: 32.4 t ADT: 25

TR 204

Good

Over: TRIB POND CREEK

1/2 MI S W FRANKFORT, Franklin, IL

Built 1987 Load: 32.4 t ADT: 400

TR 141

Good

Over: ICG RR

.25 MI EAST FAS 868, Franklin, IL

Built 1987 Load: 32.4 t ADT: 125

TR 119

Good

Over: JORDAN CK

2 MI SOUTH EWING, Franklin, IL

Built 1987 Load: 32.4 t ADT: 50

FAS1877-YELLOWBANK

Good

Over: TRIB BIG MUDDY RIVER

SOUTH OF CHRISTOPHER, Franklin, IL

Built 1988 Load: 32.4 t ADT: 1,100

FAS 875

Good

Over: MIDDLE FORK CREEK

.5 MI N OF MACEDONIA, Franklin, IL

Built 1988 Load: 32.4 t ADT: 125

FAS 875

Good

Over: MID FORK-BIG MUDDY R

.5 MI N OF MACEDONIA, Franklin, IL

Built 1988 Load: 32.4 t ADT: 125

TR 311

Good

Over: ICG RR

NE THOMPSONVILLE, Franklin, IL

Built 1989 Load: 32.4 t ADT: 75

TR 48

Good

Over: TRIB.BIG MUDDY RIVER

SW OF CHRISTOPHER, Franklin, IL

Built 1988 Load: 32.4 t ADT: 25

TR 362

Good

Over: BR.OF AKIN CREEK

NORTH OF AKIN, Franklin, IL

Built 1988 Load: 32.4 t ADT: 50

TR 335

Good

Over: PRAIRIE CREEK

1.25 MI W IL 148, Franklin, IL

Built 1989 Load: 32.4 t ADT: 100

TR 164B

Good

Over: BRANCH BIG MUDDY RV

0825N-1050E, Franklin, IL

Built 1989 Load: 32.4 t ADT: 125

TR 92

Good

Over: TRIB BIG MUDDY RIVER

SE CHRISTOPHER, Franklin, IL

Built 1989 Load: 32.4 t ADT: 50

TR 40

Good

Over: WHITE OAK CREEK

NW SESSER, Franklin, IL

Built 1989 Load: 32.4 t ADT: 25

TR 204

Good

Over: POND CREEK

1240E-140N, Franklin, IL

Built 1990 Load: 32.4 t ADT: 400

TR 21

Good

Over: ICG RR

1700N-2150E, Franklin, IL

Built 1990 Load: 32.4 t ADT: 50

TR 110

Good

Over: SESSER LAKE

1400N-650E, Franklin, IL

Built 1990 Load: 32.4 t ADT: 350

TR 248A

Good

Over: GANTLING BRANCH

600N-1550E, Franklin, IL

Built 1990 Load: 32.4 t ADT: 50

TR 95

Good

Over: WEBBS HILL BRANCH

1325N-1760E, Franklin, IL

Built 1990 Load: 32.4 t ADT: 25

TR 278

Good

Over: TRIB TILLEY CREEK

250N-1750E, Franklin, IL

Built 1991 Load: 32.4 t ADT: 125

TR 165

Good

Over: BRANCH OF AKIN CREEK

1050N-2350E, Franklin, IL

Built 1990 Load: 32.4 t ADT: 75

TR 149B

Good

Over: BN RR

1050N VALIER, Franklin, IL

Built 1991 Load: 32.4 t ADT: 275

FAU 9459

Good

Over: TRIB MIDDLE FORK

1000N-1350E, Franklin, IL

Built 1991 Load: 32.4 t ADT: 450

TR 92

Good

Over: TRIB BIG MUDDY

550N 600E, Franklin, IL

Built 1991 Load: 32.4 t ADT: 50

FAU 9459

Good

Over: TRIB MIDDLE FORK

975N 1350E, Franklin, IL

Built 1991 Load: 32.4 t ADT: 450

TR 260

Good

Over: BRANCH POND CREEK

000N 2000E, Franklin, IL

Built 1992 Load: 32.4 t ADT: 125

TR 93

Good

Over: JORDAN CREEK

1575 E 1375 N, Franklin, IL

Built 1992 Load: 32.4 t ADT: 10

TR 177

Good

Over: ANDY CREEK

675E/950N, Franklin, IL

Built 1992 Load: 32.4 t ADT: 125

TR 34

Good

Over: INDIAN CREEK

375E/1600N, Franklin, IL

Built 1992 Load: 32.4 t ADT: 100

TR 137

Good

Over: BRANCH LAKE MOSES

1550E/1150N, Franklin, IL

Built 1992 Load: 32.4 t ADT: 150

FAS 1972

Good

Over: TRIB SANDUSKY CREEK

2 MI E IL 148, Franklin, IL

Built 1992 Load: 32.4 t ADT: 550

TR 278

Good

Over: TILLEY CREEK

1750E-350N, Franklin, IL

Built 1993 Load: 32.4 t ADT: 10

TR 388

Good

Over: ICG RR

560N 2270E, Franklin, IL

Built 1993 Load: 32.4 t ADT: 50

CH 15

Good

Over: LITTLE INDIAN CREEK

1300N 325E, Franklin, IL

Built 1993 Load: 32.4 t ADT: 250

TR 335

Good

Over: TRIB TO LITTLE MUDDY

300N 025E, Franklin, IL

Built 1993 Load: 32.4 t ADT: 50

TR 21

Good

Over: TRIB SUGAR CAMP CR

1700N 2100E, Franklin, IL

Built 1993 Load: 32.4 t ADT: 50

TR 388-EASTERN TWP

Good

Over: EWING CREEK

2300E725N, Franklin, IL

Built 1993 Load: 32.4 t ADT: 100

TR 204

Good

Over: TRIB TO POND CREEK

1225E025N, Franklin, IL

Built 1994 Load: 32.4 t ADT: 300

TR 11

Good

Over: TRIB REND LAKE

1700N-775E, Franklin, IL

Built 1994 Load: 32.4 t ADT: 25

Showing 17,051-17,100 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.