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 523A

Good

Over: OTTER CREEK

N 15TH RD E 2370, LaSalle, IL

Built 1985 Load: 32.4 t ADT: 200

TR 170

Good

Over: PECUMSAGAM CREEK

E 10TH RD N 3270, LaSalle, IL

Built 1985 Load: 32.4 t ADT: 50

TR 222

Good

Over: BR INDIAN CREEK

E 1250 TH N 4605, LaSalle, IL

Built 1986 Load: 32.4 t ADT: 250

TR 148

Good

Over: LITTLE VERMILION

E 8TH RD N 4192, LaSalle, IL

Built 1986 Load: 32.4 t ADT: 75

TR 493

Good

Over: WOLF CR

N 18 TH E 1980, LaSalle, IL

Built 1986 Load: 32.4 t ADT: 50

FAS 263 CH 44

Good

Over: CREEK

E 950 TH N 1425, LaSalle, IL

Built 1987 Load: 32.4 t ADT: 250

TR 471

Good

Over: BR BAILEY CR

N 1950 TH E 550, LaSalle, IL

Built 1987 Load: 32.4 t ADT: 100

TR441

Good

Over: BR. COVEL CREEK

N22ND E2010TH, LaSalle, IL

Built 1987 Load: 32.4 t ADT: 25

TR 462

Good

Over: ROODS CREEK

E2975TH N4100, LaSalle, IL

Built 1987 Load: 32.4 t ADT: 25

TR 122 B

Good

Over: SANDY CR.

E 7TH RD N 975, LaSalle, IL

Built 1987 Load: 32.4 t ADT: 50

TR 125B

Good

Over: L VERMILLION RIVER

N 40TH RD, E 625TH, LaSalle, IL

Built 1989 Load: 32.4 t ADT: 25

TR 561

Good

Over: DRAINAGE DITCH

N6TH RD, E 815, LaSalle, IL

Built 1988 Load: 32.4 t ADT: 10

FAS 261 CH 34

Good

Over: CREEK

N 27TH RD, E 1350, LaSalle, IL

Built 1989 Load: 32.4 t ADT: 1,200

TR 483

Good

Over: BAILEY CREEK

N1851ST,E325TH, LaSalle, IL

Built 1989 Load: 32.4 t ADT: 100

TR 7 N 0TH RD

Good

Over: STREAM

N 0TH RD, E 1130TH, LaSalle, IL

Built 1989 Load: 32.4 t ADT: 25

TR 563

Good

Over: STREAM

N5TH, E670TH, LaSalle, IL

Built 1989 Load: 32.4 t ADT: 100

E 18TH RD,FAU 6160

Good

Over: PRAIRIE CREEK

E.18TH, N.1420, LaSalle, IL

Built 1991 Load: 32.4 t ADT: 350

FAS 2255

Good

Over: FOX RIVER

+/-2MIL E ILL23, LaSalle, IL

Built 1996 Load: 32.4 t ADT: 1,000

TR129

Good

Over: BRUMBACH CR.

N.3450TH E2310, LaSalle, IL

Built 1994 Load: 32.4 t ADT: 100

TR 535

Good

Over: OTTER CREEK

E.2410 N 14TH, LaSalle, IL

Built 1993 Load: 32.4 t ADT: 25

E.29TH-TR458

Good

Over: BR WAUPECAN CREEK.

3 MI SE RANSOM, LaSalle, IL

Built 1995 Load: 32.4 t ADT: 25

CH 22 FAS 1270

Good

Over: INDIAN CREEK

N 4510 E 1600, LaSalle, IL

Built 1996 Load: 32.4 t ADT: 225

TR 535

Good

Over: WAUPECAN CREEK

.3M E OF E29TH, LaSalle, IL

Built 1996 Load: 32.4 t ADT: 25

TR 523A

Good

Over: OTTER CREEK

N 15TH E 2015, LaSalle, IL

Built 1996 Load: 32.4 t ADT: 400

TR 168

Good

Over: TRIB OF VERMILLION R

E 10TH, N 2130, LaSalle, IL

Built 1996 Load: 32.4 t ADT: 75

TR 67

Good

Over: L INDIAN CREEK

N44TH E 2090, LaSalle, IL

Built 1997 Load: 32.4 t ADT: 150

TR 206

Good

Over: UNNAMED STREAM

E1159th, N 2100, LaSalle, IL

Built 2000 Load: 32.4 t ADT: 50

TR 211B

Good

Over: BUCK CREEK

N35TH, E1360, LaSalle, IL

Built 1997 Load: 32.4 t ADT: 225

TR 211B

Good

Over: BUCK CREEK

N35TH, E1510, LaSalle, IL

Built 1997 Load: 32.4 t ADT: 250

TR 452

Good

Over: BR. MISSION CREEK

E2750 N4005, LaSalle, IL

Built 1998 Load: 32.4 t ADT: 50

FAS 259

Good

Over: FOX RIVER

E2603, N4125, LaSalle, IL

Built 2008 Load: 32.4 t ADT: 1,750

TR 179

Good

Over: CROOKED LEG CREEK

N. 38th E. 1665, LaSalle, IL

Built 1999 Load: 32.4 t ADT: 250

FAS 1270

Good

Over: TRIB OF INDIAN CREEK

4.2 S, 1.5 W LELAND, LaSalle, IL

Built 1999 Load: 32.4 t ADT: 225

TR 129

Good

Over: CROOKED LEG CREEK

N 4050, E 1495, LaSalle, IL

Built 2000 Load: 32.4 t ADT: 25

TR 523B

Good

Over: WAUPECAN CREEK

0.8 MI. E. RANSOM, LaSalle, IL

Built 2000 Load: 32.4 t ADT: 225

TR 249

Good

Over: UNNAMED CREEK

N. 32ND RD, E2225, LaSalle, IL

Built 2001 Load: 32.4 t ADT: 300

TR 262

Good

Over: UNNAMED STREAM

E1500, N2540, LaSalle, IL

Built 2001 Load: 32.4 t ADT: 75

TR 18A

Good

Over: LITTLE SANDY CREEK

E 1ST, N 1330, LaSalle, IL

Built 2002 Load: 32.4 t ADT: 10

FAS 178

Good

Over: BR INDIAN CR

E 10TH N 4750, LaSalle, IL

Built 2003 Load: 32.4 t ADT: 175

TR 35A

Good

Over: SOMONAUK CREEK

N 46TH E 2597, LaSalle, IL

Built 2005 Load: 32.4 t ADT: 950

TR 455(N 21ST)

Good

Over: UNNAMED STREAM

N21ST, E 863, LaSalle, IL

Built 2003 Load: 32.4 t ADT: 250

TR432C

Good

Over: UNNAMED STREAM

1207 E. 26TH, LaSalle, IL

Built 2004 Load: 32.4 t ADT: 25

CO RD 32

Good

Over: ROODS CREEK

N 41ST,E 2925, LaSalle, IL

Built 2008 Load: 32.4 t ADT: 1,150

CH 54

Good

Over: BR. OF CEDAR CREEK

2249 E. 2ND, LaSalle, IL

Built 2004 Load: 32.4 t ADT: 150

TR 109(N 4101ST)

Good

Over: BR INDIAN CREEK

E. 1765, N 4101ST, LaSalle, IL

Built 2004 Load: 32.4 t ADT: 25

TR 454-B

Good

Over: WAUPECAN CREEK

1550 E. 28TH, LaSalle, IL

Built 2005 Load: 32.4 t ADT: 50

TR-38

Good

Over: BRANCH OF CEDAR CR

E 275TH N 2350, LaSalle, IL

Built 2005 Load: 32.4 t ADT: 125

TR 525

Good

Over: BR LITTLE SANDY CR

N 14TH E 010, LaSalle, IL

Built 2005 Load: 32.4 t ADT: 25

CO RD 16

Good

Over: CEDAR CREEK

E 175 N 2340, LaSalle, IL

Built 2008 Load: 32.4 t ADT: 150

CO RD 6

Good

Over: TRIB VERMILION R

N2150 E950, LaSalle, IL

Built 2009 Load: 32.4 t ADT: 525

Showing 18,601-18,650 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.