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 395

Good

Over: HORSE CREEK

1.0 N OF PAWNEE, Sangamon, IL

Built 1979 Load: 32.4 t ADT: 150

TR-403

Good

Over: S FORK LICK CREEK

6.0 SW OF LOAMI, Sangamon, IL

Built 1997 Load: 32.4 t ADT: 75

TR 403

Good

Over: JOHNS CREEK

3.5 MI N LOWDER, Sangamon, IL

Built 1992 Load: 32.4 t ADT: 75

AUBURN RD 13.5S

Good

Over: PANTHER CREEK

.25MI W IL 4, Sangamon, IL

Built 1989 Load: 32.4 t ADT: 125

TR 411

Good

Over: HORSE CREEK

0.5 E OF PAWNEE, Sangamon, IL

Built 1986 Load: 32.4 t ADT: 150

TR 425 14.75 S

Good

Over: HORSE CREEK

E CITY LIMITS PAWNEE, Sangamon, IL

Built 2005 Load: 32.4 t ADT: 300

TR 138

Good

Over: PANTHER CREEK

2MI NW THAYER, Sangamon, IL

Built 1997 Load: 32.4 t ADT: 75

WILLIAMS TR 438

Good

Over: WOLF CREEK

1.5 NE SPAULDING, Sangamon, IL

Built 1980 Load: 32.4 t ADT: 75

TR 439 S16

Good

Over: HORSE CREEK

1.5MI S PAWNEE, Sangamon, IL

Built 1991 Load: 32.4 t ADT: 275

TR 439-165

Good

Over: CLEAR CREEK

2.0 SE OF PAWNEE, Sangamon, IL

Built 1987 Load: 32.4 t ADT: 100

TR 442

Good

Over: WOLF CREEK

1.0 E OF SPAULDING, Sangamon, IL

Built 1986 Load: 32.4 t ADT: 275

TR 449

Good

Over: CLEAR CREEK

2.5M SE OF PAWNEE, Sangamon, IL

Built 1993 Load: 32.4 t ADT: 100

TR 16

Good

Over: SOUTH FORK CREEK

5.0 SW LOAMI, Sangamon, IL

Built 2005 Load: 32.4 t ADT: 25

TR 465

Good

Over: HORSE CREEK

3.2 MI SOUTH PAWNEE, Sangamon, IL

Built 1989 Load: 32.4 t ADT: 25

TR 474

Good

Over: WOLF CREEK

1.5MI NWBUFFALO HART, Sangamon, IL

Built 1997 Load: 32.4 t ADT: 50

TR 514A 15E

Good

Over: CLEAR CREEK

2.0 NE MECHANICSBURG, Sangamon, IL

Built 1987 Load: 32.4 t ADT: 50

TR 522

Good

Over: GRIFFITH CREEK

2.0 S OF LANESVILLE, Sangamon, IL

Built 1992 Load: 32.4 t ADT: 50

ILLIOPOLIS TR560

Good

Over: WILLOW BRANCH

1.0 S ILLIOPOLIS, Sangamon, IL

Built 1982 Load: 32.4 t ADT: 50

BRUNS LN

Good

Over: SPRING CREEK

SPRINGFIELD, Sangamon, IL

Built 1982 Load: 32.4 t ADT: 250

WESLY CHAPEL

Good

Over: LICK CREEK

3 M S CURRAN, Sangamon, IL

Built 2010 Load: 32.4 t ADT: 250

TR 139

Good

Over: TRIB PRAIRIE CREEK

0.5MI NW FARMINGDALE, Sangamon, IL

Built 1998 Load: 32.4 t ADT: 300

TR 463

Good

Over: TRIB BRUSH CREEK

2.0 MI SE DIVERNON, Sangamon, IL

Built 2000 Load: 32.4 t ADT: 100

WICS RD

Good

Over: TRIB TO CLEARLAKE CK

7 M E SPRINGFLD, Sangamon, IL

Built 2002 Load: 32.4 t ADT: 50

TR-433

Good

Over: BRUSH CR TRIB

0.5 MI NW DIVERNON, Sangamon, IL

Built 2001 Load: 32.4 t ADT: 100

CH-10 FAS621

Good

Over: RICHLAND CREEK

.5 MI S PLSNT PLNS, Sangamon, IL

Built 2002 Load: 32.4 t ADT: 850

FAS621,CH-10

Good

Over: PRAIRE CREEK TRIB

3.0 MI S PLSNT PLNS, Sangamon, IL

Built 2002 Load: 32.4 t ADT: 850

TR 1

Good

Over: FANCY CREEK

3.5 M NE CANTRAL, Sangamon, IL

Built 2005 Load: 32.4 t ADT: 50

TR 212

Good

Over: BIKE PATH

2.2 M NW SPRNGFLD, Sangamon, IL

Built 2005 Load: 32.4 t ADT: 175

CARDINAL HILL RD

Good

Over: BLACK BRANCH CR

.28 M S ROCHESTER, Sangamon, IL

Built 2007 Load: 32.4 t ADT: 1,700

COUNTY HWY 10

Good

Over: LICK CREEK

4.5 S OF NEW BERLIN, Sangamon, IL

Built 2006 Load: 32.4 t ADT: 1,350

CH-10

Good

Over: LICK CREEK

7 S NEW BERLIN, Sangamon, IL

Built 2006 Load: 32.4 t ADT: 1,250

CH 45

Good

Over: TRIB LICK CREEK

2 M N LOAMI, Sangamon, IL

Built 2012 Load: 32.4 t ADT: 1,400

FAS 624 (CH 40)

Good

Over: LICK CREEK

4 M SW NEW BERLIN, Sangamon, IL

Built 2012 Load: 32.4 t ADT: 200

TR182

Good

Over: SPRING CREEK

1.0 N RIDDLE HILL, Sangamon, IL

Built 2000 Load: 32.4 t ADT: 450

COUNTY HWY 28

Good

Over: HORSE CREEK

COUNTY-COTTON HILL, Sangamon, IL

Built 1961 Load: 32.4 t ADT: 800

CARTWRIGHT BP147

Good

Over: RICHLAND CREEK

2.0 W P PLAINS, Sangamon, IL

Built 1981 Load: 32.4 t ADT: 150

TR 8

Good

Over: Lick Creek Trib

0.22 mi N TR 281, Sangamon, IL

Built 2015 Load: 32.4 t ADT: 25

TR 200

Good

Over: TRIB SPRING CREEK

.8 M SE AUBURN, Sangamon, IL

Built 1988 Load: 32.4 t ADT: 200

TR 407

Good

Over: TRIB OF SUGAR CREEK

3.0 MI NW DIVERNON, Sangamon, IL

Built 1994 Load: 32.4 t ADT: 125

068 TR 1

Good

Over: BRUSH CR TRIB

3.0 SW DIVERNON, Sangamon, IL

Built 2004 Load: 32.4 t ADT: 175

TR-428

Good

Over: S.FRK SANG OVERFLOW

2.0 E NEW CITY, Sangamon, IL

Built 2001 Load: 32.4 t ADT: 100

TR 58

Good

Over: DRAINAGE DITCH

1.5 MI W LOWDER, Sangamon, IL

Built 1995 Load: 32.4 t ADT: 75

TR 272 .5E

Good

Over: TRIB BRUSH CREEK

2.5MI NE DIVERNON, Sangamon, IL

Built 1989 Load: 32.4 t ADT: 75

TR 52

Good

Over: DRAINAGE DITCH

3.0 MI NW LOWDER, Sangamon, IL

Built 2000 Load: 32.4 t ADT: 50

TR 427A

Good

Over: DITCH

2.5 M NW LOWDER, Sangamon, IL

Built 2007 Load: 32.4 t ADT: 50

WASHINGTON ST

Good

Over: JACKSONVILLE BRANCH

0.25 MI W CH27, Sangamon, IL

Built 1978 Load: 32.4 t ADT: 8,100

CHERRY RD.

Good

Over: JACKSONVILLE BR

20FT W OUTER PK DR, Sangamon, IL

Built 1964 Load: 32.4 t ADT: 1,850

JEFFERSON ST

Good

Over: HENKLE CR

PAWNEE, ILLINOIS, Sangamon, IL

Built 2000 Load: 32.4 t ADT: 350

PLUMMER BLVD

Good

Over: POLE CAT CREEK

CHATAM, Sangamon, IL

Built 2002 Load: 32.4 t ADT: 1,225

BRIDGE TERRACE

Good

Over: JACKSONVILLE BRANCH

20FT W OUTER PK DR., Sangamon, IL

Built 1990 Load: 32.4 t ADT: 100

Showing 20,601-20,650 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.