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 272A

Good

Over: SPOIL BANK DITCH

1.1 MI S US 45, Saline, IL

Built 2013 Load: 32.4 t ADT: 25

Netty Green Road

Good

Over: Middle Fork Saline R

0.7 mi W FAS 898, Saline, IL

Built 2012 Load: 32.4 t ADT: 25

LAND RD

Good

Over: BANKSTON FORK

1.25 M N HARRISBURG, Saline, IL

Built 2015 Load: 32.4 t ADT: 50

HORSESHOE RD

Good

Over: BACKWATER CREEK

2MI W GALLATIN CO, Saline, IL

Built 2016 Load: 32.4 t ADT: 175

GARNER RD

Good

Over: BRUSH CREEK

0.6 MI N US 45, Saline, IL

Built 2018 Load: 32.4 t ADT: 25

TR-55 Ebenezer Ch

Good

Over: Mid Frk Saline River

3.0 MI W OF GALATIA, Saline, IL

Built 2015 Load: 32.4 t ADT: 150

TR 193

Good

Over: STREAM

5 MI E OF HARRISBURG, Saline, IL

Built 1987 Load: 32.4 t ADT: 50

FAU 9549-CHURCH ST

Good

Over: DITCH

E OF CAPITOL ST, Saline, IL

Built 1985 Load: 32.4 t ADT: 200

CLUB STREET

Good

Over: PANKEY BRANCH

NORTH OF SLOAN ST, Saline, IL

Built 1984 Load: 32.4 t ADT: 250

WEBSTER STREET

Good

Over: DRAINAGE DITCH

.09M S OF FAIRGROUND, Saline, IL

Built 1987 Load: 32.4 t ADT: 150

CS 1600-SUTTON RD

Good

Over: DRAINAGE DITCH

SO. EDGE OF ELDORADO, Saline, IL

Built 1990 Load: 32.4 t ADT: 75

4TH ST

Good

Over: DRAINAGE DITCH

4TH ST & US RTE 45, Saline, IL

Built 1990 Load: 32.4 t ADT: 4,200

WILMOTH ST-FAU 955

Good

Over: UNNAMED STREAM

NW OF GRANGER ST, Saline, IL

Built 1994 Load: 32.4 t ADT: 225

SLOAN ST(FAU 9550)

Good

Over: PANKEY CREEK

0.2 MI E ILL 34, Saline, IL

Built 2001 Load: 32.4 t ADT: 3,550

FAS 556(CH 4)

Good

Over: BUCKHART CREEK

3 MI E ROCHESTER, Sangamon, IL

Built 2012 Load: 32.4 t ADT: 1,650

MACARTHUR EXTENSIO

Good

Over: NORFOLK SOUTHERN

JUST N. OF I 72, Sangamon, IL

Built 2009 Load: 32.4 t ADT: 8,200

CH 33/OLD 36

Good

Over: BR LONG POINT SLOUGH

.5MI N I72 ON 0LD 36, Sangamon, IL

Built 1975 Load: 32.4 t ADT: 1,700

I-72 / US 36

Good

Over: LITTLE SPRING CREEK

.25M W FARMINGDAL RD, Sangamon, IL

Built 1975 Load: 32.4 t ADT: 17,100

OLD US 36

Good

Over: CLEAR CREEK

3.3M E BUFFALO, Sangamon, IL

Built 2001 Load: 32.4 t ADT: 550

IL 104

Good

Over: JOHNS CREEK

4.2 MI W AUBURN, Sangamon, IL

Built 2007 Load: 32.4 t ADT: 3,500

COUNTY HWY 12

Good

Over: SANGAMON RIVER

3.5 MI NE ROCHESTER, Sangamon, IL

Built 1957 Load: 32.4 t ADT: 1,300

TR 120 (8W)

Good

Over: SOUTH FORK LICK CR

2.5 NE OF LOAMI, Sangamon, IL

Built 1966 Load: 32.4 t ADT: 75

TR 189

Good

Over: Trib to Griffith Ck

1 mi SE Mechanicsbrg, Sangamon, IL

Built 2012 Load: 32.4 t ADT: 50

TR 189

Good

Over: Trib to Griffith Ck

1 mi SE Mechanicsbrg, Sangamon, IL

Built 2012 Load: 32.4 t ADT: 50

FAS 613

Good

Over: SPRING CREEK

2 M W BERLIN, Sangamon, IL

Built 2009 Load: 32.4 t ADT: 1,100

CH 8/FAS 613

Good

Over: LITTLE SPRING CREEK

CH 8 AT RIDDLE HILL, Sangamon, IL

Built 1989 Load: 32.4 t ADT: 2,900

CH 10, FAS 621

Good

Over: SPRING CREEK

1.0 MI NW NEW BERLIN, Sangamon, IL

Built 2000 Load: 32.4 t ADT: 850

COUNTY HWY 21

Good

Over: RICHLAND CREEK

.5 N PLEASANT PLAINS, Sangamon, IL

Built 1994 Load: 32.4 t ADT: 450

RT621 14.WCOUNTY 1

Good

Over: PRAIRE CREEK

3.0 N BERLIN, Sangamon, IL

Built 1981 Load: 32.4 t ADT: 850

FAS 622/CH 15

Good

Over: SPRING CREEK

1MI W RIDDLE HILL, Sangamon, IL

Built 1994 Load: 32.4 t ADT: 1,300

CH-15

Good

Over: LITTLE SPRING CR

2 M NW CURRAN, Sangamon, IL

Built 2008 Load: 32.4 t ADT: 1,300

FAS623-CH45

Good

Over: SO FORK LICK CREEK

2.5 MI S LOAMI, Sangamon, IL

Built 1986 Load: 32.4 t ADT: 175

CH 45 FAS623

Good

Over: JOHNS CREEK

3.0 MI S LOAMI, Sangamon, IL

Built 1986 Load: 32.4 t ADT: 175

FAS624-CH40

Good

Over: LICK CREEK

2.0 MI E OF LOAMI, Sangamon, IL

Built 1985 Load: 32.4 t ADT: 325

FAU 7998

Good

Over: POLECAT CREEK

IN CHATHAM, Sangamon, IL

Built 1984 Load: 32.4 t ADT: 2,000

FAU 7998 CH 40

Good

Over: LAKE SPRINGFIELD

1.5 MI E OF CHATHAM, Sangamon, IL

Built 1987 Load: 32.4 t ADT: 8,000

FAS 624A (CH 40)

Good

Over: Brush Creek

.25 mi E FAS 1622, Sangamon, IL

Built 2014 Load: 32.4 t ADT: 1,050

FAS 624A (CH 40)

Good

Over: HORSE CREEK

.15 mi W TR 374, Sangamon, IL

Built 2006 Load: 32.4 t ADT: 1,050

CH 47

Good

Over: PRAIRIE CREEK

3.5 NORTH BERLIN, Sangamon, IL

Built 2000 Load: 32.4 t ADT: 225

COUNTY HWY 6

Good

Over: SUGAR CREEK

S OF THAYER, Sangamon, IL

Built 2002 Load: 32.4 t ADT: 500

COUNTY HWY 28

Good

Over: HORSE CREEK

.25 S PAWNEE, Sangamon, IL

Built 2001 Load: 32.4 t ADT: 325

CH 29

Good

Over: Brush Creek

1 mi W FAS 1622, Sangamon, IL

Built 2015 Load: 32.4 t ADT: 325

COUNTY HWY 2

Good

Over: WOLF CREEK

1.0 E WILLIAMSVILLE, Sangamon, IL

Built 1992 Load: 32.4 t ADT: 1,400

COUNTY HWY 46

Good

Over: PRAIRIE CREEK

2MI SE SALISBURY, Sangamon, IL

Built 1993 Load: 32.4 t ADT: 300

CH 48

Good

Over: WOLF CREEK

3 M SE WILLIAMSVILLE, Sangamon, IL

Built 2012 Load: 32.4 t ADT: 150

CH 56

Good

Over: S FORK SANG RIVER

2.0 MI W ROCHESTER, Sangamon, IL

Built 1999 Load: 32.4 t ADT: 7,100

TR 478

Good

Over: SANGAMON RIVER

1MI N BUCKHART, Sangamon, IL

Built 1996 Load: 32.4 t ADT: 200

FAS 623 CH 45

Good

Over: JOHNS CREEK

2.0 N OF LOWDER, Sangamon, IL

Built 1985 Load: 32.4 t ADT: 300

FAS 0625

Good

Over: SUGAR CREEK TRIB.

2.5 MI W DIVERNON, Sangamon, IL

Built 1995 Load: 32.4 t ADT: 1,200

TR 7 (9.5N)

Good

Over: CANTRALL CREEK

0.5 E CANTRALL, Sangamon, IL

Built 2000 Load: 32.4 t ADT: 50

Showing 20,501-20,550 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.