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

CH 17(FAS 483)

Good

Over: DRAINAGE DITCH

2.8MI N WAYNESVILLE, De Witt, IL

Built 1985 Load: 32.4 t ADT: 450

CH 17(FAS 483)

Good

Over: DRAINAGE DITCH

2.95MI N WAYNESVILLE, De Witt, IL

Built 1985 Load: 32.4 t ADT: 450

FAS 483(CH 17)

Good

Over: STREAM

S EDGE WAYNESVILLE, De Witt, IL

Built 1992 Load: 32.4 t ADT: 125

FAS 483(CH 17)

Good

Over: DRAINAGE DITCH

1 MI S WAYNESVILLE, De Witt, IL

Built 1993 Load: 32.4 t ADT: 125

TR 162

Good

Over: STREAM

4.5 MI NE OF MAROA, De Witt, IL

Built 1993 Load: 32.4 t ADT: 50

TR 238 A

Good

Over: DRAINAGE DITCH

6 MI NE OF WELDON, De Witt, IL

Built 1993 Load: 32.4 t ADT: 25

TR 99

Good

Over: DRAINAGE DITCH

1 MI SE FARMER CITY, De Witt, IL

Built 1999 Load: 32.4 t ADT: 50

ch 15

Good

Over: Friends Creek

3 mi SW of Weldon, De Witt, IL

Built 2013 Load: 32.4 t ADT: 225

ALLEN ST(MS 2900)

Good

Over: SALT CREEK

FARMER CITY, De Witt, IL

Built 1991 Load: 32.4 t ADT: 325

MAIN (MS 8000)

Good

Over: SALT CREEK

FARMER CITY, De Witt, IL

Built 1996 Load: 32.4 t ADT: 950

FAU 7337(MADISON S

Good

Over: COON CREEK

CITY OF CLINTON, De Witt, IL

Built 2000 Load: 32.4 t ADT: 1,300

WILLIAM ST(MS 7900

Good

Over: TRIB SALT CREEK

FARMER CITY, De Witt, IL

Built 2010 Load: 32.4 t ADT: 50

IL 23

Good

Over: SOMONAUK CREEK

2.3 MI. S. OF US 30, DeKalb, IL

Built 1994 Load: 32.4 t ADT: 2,150

IL 64 FAP 307

Good

Over: DITCH

1.04 MI E OF IL 23N, DeKalb, IL

Built 2002 Load: 32.4 t ADT: 7,700

IL 72 FAP 553

Good

Over: S BR KISHWAUKEE RIVR

IN KINGSTON (W), DeKalb, IL

Built 2004 Load: 32.4 t ADT: 2,850

IL 64 FAP 17

Good

Over: SE BR. OWENS CREEK

7.26 MI W OF IL 23(S, DeKalb, IL

Built 2002 Load: 32.4 t ADT: 4,250

PEACE RD

Good

Over: BR. KISHWAUKEE RIVER

2640N , 1380E, DeKalb, IL

Built 1996 Load: 32.4 t ADT: 12,300

CHICAGO RD

Good

Over: BR INDIAN CREEK

430N 200E, DeKalb, IL

Built 2007 Load: 32.4 t ADT: 1,200

KIRKLAND ROAD

Good

Over: KINGSBURY CREEK

3500N 380E, DeKalb, IL

Built 2001 Load: 32.4 t ADT: 225

SHABBONA RD

Good

Over: S BR KISHWAUKEE RV

1100N 320E, DeKalb, IL

Built 2007 Load: 32.4 t ADT: 675

SUYDAM RD

Good

Over: BUCK BR SOMONAUK CRK

200N 1395E, DeKalb, IL

Built 2015 Load: 32.4 t ADT: 775

CH 26

Good

Over: S Br Kishwaukee Rive

3250N 980E, DeKalb, IL

Built 2015 Load: 32.4 t ADT: 1,600

CHICAGO RD

Good

Over: BR LITTLE INDIAN CR

1170 E 550 N, DeKalb, IL

Built 2007 Load: 32.4 t ADT: 1,550

COLTONVILLE ROAD

Good

Over: KISHWAUKEE RIVER

2370N 1135E, DeKalb, IL

Built 2016 Load: 32.4 t ADT: 5,250

OLD STATE ROAD

Good

Over: OWENS CREEK

2785 N 385 E, DeKalb, IL

Built 2011 Load: 32.4 t ADT: 1,050

perry rd.CH7

Good

Over: Battle creek

1500N 1490E, DeKalb, IL

Built 2014 Load: 32.4 t ADT: 2,150

W CO Line Rd (FAS1

Good

Over: Dry Run

1030N 00E, DeKalb, IL

Built 2014 Load: 32.4 t ADT: 475

FAS-96 (Somonauk R

Good

Over: Little Rock Creek

915N 1550E, DeKalb, IL

Built 2018 Load: 32.4 t ADT: 3,050

WHEELER ROAD

Good

Over: BR OF KISHWAUKEE RV

3400N 175E, DeKalb, IL

Built 1984 Load: 32.4 t ADT: 175

IRENE RD

Good

Over: S BR KISHWAUKEE RIV.

3310 N 240 E, DeKalb, IL

Built 2004 Load: 32.4 t ADT: 625

SCOUT RD

Good

Over: KINGSBURY CREEK

1 MI NW OF KIRKLAND, DeKalb, IL

Built 2004 Load: 32.4 t ADT: 200

MCNEAL RD

Good

Over: S BR KISHWAUKEE RV

3500N 060E, DeKalb, IL

Built 2020 Load: 32.4 t ADT: 75

DERBYLINE RD (TR 5

Good

Over: CN/IC RR

3100N 1420E, DeKalb, IL

Built 1989 Load: 32.4 t ADT: 1,100

HEMLOCK ROAD

Good

Over: COON CREEK

3400N 1730E, DeKalb, IL

Built 1993 Load: 32.4 t ADT: 100

ASH RD

Good

Over: BR. OF DEER CREEK

3350N , 1390E, DeKalb, IL

Built 1996 Load: 32.4 t ADT: 150

MELMS RD

Good

Over: COON CREEK

3500 N 1775 E, DeKalb, IL

Built 2016 Load: 32.4 t ADT: 1,150

T.R.61BASE LINE RO

Good

Over: COON CREEK

3000N 1775E, DeKalb, IL

Built 2019 Load: 32.4 t ADT: 1,200

SCHAFER RD

Good

Over: TRIB. OF OWENS CREEK

2470N 450E, DeKalb, IL

Built 1993 Load: 32.4 t ADT: 475

WEST CLARE RD (TR9

Good

Over: OWENS CREEK

2660N 450E, DeKalb, IL

Built 1995 Load: 32.4 t ADT: 25

ESMOND ROAD

Good

Over: BR KILLBUCK CREEK

2675N 0040E, DeKalb, IL

Built 2008 Load: 32.4 t ADT: 400

NORTH GROVE ROAD

Good

Over: S BR KISHWAUKEE RIVE

2730 N 1080 E, DeKalb, IL

Built 2009 Load: 32.4 t ADT: 1,050

MOTEL ROAD

Good

Over: E BR KISHWAUKEE RV

2650N 1195E, DeKalb, IL

Built 2021 Load: 32.4 t ADT: 525

BASELINE ROAD

Good

Over: BR S BR KISHWAUKE RV

3000N 1365E, DeKalb, IL

Built 1991 Load: 32.4 t ADT: 1,850

BRICKVILLE RD

Good

Over: BLUE HERON CR

2610N 1320E, DeKalb, IL

Built 2006 Load: 32.4 t ADT: 750

RICH RD

Good

Over: BR OF OWENS CREEK

2350N 430E, DeKalb, IL

Built 1952 Load: 32.4 t ADT: 350

GURLER ROAD

Good

Over: BR S BR KISHWAUKEE

1800N 555E, DeKalb, IL

Built 1977 Load: 32.4 t ADT: 250

TOWER ROAD

Good

Over: BR. KILBUCK CREEK

1920N 100E, DeKalb, IL

Built 1990 Load: 32.4 t ADT: 25

QUINTO ROAD

Good

Over: BR E KILLBUCK CREEK

2125N 100E, DeKalb, IL

Built 2000 Load: 32.4 t ADT: 75

GURLER ROAD

Good

Over: SO BR KISHWAUKEE

1800N 835E, DeKalb, IL

Built 2011 Load: 32.4 t ADT: 450

MINNEGAN RD

Good

Over: S BR KISHWAUKEE RIV.

1400N , 585E, DeKalb, IL

Built 1999 Load: 32.4 t ADT: 25

Showing 16,351-16,400 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.