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 190

Poor

Over: BUCKHART CREEK

3MI W STONINGTON, Christian, IL

Built 1900 Load: 13.6 t ADT: 20

TR 434

Poor

Over: SUGAR CR

2.5 MI N. STOCKLAND, Iroquois, IL

Built 1921 Load: 13.6 t ADT: 50

SBI 146

Poor

Over: DUTCHMAN CREEK

1.5 MI E OF ILL 37, Johnson, IL

Built 1930 Load: 13.6 t ADT: 200

MELUGINS GR-TR238

Poor

Over: DRAINAGE DITCH

1.0 MI W IL 251, Lee, IL

Built 1938 Load: 13.6 t ADT: 25

TR 408

Poor

Over: CREEK

0.5 MI NE NOKOMIS, Montgomery, IL

Built 1900 Load: 13.6 t ADT: 150

CH 3

Poor

Over: LITTLE CREEK

CH 3 IN DONGOLA, Union, IL

Built 1935 Load: 13.6 t ADT: 600

CH 30 / SBI 15

Poor

Over: STREAM

4 MI W EDWARDS CO LN, Wayne, IL

Built 1921 Load: 13.6 t ADT: 10

SECOND STREET

Poor

Over: HENNEPIN CANAL FEEDR

E EDGE OF ROCK FALLS, Whiteside, IL

Built 1976 Load: 13.6 t ADT: 1,450

MACGREGOR RD

Poor

Over: FIDDYMENT CREEK

300 FT N MCCAMERON, Will, IL

Built 1960 Load: 13.6 t ADT: 1,650

SHEPLEY RD

Poor

Over: DU PAGE RIV

0.5 MI SE RIVER RD, Will, IL

Built 1980 Load: 13.6 t ADT: 1,550

FAS 1746 (CH 1)

Poor

Over: BURLINGTON NORTH R R

3.75 M N GREENVILLE, Bond, IL

Built 1907 Load: 13.9 t ADT: 775

TR 84A

Poor

Over: LITTLE MISSOURI

8.0 NW MT STERLING, Brown, IL

Built 1900 Load: 13.9 t ADT: 75

TR 124

Poor

Over: LITTLE INDIAN

3 MI SW PHILADELPHIA, Cass, IL

Built 1966 Load: 13.9 t ADT: 75

TR-233

Poor

Over: NO BUSINESS CREEK

S RICHWOODS, Crawford, IL

Built 1909 Load: 13.9 t ADT: 25

TR 64

Poor

Over: CATFISH CREEK

1.5 MI W RED 1.25 N, Edgar, IL

Built 1967 Load: 13.9 t ADT: 50

TR 118 A

Poor

Over: STREAM

1.5 MI NW BELLRIDGE, Edgar, IL

Built 1900 Load: 13.9 t ADT: 50

TR-177A

Poor

Over: CREEK

2.5 MI NE WILLOW HIL, Jasper, IL

Built 1909 Load: 13.9 t ADT: 50

FR 870

Poor

Over: WAGON CREEK

.5 MILES WEST OF CR#18, Johnson, IL

Built 1967 Load: 13.9 t ADT: 29

TR 121

Poor

Over: FIVE MILE CREEK

2720 E, 1900 N, Livingston, IL

Built 1950 Load: 13.9 t ADT: 10

FAS 732

Poor

Over: OTTER LAKE

6 MI. W. GIRARD, Macoupin, IL

Built 1968 Load: 13.9 t ADT: 950

FIRST AVENUE

Poor

Over: KYTE CREEK

ROCHELLE 1ST. AVE., Ogle, IL

Built 1978 Load: 13.9 t ADT: 1,550

TR 70A

Poor

Over: CEDAR CR

NE-12-T11NR3W, Warren, IL

Built 1900 Load: 13.9 t ADT: 20

189TH STREET

Poor

Over: LANSING DRN DITCH

50FT W BURNHAM AVE, Cook, IL

Built 1970 Load: 14.3 t ADT: 700

Old US 34

Poor

Over: OLD TOM CREEK

.5 MI E ILL 94 (N), Henderson, IL

Built 1922 Load: 14.3 t ADT: 200

TR 282

Poor

Over: TRIB SUGAR CREEK

1.5 MI SE WATSEKA, Iroquois, IL

Built 1910 Load: 14.3 t ADT: 75

TR-211

Poor

Over: BRUSH CREEK

0.5 MI SE NEWTON, Jasper, IL

Built 1909 Load: 14.3 t ADT: 250

HARLEY RD

Poor

Over: UP RR

1.3 MI. S OF IL-38, Kane, IL

Built 1997 Load: 14.3 t ADT: 1,150

WASHINGTON ST

Poor

Over: GUM CREEK

WASH ST OV GUM CR, LaSalle, IL

Built 1920 Load: 14.3 t ADT: 175

TOWN HALL RD-TR230

Poor

Over: DRAINAGE DITCH

1.5 MI W IL 251, Lee, IL

Built 1938 Load: 14.3 t ADT: 10

TR 172

Poor

Over: PENN CENTRAL RR

1.0 M S ILL 140, Madison, IL

Built 1901 Load: 14.3 t ADT: 350

MURRAY ROAD

Poor

Over: SLOUGH CREEK

.15 MI N NELSON RD, McHenry, IL

Built 1968 Load: 14.3 t ADT: 225

CREEK RD

Poor

Over: KICKAPOO CREEK TRIB.

NW-QTR-13-LIMESTONE, Peoria, IL

Built 1991 Load: 14.3 t ADT: 1,900

KILBUCK BLUFF FP

Poor

Over: BR KILBUCK CR

BY KILBUCK CREEK, Winnebago, IL

Built 1926 Load: 14.3 t ADT: 475

TR 224

Poor

Over: MIDDLE CRK.

4 MI N NEWMANSVILLE, Cass, IL

Built 1963 Load: 14.6 t ADT: 75

TR 92

Poor

Over: MILLER BRANCH

0.40 mi S FAS 732(CH 10), Christian, IL

Built 1921 Load: 14.6 t ADT: 100

TR 359

Poor

Over: STREAM

3 MI ENE WEST UNION, Clark, IL

Built 1958 Load: 14.6 t ADT: 75

QUENTIN RD

Poor

Over: BR OF SALT CREEK

0.2 M N DUNDEE P18, Cook, IL

Built 1927 Load: 14.6 t ADT: 18,200

TR 91 PATTON

Poor

Over: WALL TOWN DR DITCH

1540E,500N, Ford, IL

Built 1974 Load: 14.6 t ADT: 375

TR 11 MONA

Poor

Over: KELLY CREEK

1560E 3400N, Ford, IL

Built 1973 Load: 14.6 t ADT: 75

ILL 34

Poor

Over: HALLTOWN CREEK

1 M.SE OF T-SONVILLE, Franklin, IL

Built 1929 Load: 14.6 t ADT: 2,100

SBI 13 (UNMARKED)

Poor

Over: STREAM

1 MI W OF ILL 1, Gallatin, IL

Built 1920 Load: 14.6 t ADT: 25

BUNKER HILL ROAD

Poor

Over: DRAINAGE DITCH

1.8 MI WEST OF IL 23, McHenry, IL

Built 1970 Load: 14.6 t ADT: 100

FAU-165 (W Solon R

Poor

Over: N Br Nippersink Cr

0.5M E IL-31, McHenry, IL

Built 1983 Load: 14.6 t ADT: 325

TR 78A(OLD SBI 147

Poor

Over: HODGES BAYOU

0.4 MI W ILL 37, Pulaski, IL

Built 1929 Load: 14.6 t ADT: 75

COUNTY HWY 28

Poor

Over: HORSE CREEK

2.0 MI S PAWNEE, Sangamon, IL

Built 1957 Load: 14.6 t ADT: 375

TR 360

Poor

Over: E. BUREAU CREEK

1.5 MI. W. ARLINGTON, Bureau, IL

Built 1954 Load: 14.9 t ADT: 100

TR 329

Poor

Over: SPOON RIVER EAST FOR

1 MI SE OF NEPONSET, Bureau, IL

Built 1959 Load: 14.9 t ADT: 25

ATLAS ST(MS 8350)

Poor

Over: STREAM

SE CORNER CHANUTE, Champaign, IL

Built 1900 Load: 14.9 t ADT: 50

TR 106

Poor

Over: MILLER BRANCH

5MI E MORRISONVILLE, Christian, IL

Built 1914 Load: 14.9 t ADT: 50

TR 47

Poor

Over: WEST FORK MAZON R

2085 E, 2700 N, Livingston, IL

Built 1920 Load: 14.9 t ADT: 50

Showing 25,901-25,950 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.