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 93

Good

Over: GRINDSTONE CREEK

1.5 MI N MENDON, Adams, IL

Built 1982 Load: 32.4 t ADT: 75

TR 229

Good

Over: BR OF ROCK CREEK

4 M SE URSA, Adams, IL

Built 2011 Load: 32.4 t ADT: 125

TR 21

Good

Over: WHITE OAK CR

1 M WNW LIMA, Adams, IL

Built 2012 Load: 32.4 t ADT: 50

TR-351

Good

Over: Little Mill Creek

0.02 mi W TR 152, Adams, IL

Built 2015 Load: 32.4 t ADT: 250

SO 28TH ST

Good

Over: CURTIS CREEK

ON SO 28TH E OF MON, Adams, IL

Built 1972 Load: 32.4 t ADT: 1,100

MS 1000

Good

Over: CURTIS CREEK

1.25 MI SO QUINCY, Adams, IL

Built 1976 Load: 32.4 t ADT: 50

NORTH 5TH STREET

Good

Over: CEDAR CREEK

N 5TH AT CEDAR CRK, Adams, IL

Built 2011 Load: 32.4 t ADT: 700

PARK ROAD

Good

Over: FALL CREEK

ENT FALL CR REST ARE, Adams, IL

Built 1980 Load: 32.4 t ADT: 100

TR 59-COLEMAN RD

Good

Over: JACKSON CREEK

1/4 MI NE OF TAMMS, Alexander, IL

Built 2001 Load: 32.4 t ADT: 10

OLD DELTA RD

Good

Over: HARTLINE CREEK

1.5MI W IL 127, Alexander, IL

Built 1999 Load: 32.4 t ADT: 25

OLD DELTA RD

Good

Over: SEXTON CREEK

1.0 MI N OF CH 4, Alexander, IL

Built 2008 Load: 32.4 t ADT: 25

OLD DELTA RD

Good

Over: SEXTON CREEK

1.2MI N GRAPEVINE TR, Alexander, IL

Built 2015 Load: 32.4 t ADT: 25

WHITNEY HOLLOW RD

Good

Over: COOPER CREEK

0.10 MI S OF TR 3, Alexander, IL

Built 2010 Load: 32.4 t ADT: 25

CH 18/FAS 777

Good

Over: SHOAL CREEK

8M N GREENVILLE, Bond, IL

Built 1938 Load: 32.4 t ADT: 500

CH 11

Good

Over: TRIB TO SHOAL CREEK

3.5 MI E OPOCAHONTAS, Bond, IL

Built 1982 Load: 32.4 t ADT: 125

FAS 1746

Good

Over: KINGSBURY CREEK

1.3 MI. N GREENVILLE, Bond, IL

Built 1989 Load: 32.4 t ADT: 1,400

CH 20/FAS 781

Good

Over: TRIB OF SHOAL CREEK

POCAHONTAS, Bond, IL

Built 2004 Load: 32.4 t ADT: 1,700

CH 19 JAMESTOWN RD

Good

Over: LOCUST FORK CK

2M S PIERRON, Bond, IL

Built 2011 Load: 32.4 t ADT: 800

CH18/FAS 777

Good

Over: TRIB TO SHOAL CREEK

5.5M N OF GREENVILLE, Bond, IL

Built 2005 Load: 32.4 t ADT: 200

CH 2/KEYESPORT RD

Good

Over: TRIB TO CARLYLE LAKE

1.0M W KEYESPORT, Bond, IL

Built 2011 Load: 32.4 t ADT: 850

FAS779 Pokey Rd CH

Good

Over: Trib. to Shoal Ck

1.5 Mi N Pocahontas, Bond, IL

Built 2013 Load: 32.4 t ADT: 1,300

FAS-777 (NewDougRd

Good

Over: Dry Fork Creek

2 Mi S of Sorento, Bond, IL

Built 2017 Load: 32.4 t ADT: 525

TR 60

Good

Over: LOCUST CK

1.25M S PIERRON, Bond, IL

Built 2001 Load: 32.4 t ADT: 50

TR 117

Good

Over: TRIB KINGSBURY CK

IMI N GRENVILLE, Bond, IL

Built 1993 Load: 32.4 t ADT: 225

TR 111

Good

Over: TRIB TO INDIAN CREEK

3.25M NW GREENVILLE, Bond, IL

Built 1995 Load: 32.4 t ADT: 50

TR 96A

Good

Over: INDIAN CREEK

3.5M W GREENVILLE, Bond, IL

Built 1995 Load: 32.4 t ADT: 75

TR 170

Good

Over: BEAVER CREEK

1MI. S. GREENVILLE, Bond, IL

Built 1998 Load: 32.4 t ADT: 10

TR 185

Good

Over: TRIB TO BEAVER CRK

1 M E OF CH 17, Bond, IL

Built 2010 Load: 32.4 t ADT: 150

TR 140

Good

Over: BRANCH OF SHOAL CR

3 MI N OF GREENVILLE, Bond, IL

Built 1985 Load: 32.4 t ADT: 200

TR 75B

Good

Over: TRIB KINGSBURY RESEV

4 MI NE GREENVILLE, Bond, IL

Built 1993 Load: 32.4 t ADT: 150

TR 207

Good

Over: LITTLE BEAVER CREEK

3.5M SO.OFGREENVILLE, Bond, IL

Built 1983 Load: 32.4 t ADT: 25

TR 136

Good

Over: BEAVER CREEK

5.5 MI SW GREENVILLE, Bond, IL

Built 1990 Load: 32.4 t ADT: 10

TR 214

Good

Over: TRIB OF KINGSBURY BR

2.75 NW MULBERRY GRO, Bond, IL

Built 1977 Load: 32.4 t ADT: 75

TR 214

Good

Over: TRIB TO KINGSBURY BR

2.5MI NE SMITHBORO, Bond, IL

Built 1991 Load: 32.4 t ADT: 75

TR 24

Good

Over: LITTLE DRY FORK

1.5MI NW OLD RIPLEY, Bond, IL

Built 1990 Load: 32.4 t ADT: 50

TR 8

Good

Over: LITTLE SILVER CREEK

2.5M W OLD RIPLEY, Bond, IL

Built 2001 Load: 32.4 t ADT: 225

TR 56A

Good

Over: MYLEN BR OF SHOAL CR

2M NE OF OLD RIPLEY, Bond, IL

Built 2005 Load: 32.4 t ADT: 25

TR 61

Good

Over: LITTLE DRYFORK

4.5M NW OLD RIPLEY, Bond, IL

Built 1981 Load: 32.4 t ADT: 75

TR 63

Good

Over: SHOAL CREEK

2.5 MI SE SORENTO, Bond, IL

Built 1988 Load: 32.4 t ADT: 125

TR 10 ELEVATOR RD

Good

Over: DRY FORK CREEK

2 MI W SORENTO, Bond, IL

Built 2007 Load: 32.4 t ADT: 50

TR 184

Good

Over: LT BEAVER CREEK

5 MI SE GREENVILLE, Bond, IL

Built 1988 Load: 32.4 t ADT: 50

TR 233

Good

Over: FLAT BRANCH

6MIS/2MIE OF GRNVLLE, Bond, IL

Built 1998 Load: 32.4 t ADT: 50

TR 245B

Good

Over: BR OF BEAVER CREEK

1MI E BEAVERCREEK, Bond, IL

Built 2004 Load: 32.4 t ADT: 75

STATE STREET

Good

Over: KISHWAUKEE RIVER

DOWNTOWN BELVIDERE, Boone, IL

Built 2001 Load: 32.4 t ADT: 8,800

ROCKTON RD

Good

Over: N KINNIKINNICK CREEK

6.5 MI NE ROSCOE, Boone, IL

Built 1973 Load: 32.4 t ADT: 250

CRAWFORD ROAD

Good

Over: SPRING CREEK

6.0 MI SE BELVIDERE, Boone, IL

Built 1977 Load: 32.4 t ADT: 250

BELOIT RD

Good

Over: BEAVER CREEK

3.5 MI NW BELVIDERE, Boone, IL

Built 1978 Load: 32.4 t ADT: 3,800

FRUIT FARM ROAD

Good

Over: MOSQUITO CREEK

3.5 MI SE BELVIDERE, Boone, IL

Built 1982 Load: 32.4 t ADT: 25

CARLSON RD

Good

Over: SPRING CREEK

3.0 MI S GARDEN PRAI, Boone, IL

Built 1984 Load: 32.4 t ADT: 325

REEDS CROSSING ROA

Good

Over: MOSQUITO CREEK

4.0 MI SE BELVIDERE, Boone, IL

Built 1983 Load: 32.4 t ADT: 200

Showing 15,201-15,250 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.