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 239A

Good

Over: MONEY CREEK

5.0 MI SE TOWNADA, McLean, IL

Built 1983 Load: 32.4 t ADT: 175

TR 536

Good

Over: BRANCH SALT CREEK

4.8 MI NW BELLFLOWER, McLean, IL

Built 1930 Load: 32.4 t ADT: 25

TR 546

Good

Over: BRANCH SALT CREEK

4.0 MI NW BELLFLOWER, McLean, IL

Built 1978 Load: 32.4 t ADT: 75

TR545

Good

Over: BR SALT CREEK

4.8 MI WSW BELLFLOWE, McLean, IL

Built 1994 Load: 32.4 t ADT: 75

TR 451

Good

Over: WHITE STAR DRAIN

4.8 MI NW BELLFLOWER, McLean, IL

Built 1999 Load: 32.4 t ADT: 50

TR 475

Good

Over: MIDDLE BR EASTERBR.

3 MI NW BELLFLOWER, McLean, IL

Built 2005 Load: 32.4 t ADT: 75

FAS 1477 CH 40

Good

Over: Branch Salt Creek

2.8 mi WNW of Bellfl, McLean, IL

Built 2016 Load: 32.4 t ADT: 350

TR 451

Good

Over: Unnamed Waterway

4 MI S of Arrowsmith, McLean, IL

Built 2022 Load: 32.4 t ADT: 50

TR 138

Good

Over: DENMAN CREEK

3.0 MI NE CARLOCK, McLean, IL

Built 1989 Load: 32.4 t ADT: 50

FAS 472

Good

Over: DENMAN CREEK

3.0 MI NE CARLOCK, McLean, IL

Built 1995 Load: 32.4 t ADT: 450

TR 76

Good

Over: ROCK CREEK

1 MI W CARLOCK, McLean, IL

Built 1999 Load: 32.4 t ADT: 75

TR 29A

Good

Over: ROOKS CREEK TR 2

2.8 MI SSE WESTON, McLean, IL

Built 1983 Load: 32.4 t ADT: 75

TR 23A

Good

Over: ROOKS CREEK

1.5 MI SSE WESTON, McLean, IL

Built 1994 Load: 32.4 t ADT: 75

TR 498

Good

Over: BR OF ROOKS CREEK

3.5 MI WSW WESTON, McLean, IL

Built 1991 Load: 32.4 t ADT: 50

TR 548

Good

Over: ROOKS CREEK

3.5 MI SSE WESTON, McLean, IL

Built 1991 Load: 32.4 t ADT: 75

TR 43

Good

Over: TRIB OF ROOKS CRK

4.3 MI SSE WESTON, McLean, IL

Built 2001 Load: 32.4 t ADT: 25

HAMILTON RD FAU 63

Good

Over: LITTLE KICKAPOO CR

0.6 MI SE 150 & 55, McLean, IL

Built 1993 Load: 32.4 t ADT: 1,300

FAU6370 IRELANDGRO

Good

Over: 100YR FLOOD PLANE

1.0 MI E. 150 & 55, McLean, IL

Built 1991 Load: 32.4 t ADT: 3,800

FAU 6354

Good

Over: SUGAR CREEK

1.5 MI NE 9 & 55, McLean, IL

Built 1992 Load: 32.4 t ADT: 5,075

CLINTON ST FAU 640

Good

Over: SUGER CREEK

0.6 MI NE 150 & 51, McLean, IL

Built 1995 Load: 32.4 t ADT: 1,450

FAU 6416(HERSHEY R

Good

Over: SUGAR CREEKMAIN BRA

1.2 MI NNE 55 & 9, McLean, IL

Built 1997 Load: 32.4 t ADT: 8,850

WASHINGTONST.FAU63

Good

Over: SUGAR CREEK

0.5 MI SW 55 & 150, McLean, IL

Built 1996 Load: 32.4 t ADT: 5,350

FAU6358/EMERSON ST

Good

Over: SOUTHERN PACIFIC RR

0.5 MI NW 51 & 150, McLean, IL

Built 2003 Load: 32.4 t ADT: 4,550

FAU 6391

Good

Over: GOOSE CREEK

0.06 S BUTCHERS LANE, McLean, IL

Built 2008 Load: 32.4 t ADT: 5,450

STONEBROOK CT

Good

Over: LITTLE KICKAPOO CR

1200 FT N IREL GR RD, McLean, IL

Built 2001 Load: 32.4 t ADT: 225

WILLIS ST

Good

Over: KICKAPOO CR

WILLIS AT VORLEY ST, McLean, IL

Built 1979 Load: 32.4 t ADT: 625

BUCHANAN ST

Good

Over: KICKAPOO CR

0.4 MI NNE 136 & 51, McLean, IL

Built 1979 Load: 32.4 t ADT: 400

LINDEN ST

Good

Over: SUGARCREEK

1.3 MI NNE 51 & 150, McLean, IL

Built 1994 Load: 32.4 t ADT: 5,850

MS 6540(FRANKLIN S

Good

Over: SUGAR CREEK

0.7 MI NNE 51 & 150, McLean, IL

Built 2000 Load: 32.4 t ADT: 675

UNIVERSITY STREET

Good

Over: N BR. SUGAR CREEK

0.7 MI N 51 & 150, McLean, IL

Built 2004 Load: 32.4 t ADT: 725

APPLE ST

Good

Over: SUGAR CREEK

0.14 MI E US 51, McLean, IL

Built 2009 Load: 32.4 t ADT: 900

MS-6505 University

Good

Over: Sugar Creek

0.7 mi N of 50 & 150, McLean, IL

Built 2015 Load: 32.4 t ADT: 575

Broadway Ave.

Good

Over: Sugar Creek

240' S of Florance A, McLean, IL

Built 2012 Load: 32.4 t ADT: 425

FAI 74

Good

Over: DITCH

W OF CARLOCK, McLean, IL

Built 1966 Load: 32.4 t ADT: 28,400

TR 135

Good

Over: HALLS BRANCH

2 M W ATHENS, Menard, IL

Built 1988 Load: 32.4 t ADT: 225

TR 135

Good

Over: HALLS BRANCH TRIB

2.5 MI W ATHENS, Menard, IL

Built 1988 Load: 32.4 t ADT: 225

TR 27

Good

Over: CABINESS CRK TRIB.

2.3 MI W. GREENVIEW, Menard, IL

Built 1990 Load: 32.4 t ADT: 50

TR 11

Good

Over: UNNAMED BRANCH

1MI N E GREENVIEW, Menard, IL

Built 1991 Load: 32.4 t ADT: 200

TR 122

Good

Over: TOWN BRANCH

1.0 MI W ATHENS, Menard, IL

Built 1999 Load: 32.4 t ADT: 200

TR 9

Good

Over: LATIMORE CR

5.0 MI E OAKFORD, Menard, IL

Built 2001 Load: 32.4 t ADT: 50

FAS 575

Good

Over: CONCORD CREEK

4 MI N PETERSBURG, Menard, IL

Built 2006 Load: 32.4 t ADT: 250

FAS 575

Good

Over: LATIMORE CR

5.5 M N PTRSBRG, Menard, IL

Built 2007 Load: 32.4 t ADT: 225

CH 10

Good

Over: BRANCH PIKE CR

7 MI SE GREENVIEW, Menard, IL

Built 2003 Load: 32.4 t ADT: 125

TR 79

Good

Over: LITTLE GROVE CR

3.5 M W PETRSBRG, Menard, IL

Built 2003 Load: 32.4 t ADT: 75

TR 152

Good

Over: ALLENS GROVE CR

2 M NE GREENVIEW, Menard, IL

Built 2008 Load: 32.4 t ADT: 75

TR 34

Good

Over: TAR CREEK

3 M E OAKFORD, Menard, IL

Built 2009 Load: 32.4 t ADT: 50

TR 166

Good

Over: PIKE CREEK

3 M NE GREENVIEW, Menard, IL

Built 2010 Load: 32.4 t ADT: 75

TR 43

Good

Over: GROVE CREEK

1 MILE SSE GREENVIEW, Menard, IL

Built 2010 Load: 32.4 t ADT: 50

TR 60

Good

Over: ROCK CREEK

6.5 M S PETERSBURG, Menard, IL

Built 2010 Load: 32.4 t ADT: 75

FAS 573 (CH 1)

Good

Over: Trib Allens Grove Di

3.5 M E GREENVIEW, Menard, IL

Built 2012 Load: 32.4 t ADT: 325

Showing 19,551-19,600 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.