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 279A

Good

Over: LITTLE SALINE RIVER

3 MI S CARRIER MILLS, Saline, IL

Built 1985 Load: 32.4 t ADT: 175

FAS 902

Good

Over: HORSESHOE CREEK

0.75 MI S CH 17, Saline, IL

Built 1985 Load: 32.4 t ADT: 350

TR 261

Good

Over: TRIB TO VALLEY CREEK

0.7 MI NW SOMERSET, Saline, IL

Built 1985 Load: 32.4 t ADT: 25

TR 91

Good

Over: BR OF RECTOR CREEK

0.75MI N OF ELDORADO, Saline, IL

Built 1984 Load: 32.4 t ADT: 400

TR 35

Good

Over: MIDFORK-SALINE RIVER

0.2 MI W IL 34, Saline, IL

Built 1988 Load: 32.4 t ADT: 150

CH 1

Good

Over: LONG BRANCH

0.5 MI S COUNTY LINE, Saline, IL

Built 1988 Load: 32.4 t ADT: 50

TR 246

Good

Over: LONG BRANCH

1.0MI S HAMILTON CO, Saline, IL

Built 1989 Load: 32.4 t ADT: 25

TR 67

Good

Over: DRAINAGE DITCH

0.02 MI E OF ILL 142, Saline, IL

Built 1989 Load: 32.4 t ADT: 50

CH 34

Good

Over: M FORK SALINE RIVER

1 MI S OF GALATIA, Saline, IL

Built 1990 Load: 32.4 t ADT: 200

TR 299

Good

Over: STREAM

0.5 MI E IL 34, Saline, IL

Built 1989 Load: 32.4 t ADT: 50

CH 32

Good

Over: ROCKY BRANCH

2.1 MI SO OF ILL 13, Saline, IL

Built 1990 Load: 32.4 t ADT: 75

TR 111

Good

Over: TRIB M.F. SALINE RIV

1 MI SW OF RALEIGH, Saline, IL

Built 1991 Load: 32.4 t ADT: 25

TR 152

Good

Over: LONG BRANCH

0.3 MI S HAMILTON CO, Saline, IL

Built 1991 Load: 32.4 t ADT: 25

CH 1

Good

Over: STREAM

1.9 MI N RALEIGH, Saline, IL

Built 1991 Load: 32.4 t ADT: 450

CH 5

Good

Over: SPRINGVALLEY CR TRIB

0.5 MI W SOMERSET, Saline, IL

Built 1991 Load: 32.4 t ADT: 300

TR 35

Good

Over: STREAM

0.1 MI W IL 34, Saline, IL

Built 1992 Load: 32.4 t ADT: 150

TR 33

Good

Over: BRUSH CREEK

0.3 MI E TEXAS CITY, Saline, IL

Built 1993 Load: 32.4 t ADT: 10

TR 246

Good

Over: RECTOR CREEK

0.6 MI S HAMILTON CO, Saline, IL

Built 1994 Load: 32.4 t ADT: 25

TR 272A

Good

Over: DRAINAGE DITCH

1.7 MI S US 45, Saline, IL

Built 1993 Load: 32.4 t ADT: 25

CH 10

Good

Over: TRIB TO MIDDLE FORK

1 MI E IL 34, Saline, IL

Built 1997 Load: 32.4 t ADT: 75

TR 1

Good

Over: LONG BRANCH CREEK

1.5 W OF CORNERVILLE, Saline, IL

Built 1996 Load: 32.4 t ADT: 25

TR 79A-GOSHEN TRAI

Good

Over: TRIB TO INDIAN CREEK

1.1 MI W IL 142, Saline, IL

Built 1996 Load: 32.4 t ADT: 25

TR 143-AIR SHAFT R

Good

Over: STREAM

0.25 MI S US 45, Saline, IL

Built 1995 Load: 32.4 t ADT: 125

CH 10

Good

Over: STREAM

0.4 MI NE IL 34, Saline, IL

Built 1993 Load: 32.4 t ADT: 50

FAS 902 (FH 20)

Good

Over: EAGLE CREEK

5.1 M SW EQUALITY, Saline, IL

Built 1996 Load: 32.4 t ADT: 250

TR 142

Good

Over: HARRISBURG LAKE

1 MI E GALATIA, Saline, IL

Built 1995 Load: 32.4 t ADT: 275

CH 12-RHINE ROAD

Good

Over: DRAINAGE DITCH

3 MI NE RALEIGH, Saline, IL

Built 1999 Load: 32.4 t ADT: 50

CH 4-CEDAR POINT R

Good

Over: HARRISBURG LAKE

1.5 MI NE GALATIA, Saline, IL

Built 1998 Load: 32.4 t ADT: 225

TR 13-GRUMLEY RD

Good

Over: TRIB N FORK SALINE R

1.5 MI N TEXAS CITY, Saline, IL

Built 1997 Load: 32.4 t ADT: 25

TR 51-GARNER ROAD

Good

Over: BRUSH CREEK

1.2 MI SW TEXAS CITY, Saline, IL

Built 1998 Load: 32.4 t ADT: 10

TR 267JENNY RIDGE

Good

Over: DRAINAGE DITCH

2 MI SE CARRIERMILLS, Saline, IL

Built 1998 Load: 32.4 t ADT: 100

TR 48

Good

Over: STREAM

0.9 MI S HAMILTON CO, Saline, IL

Built 2000 Load: 32.4 t ADT: 75

TR 31

Good

Over: DRAINAGE DITCH

1.75 MI W IL 142, Saline, IL

Built 2002 Load: 32.4 t ADT: 25

TR 119

Good

Over: WOLF CREEK

3.8 MI W ELDORADO, Saline, IL

Built 2006 Load: 32.4 t ADT: 200

TR 88

Good

Over: LITTLE SALINE R.

0.25 MI N POPE CO, Saline, IL

Built 2001 Load: 32.4 t ADT: 25

TR 80

Good

Over: STREAM

0.01 N OF OLD IL 13, Saline, IL

Built 2001 Load: 32.4 t ADT: 75

TR 3

Good

Over: RECTOR CREEK

HAMILTON CO LINE, Saline, IL

Built 2000 Load: 32.4 t ADT: 75

TR 4

Good

Over: HALLTOWN CREEK

FRANKLIN CO LINE, Saline, IL

Built 2003 Load: 32.4 t ADT: 50

TR 210 JAYBIRD RD

Good

Over: LONG BRANCH

1.0 MI S HAMILTON CO, Saline, IL

Built 2003 Load: 32.4 t ADT: 10

TR 163

Good

Over: DRAINAGE DITCH

1.4 MI N ILL 13, Saline, IL

Built 2006 Load: 32.4 t ADT: 225

FOWLER ROAD

Good

Over: INDIAN CREEK

0.7 MI E ILL 142, Saline, IL

Built 2010 Load: 32.4 t ADT: 10

AIRSHAFT RD

Good

Over: SPOIL BANK DITCH

0.8 MI S US 45, Saline, IL

Built 2008 Load: 32.4 t ADT: 125

FAS 900

Good

Over: S. FORK SALINE TRIB

3 MI W IL RT 34&145, Saline, IL

Built 2004 Load: 32.4 t ADT: 600

CH 18-FAS 900

Good

Over: S. FORK SALINE TRIB

3 MI W IL RT 34&145, Saline, IL

Built 2004 Load: 32.4 t ADT: 600

HORSESHOE RD

Good

Over: STREAM

4.2 MI E OF ILL 34, Saline, IL

Built 2011 Load: 32.4 t ADT: 175

TR 239

Good

Over: BRIER CREEK

2.7 M SE ILL 34, Saline, IL

Built 2013 Load: 32.4 t ADT: 50

MITCHELLSVILLE RD

Good

Over: BLACKMAN CREEK

0.9 MI E IL 34/145, Saline, IL

Built 2011 Load: 32.4 t ADT: 25

TR 9

Good

Over: Long Branch Creek

4 Mi NE Galatia, Saline, IL

Built 2013 Load: 32.4 t ADT: 10

WASSON RD

Good

Over: DRAINAGE DITCH

1.0 MI S US 45, Saline, IL

Built 2011 Load: 32.4 t ADT: 50

BUTLER RD

Good

Over: BRIER CREEK

1.3 M S US 45, Saline, IL

Built 2013 Load: 32.4 t ADT: 275

Showing 20,451-20,500 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.