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 287

Good

Over: DRAINAGE DITCH

4 MI NW OF LONGVIEW, Champaign, IL

Built 1995 Load: 32.4 t ADT: 10

TR 99

Good

Over: DRAINAGE DITCH

2.2 MI E FLATVILLE, Champaign, IL

Built 1999 Load: 32.4 t ADT: 150

WITT PARK ST(6800)

Good

Over: DRAINAGE DITCH

NW SIDE OF SIDNEY, Champaign, IL

Built 1995 Load: 32.4 t ADT: 175

TR 18 A

Good

Over: DRAINAGE DITCH

SPRING LAKE(MAHOMET), Champaign, IL

Built 1995 Load: 32.4 t ADT: 325

TR 196

Good

Over: DRAINAGE DITCH

4 MI SW OF LUDLOW, Champaign, IL

Built 1995 Load: 32.4 t ADT: 50

TR 159

Good

Over: DRAINAGE DITCH

2.1 MI NW OF ROYAL, Champaign, IL

Built 1996 Load: 32.4 t ADT: 25

TR 41

Good

Over: DRAINAGE DITCH

2 MI S OF FOOSLAND, Champaign, IL

Built 1996 Load: 32.4 t ADT: 35

TR 125

Good

Over: STREAM

1.5 MI W OF MAHOMET, Champaign, IL

Built 1996 Load: 32.4 t ADT: 75

TR 85

Good

Over: DRAINAGE DITCH

4 MI S OF FISHER, Champaign, IL

Built 1996 Load: 32.4 t ADT: 75

TR 254

Good

Over: E BR EMBARRAS RIVER

3.4 MI NW LONGVIEW, Champaign, IL

Built 1996 Load: 32.4 t ADT: 25

TR 104

Good

Over: DRAINAGE DITCH

5 MI E OF MAHOMET, Champaign, IL

Built 1996 Load: 32.4 t ADT: 650

TR 47

Good

Over: E SALT FORK CREEK

2 MI NW OF GIFFORD, Champaign, IL

Built 1996 Load: 32.4 t ADT: 25

TR 266

Good

Over: STANTON SPEC DR DIT

3 MI NW ST JOSEPH, Champaign, IL

Built 1997 Load: 32.4 t ADT: 50

TR 230

Good

Over: DRAINAGE DITCH

3 MI NE OF PHILO, Champaign, IL

Built 1997 Load: 32.4 t ADT: 150

TR 16 A

Good

Over: DRAINAGE DITCH

2 MI SW MAHOMET, Champaign, IL

Built 1997 Load: 32.4 t ADT: 300

TR 156

Good

Over: DRAINAGE DITCH

1 MI W OF LEVERETT, Champaign, IL

Built 1998 Load: 32.4 t ADT: 100

TR 22

Good

Over: CAMP CREEK

1.2 MI SW SEYMOUR, Champaign, IL

Built 1998 Load: 32.4 t ADT: 50

TR 127

Good

Over: DRAINAGE DITCH

2 MI E MAHOMET, Champaign, IL

Built 1998 Load: 32.4 t ADT: 700

TR 31

Good

Over: DRAINAGE DITCH

1.5 MI W OF FOOSLAND, Champaign, IL

Built 1999 Load: 32.4 t ADT: 75

TR 94

Good

Over: DRAINAGE DITCH

2 MI W OF CHAMPAIGN, Champaign, IL

Built 1999 Load: 32.4 t ADT: 1,300

TR 307 A

Good

Over: HACKETT BRANCH

1 MI S OF PESOTUM, Champaign, IL

Built 2002 Load: 32.4 t ADT: 10

TR 254

Good

Over: LONG POINT SLOUGH

1 MI NW LONGVIEW, Champaign, IL

Built 2004 Load: 32.4 t ADT: 25

TR 113 B

Good

Over: FLATVILLE DR DITCH

1.8 MI SW FLATVILLE, Champaign, IL

Built 2000 Load: 32.4 t ADT: 50

TR 305

Good

Over: DRAINAGE DITCH

3 MI SE OF SADORUS, Champaign, IL

Built 2000 Load: 32.4 t ADT: 50

TR 43

Good

Over: DRAINAGE DITCH

2 MI NE OF FISHER, Champaign, IL

Built 1999 Load: 32.4 t ADT: 100

MULLIKIN DR

Good

Over: COPPER SLOUGH

1400 N, 750 E, Champaign, IL

Built 2001 Load: 32.4 t ADT: 1,250

TR 127

Good

Over: DRAINAGE DITCH

3 MI E OF MAHOMET, Champaign, IL

Built 2000 Load: 32.4 t ADT: 600

FAS 502 (CH 20)

Good

Over: DITCH

3 MI E OF LEVERETT, Champaign, IL

Built 2000 Load: 32.4 t ADT: 800

TR 67

Good

Over: DRAINAGE DITCH

6 MI SW OF FISHER, Champaign, IL

Built 2000 Load: 32.4 t ADT: 50

TR 275 B

Good

Over: DRAINAGE DITCH

3.5 MI S OF PHILO, Champaign, IL

Built 2004 Load: 32.4 t ADT: 50

TR 209

Good

Over: KANKAKEE DRAINAGE DI

2 MI SE OF SEYMOUR, Champaign, IL

Built 2000 Load: 32.4 t ADT: 150

TR 300

Good

Over: DRAINAGE DITCH

5 MI S OF GIFFORD, Champaign, IL

Built 2002 Load: 32.4 t ADT: 150

TR 47

Good

Over: DRAINAGE DITCH

3 MI NE OF GIFFORD, Champaign, IL

Built 2001 Load: 32.4 t ADT: 100

TR 272

Good

Over: DRAINAGE DITCH

3 MI E OF LUDLOW, Champaign, IL

Built 2001 Load: 32.4 t ADT: 150

TR 178

Good

Over: DRAINAGE DITCH

4 MI W OF LUDLOW, Champaign, IL

Built 2001 Load: 32.4 t ADT: 150

TR 234 A

Good

Over: STREAM

1.5 MI S OF LUDLOW, Champaign, IL

Built 2001 Load: 32.4 t ADT: 50

TR 113 B

Good

Over: DRAINAGE DITCH

2.1 MI SW THOMASBORO, Champaign, IL

Built 2001 Load: 32.4 t ADT: 50

TR 255A

Good

Over: DRAINAGE DITCH

2.0MI SOUTH SIDNEY, Champaign, IL

Built 2002 Load: 32.4 t ADT: 25

CH 14 & PED BR

Good

Over: HOMER LAKE

HOMER LAKE, Champaign, IL

Built 2002 Load: 32.4 t ADT: 950

CH 14

Good

Over: CONKEY BRANCH

HOMER LAKE, Champaign, IL

Built 2002 Load: 32.4 t ADT: 700

FAS 531(CH 18)

Good

Over: TWO MILE SLOUGH

3.4 MI SW OF SAVOY, Champaign, IL

Built 2002 Load: 32.4 t ADT: 2,800

FAS 502(CH 20)

Good

Over: UNION DRAINAGE DITCH

4.8 MI E LEVERETT, Champaign, IL

Built 2002 Load: 32.4 t ADT: 800

TR 146

Good

Over: UNNAMED STREAM

3.1MI NNE I-57&I-74, Champaign, IL

Built 2002 Load: 32.4 t ADT: 575

TR 35

Good

Over: UNNAMES STREAM

4.0MI NORTH RANTOUL, Champaign, IL

Built 2002 Load: 32.4 t ADT: 75

TR 55

Good

Over: LONE TREE CREEK

5.6 MI SW FISHER, Champaign, IL

Built 2002 Load: 32.4 t ADT: 25

TR 113 B

Good

Over: STREAM

1.9 MI SE FLATVILLE, Champaign, IL

Built 2002 Load: 32.4 t ADT: 50

TR 247 A

Good

Over: TWO MILE SLOUGH

3 MI NW OF TOLONO, Champaign, IL

Built 2002 Load: 32.4 t ADT: 50

TR 299

Good

Over: PESOTUM DRAINAGE DIT

4.3 MI W PESOTUM, Champaign, IL

Built 2002 Load: 32.4 t ADT: 25

TR 38

Good

Over: LONE TREE CREEK

1 MI E OF FOOSLAND, Champaign, IL

Built 2003 Load: 32.4 t ADT: 50

TR 163

Good

Over: STREAM

3 MI NE BONDVILLE, Champaign, IL

Built 2002 Load: 32.4 t ADT: 100

Showing 15,651-15,700 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.