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 352

Good

Over: BRUSH CREEK

2 MI N HOLLOWAYVILLE, Bureau, IL

Built 2005 Load: 32.4 t ADT: 100

TR 304-A

Good

Over: BRUSH CREEK

3 MI. W. OF DEPUE, Bureau, IL

Built 1995 Load: 32.4 t ADT: 50

TOWNSHIP ROAD 375

Good

Over: CROW CREEK

1 MI W OF WHITEFIELD, Bureau, IL

Built 1979 Load: 32.4 t ADT: 25

TR 3

Good

Over: SCHOLES CREEK

T13N-R9E-4PM SEC 6, Bureau, IL

Built 2015 Load: 32.4 t ADT: 75

TR 215

Good

Over: WEST BUREAU CREEK

2.5 MI N OF WYANET, Bureau, IL

Built 1998 Load: 32.4 t ADT: 75

TR 271A

Good

Over: W BUREAU CREEK

0.5 E WYANET, Bureau, IL

Built 2011 Load: 32.4 t ADT: 300

TOWNSHIP ROAD 37A

Good

Over: BUREAU CREEK

1 MI N OF LAMOILLE, Bureau, IL

Built 1983 Load: 32.4 t ADT: 50

TR 338

Good

Over: BRANCH BUREAU CREEK

2 MI NW OF LAMOILLE, Bureau, IL

Built 1988 Load: 32.4 t ADT: 50

TR 328

Good

Over: BR OF BUREAU CREEK

1.5 M N OF VAN ORIN, Bureau, IL

Built 1985 Load: 32.4 t ADT: 75

TR 21A

Good

Over: BUREAU CREEK BRANCH

2 MI NW OF VAN ORIN, Bureau, IL

Built 1987 Load: 32.4 t ADT: 50

TR 320

Good

Over: BUREAU CREEK BRANCH

1 MI W OF VAN ORIN, Bureau, IL

Built 2000 Load: 32.4 t ADT: 50

TR 306 - 2400E

Good

Over: TRIB. MASTERS CREEK

2 MI NW OF VAN ORIN, Bureau, IL

Built 1994 Load: 32.4 t ADT: 50

TR 21A

Good

Over: BUREAU CREEK BRANCH

2 MI NW OF LA MOILLE, Bureau, IL

Built 2003 Load: 32.4 t ADT: 50

TR 87

Good

Over: PIKE CREEK

1 MI S OF LA MOILLE, Bureau, IL

Built 2006 Load: 32.4 t ADT: 25

TR 21A

Good

Over: BRANCH OF BUREAU CR

1 MILE NE VAN ORIN, Bureau, IL

Built 2012 Load: 32.4 t ADT: 50

TR 96A

Good

Over: COAL CREEK

1 MI. SW. OF BUDA, Bureau, IL

Built 2000 Load: 32.4 t ADT: 50

TOWNSHIP ROAD 327

Good

Over: COAL CREEK

2 MI S OF BUDA, Bureau, IL

Built 2006 Load: 32.4 t ADT: 75

TOWNSHIP ROAD 139

Good

Over: W. BUREAU CREEK

5 M NW OF PRINCETON, Bureau, IL

Built 1983 Load: 32.4 t ADT: 125

TR 109

Good

Over: W BUREAU CREEK

6.5 M SE OF WALNUT, Bureau, IL

Built 1984 Load: 32.4 t ADT: 35

TOWNSHIP ROAD 182

Good

Over: W BUREAU CREEK

4 MI N OF WYANET, Bureau, IL

Built 1987 Load: 32.4 t ADT: 75

TOWNSHIP ROAD 177

Good

Over: W BUREAU CREEK

4.5 M N OF WYANET, Bureau, IL

Built 1987 Load: 32.4 t ADT: 50

TR 109

Good

Over: West Bureau Creek

7 Mi NW Princeton, Bureau, IL

Built 2013 Load: 32.4 t ADT: 150

FAS 1220/CH 12-220

Good

Over: BR. W. BUREAU CREEK

7 MI E OF MANLIUS, Bureau, IL

Built 1994 Load: 32.4 t ADT: 300

OAK STREET

Good

Over: HICKORY CREEK

MANLIUS, Bureau, IL

Built 2001 Load: 32.4 t ADT: 100

Epperson Road

Good

Over: EPPERSON RUN

W EDGE OF PRINCETON, Bureau, IL

Built 2020 Load: 32.4 t ADT: 550

MS-6050A (Main St)

Good

Over: Walnut Ditch

SW EDGE OF WALNUT, Bureau, IL

Built 2018 Load: 32.4 t ADT: 825

IL 100

Good

Over: MCCAULEY RD CREEK

1 MILE SO OF MICHAEL, Calhoun, IL

Built 2002 Load: 32.4 t ADT: 1,750

TR 27

Good

Over: WEST PANTHER CREEK

.7 MI E IL RT 96, Calhoun, IL

Built 1985 Load: 32.4 t ADT: 50

FAS 755

Good

Over: MCNABB CREEK

4.7 MILES S. HAMBURG, Calhoun, IL

Built 1991 Load: 32.4 t ADT: 225

TR 19B

Good

Over: BELLEVIEW HOLLOW CK

1 1/2 MI W HILLCREST, Calhoun, IL

Built 1995 Load: 32.4 t ADT: 275

TR 13

Good

Over: BAY CK

2MI W ILL 96, Calhoun, IL

Built 1999 Load: 32.4 t ADT: 75

TR 49

Good

Over: JUG HOLLOW CREEL

.3 MILE E. FAS 755, Calhoun, IL

Built 1997 Load: 32.4 t ADT: 50

TR 5

Good

Over: HOWELL HOLLOW CK

2.5MI N OF BELLEVIEW, Calhoun, IL

Built 1999 Load: 32.4 t ADT: 175

TR 27

Good

Over: WEST PANTHER CK

6 MI. NW KAMPSVILLE, Calhoun, IL

Built 1996 Load: 32.4 t ADT: 25

TR 15 WILCAT HOLLO

Good

Over: WILDCAT CREEK

1 MI. E IL 96, Calhoun, IL

Built 2002 Load: 32.4 t ADT: 75

TR 15 WILDCAT HOLL

Good

Over: WILDCAT CREEK

.73 MI E IL 96, Calhoun, IL

Built 2006 Load: 32.4 t ADT: 75

TR 19B

Good

Over: SILVER CREEK

2.2 M NW KAMPSVILLE, Calhoun, IL

Built 2007 Load: 32.4 t ADT: 75

TR 88

Good

Over: METZ CREEK

1.5 M W BRUSSELS, Calhoun, IL

Built 2009 Load: 32.4 t ADT: 25

TR 2 PLSNT HILL AC

Good

Over: SNY DRAINAGE CHANNEL

.01 NE IOWA CUTOFF, Calhoun, IL

Built 2006 Load: 32.4 t ADT: 75

TR 21 PLEASANT DAL

Good

Over: EAST PANTHER CR. BR.

4.9MI NW KAMPSVILLE, Calhoun, IL

Built 2008 Load: 32.4 t ADT: 75

TR 90

Good

Over: SIMON CR

7.6 MI S OF HAMBURG, Calhoun, IL

Built 2011 Load: 32.4 t ADT: 175

TR 90

Good

Over: KINTOWN CREEK

3 MI W HARDIN, Calhoun, IL

Built 2012 Load: 32.4 t ADT: 175

TR 105

Good

Over: NOLTE CREEK

1 MI W DEERPLAIN, Calhoun, IL

Built 2011 Load: 32.4 t ADT: 150

TR 30

Good

Over: Crooked Creek

.5 mi e il 96, Calhoun, IL

Built 2013 Load: 32.4 t ADT: 25

TR 15

Good

Over: East Panther Creek

5.5 Mi NW Kampsville, Calhoun, IL

Built 2015 Load: 32.4 t ADT: 50

TR 90

Good

Over: Salt Spring Creek

4.5 Mi SW of Hardin, Calhoun, IL

Built 2014 Load: 32.4 t ADT: 225

TR 76

Good

Over: Green Bay Hollow Crk

1 MI. S. of Meppen, Calhoun, IL

Built 2018 Load: 32.4 t ADT: 125

TR 90

Good

Over: EILERMAN CREEK

2.5 MI N BATCHTOWN, Calhoun, IL

Built 2012 Load: 32.4 t ADT: 225

TR 96A

Good

Over: Nolte Creek

2 Mi SE of Brussels, Calhoun, IL

Built 2014 Load: 32.4 t ADT: 25

TR 17

Good

Over: Belleview Creek

3 Mi NE of Belleview, Calhoun, IL

Built 2019 Load: 32.4 t ADT: 25

Showing 15,351-15,400 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.

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