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 85 NIKE RD

Good

Over: RICHLAND CR. TRIB.

1.5MI E OF HECKER, Monroe, IL

Built 2001 Load: 32.4 t ADT: 325

FAS 850

Good

Over: TRIB TO GERHART CR.

.1MI EAST WATERLOO, Monroe, IL

Built 2004 Load: 32.4 t ADT: 4,350

FAS 1857

Good

Over: MORRISON HOLLOW CK

1 MI NW FULTS, Monroe, IL

Built 2003 Load: 32.4 t ADT: 300

TR 51 GILMORE LK R

Good

Over: TRIB TO GERHARDT CK

3 MI E WATERLOO, Monroe, IL

Built 2002 Load: 32.4 t ADT: 250

TR 165/VV ROAD

Good

Over: PAINTCREEK TRIB

1MI EAST OF AMES, Monroe, IL

Built 2003 Load: 32.4 t ADT: 100

STEFFEN RD TR 40

Good

Over: MAEYSTOWN CREEK

2.5M WEST OF FULTS, Monroe, IL

Built 2005 Load: 32.4 t ADT: 10

TR 30A GARLEB RD

Good

Over: LONG SLASH CREEK

2MI WEST VALMEYER, Monroe, IL

Built 2004 Load: 32.4 t ADT: 25

FAS 1857

Good

Over: MONROE CREEK

2.7MI S VALMEYER, Monroe, IL

Built 2007 Load: 32.4 t ADT: 300

FAS 1857

Good

Over: FOUNTAIN CREEK

4M S OF COLUMBIA, Monroe, IL

Built 2008 Load: 32.4 t ADT: 2,550

CH5 FAS857

Good

Over: PAINT CREEK

.8 M S OF AMES, Monroe, IL

Built 2008 Load: 32.4 t ADT: 475

STRINGTOWN RD TR 3

Good

Over: FULTS CREEK

2MI SO OF FULTS, Monroe, IL

Built 2007 Load: 32.4 t ADT: 75

JJ ROAD/TR 77

Good

Over: FOUNTAIN CREEK

ROAD DISTRICT 7, Monroe, IL

Built 2009 Load: 32.4 t ADT: 100

TR 28

Good

Over: LONG SLASH CREEK

4 MI SW COLUMBIA, Monroe, IL

Built 2010 Load: 32.4 t ADT: 125

TR 43 Merrimac Rd

Good

Over: Long Slash Creek

4 MI N of Valmeyer, Monroe, IL

Built 2012 Load: 32.4 t ADT: 50

TR 74 Gall Rd

Good

Over: Andy's Run

1 Mi W. Waterloo, Monroe, IL

Built 2013 Load: 32.4 t ADT: 200

TR 32 Long Lake Rd

Good

Over: Maeystown Creek Trib

2 Mi SW Fults, Monroe, IL

Built 2014 Load: 32.4 t ADT: 25

TR-74 (Gall Road)

Good

Over: Andy's Run Tributary

4 Mi NW of Waterloo, Monroe, IL

Built 2017 Load: 32.4 t ADT: 125

VALMYER RD/FAU 930

Good

Over: CARR CREEK

.3 MI W ILL 158, Monroe, IL

Built 1980 Load: 32.4 t ADT: 2,250

GERDERN DRIVE

Good

Over: PALMER CREEK

CITY OF COLUMBIA, Monroe, IL

Built 1995 Load: 32.4 t ADT: 400

ADMIRAL WEINEL BLV

Good

Over: WILSON CREEK

CITY OF COLUMBIA, Monroe, IL

Built 1998 Load: 32.4 t ADT: 750

FAU 9314

Good

Over: FOUNTAIN CREEK

WATERLOO, Monroe, IL

Built 2002 Load: 32.4 t ADT: 1,900

MSS 1324 STOCKEL L

Good

Over: TRIB TO FOUNTAIN CR

STOCKEL LN, Monroe, IL

Built 2004 Load: 32.4 t ADT: 475

RUECK ROAD

Good

Over: UN-NAMED CREEK

NE SEC9 T1 R10W, Monroe, IL

Built 2000 Load: 32.4 t ADT: 1,850

ADMIRAL TROST

Good

Over: WILSON CREEK

ADM TROST W IL 3, Monroe, IL

Built 2005 Load: 32.4 t ADT: 1,150

FAU 9315 Moore St.

Good

Over: Fountain Ck Trib

Waterloo, Monroe, IL

Built 2007 Load: 32.4 t ADT: 2,000

FAU 8243

Good

Over: WALTON LAKE SPILLWAY

.5 M S LITCHFIELD, Montgomery, IL

Built 1980 Load: 32.4 t ADT: 650

FAS 732 CH 17

Good

Over: W BRANCH HORSE CREEK

3 M E FARMERSVILLE, Montgomery, IL

Built 1988 Load: 32.4 t ADT: 700

TR 257

Good

Over: STREAM

2 MI E SCHRAM CITY, Montgomery, IL

Built 1978 Load: 32.4 t ADT: 75

TR 239G

Good

Over: BRUSH CREEK

1.5 MI SW BUTLER, Montgomery, IL

Built 1980 Load: 32.4 t ADT: 50

TR 62

Good

Over: STREAM

3.5 MI SE LITCHFIELD, Montgomery, IL

Built 1980 Load: 32.4 t ADT: 50

TR 121

Good

Over: E. FORK SHOAL CREEK

1.5 MI SW NOKOMIS, Montgomery, IL

Built 1980 Load: 32.4 t ADT: 175

TR 6 - FAYETTE CO

Good

Over: DRY FORK

5.6 MI SE FILLMORE, Montgomery, IL

Built 1980 Load: 32.4 t ADT: 75

TR 50

Good

Over: SHOP CREEK

2 MI NE BARNETT, Montgomery, IL

Built 1982 Load: 32.4 t ADT: 175

TR 41

Good

Over: MACOUPIN CREEK

2.5 MI NW WAGGONER, Montgomery, IL

Built 1980 Load: 32.4 t ADT: 75

TR 329

Good

Over: STREAM

1.5 MI NE COFFEEN, Montgomery, IL

Built 1981 Load: 32.4 t ADT: 25

TR 139A

Good

Over: MIDDLE FK SHOAL CR

7 MI SE RAYMOND, Montgomery, IL

Built 1982 Load: 32.4 t ADT: 50

CH 22

Good

Over: HORSE CREEK

.1 M E THOMASVILLE, Montgomery, IL

Built 1988 Load: 32.4 t ADT: 50

TR 143

Good

Over: ELLIOTT CREEK

4 MI SE NOKOMIS, Montgomery, IL

Built 1984 Load: 32.4 t ADT: 150

TR 75

Good

Over: W FORK SHOAL CREEK

2 MI W HARVEL, Montgomery, IL

Built 1982 Load: 32.4 t ADT: 100

TR 304

Good

Over: MID FK SHOAL CREEK

6 MI NW NOKOMIS, Montgomery, IL

Built 1984 Load: 32.4 t ADT: 50

FAS 646

Good

Over: STREAM

7.0 E OF NOKOMIS, Montgomery, IL

Built 1986 Load: 32.4 t ADT: 500

TR 183

Good

Over: E FORK SHOAL CREEK

1.8 MI SE WITT, Montgomery, IL

Built 1986 Load: 32.4 t ADT: 25

TR 103

Good

Over: RAMSEY CREEK

4 MI SE OHLMAN, Montgomery, IL

Built 1985 Load: 32.4 t ADT: 50

TR 85

Good

Over: SHOAL CREEK

6 M NW WENONAH, Montgomery, IL

Built 1986 Load: 32.4 t ADT: 50

TR 36

Good

Over: HORSE CREEK

2.5 MI SW WAGGONER, Montgomery, IL

Built 1986 Load: 32.4 t ADT: 25

TR 317

Good

Over: EAST BRANCH

4MI SE LITCHFIELD, Montgomery, IL

Built 1998 Load: 32.4 t ADT: 250

TR-121

Good

Over: CREEK

6.8MI SE RAYMOND, Montgomery, IL

Built 1993 Load: 32.4 t ADT: 50

TR 458

Good

Over: RAMSEY CREEK

7.2 MI E WENONAH, Montgomery, IL

Built 1996 Load: 32.4 t ADT: 75

TR 169A

Good

Over: RAMSEY CREEK

6.5MI SE NOKOMIS, Montgomery, IL

Built 1991 Load: 32.4 t ADT: 25

TR 63

Good

Over: TRIB SHOAL CREEK

3MI NE HARVEL, Montgomery, IL

Built 1988 Load: 32.4 t ADT: 25

Showing 19,701-19,750 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.