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 329

Good

Over: SPANISH NEEDLE CR

3 M N GILLESPI, Macoupin, IL

Built 2006 Load: 32.4 t ADT: 175

TR 477

Good

Over: W FRK CAHOKIA CR

3 M S WILSONVILLE, Macoupin, IL

Built 2009 Load: 32.4 t ADT: 125

TR 177

Good

Over: Shearles Branch

0.28 mi E TR 478, Macoupin, IL

Built 2022 Load: 32.4 t ADT: 50

CH 18

Good

Over: OTTER CREEK

1 MI. E. HETTICK, Macoupin, IL

Built 1955 Load: 32.4 t ADT: 275

FAS 1737 / CH 9

Good

Over: SOLOMON CREEK

.5 MI. W. HETTICK, Macoupin, IL

Built 1964 Load: 32.4 t ADT: 300

TR 305

Good

Over: COOP BRANCH

3 M NE MEDORA, Macoupin, IL

Built 2010 Load: 32.4 t ADT: 20

TR473

Good

Over: CREEK

4.5 MI. W.STAUTON, Macoupin, IL

Built 1977 Load: 32.4 t ADT: 75

TR 47

Good

Over: CREEK

1.5 MI SW VIRDEN, Macoupin, IL

Built 1980 Load: 32.4 t ADT: 50

TR 201

Good

Over: LICK CR

3.0 MI SE HETTICK, Macoupin, IL

Built 1983 Load: 32.4 t ADT: 20

TR 181

Good

Over: SOLOMON CRK

2.5 MI SW HETTICK, Macoupin, IL

Built 1984 Load: 32.4 t ADT: 20

TR 173

Good

Over: STEER CRK

3.5 MI W HETTICK, Macoupin, IL

Built 1984 Load: 32.4 t ADT: 50

TR 234

Good

Over: MAY CR

3MI S MACOUPIN STA, Macoupin, IL

Built 1984 Load: 32.4 t ADT: 100

TR 465

Good

Over: HONEY CUT BRANCH

1.5 SO 2.5E BRIGHTON, Macoupin, IL

Built 1986 Load: 32.4 t ADT: 325

TR 353

Good

Over: MAY BRANCH

2.5 MI NO ROYAL LAKE, Macoupin, IL

Built 1986 Load: 32.4 t ADT: 35

TR 237

Good

Over: JOES CREEK

4.5 MI NW CHESTERFIE, Macoupin, IL

Built 1985 Load: 32.4 t ADT: 50

FAS 732

Good

Over: E FK OTTER CR

2 M W GIRARD, Macoupin, IL

Built 2003 Load: 32.4 t ADT: 1,700

FAS 1741

Good

Over: MACOUPIN CREEK

6 MI E NILWOOD, Macoupin, IL

Built 2008 Load: 32.4 t ADT: 225

CH 10

Good

Over: MAY BRANCH

2 M E PLAINVIEW, Macoupin, IL

Built 2013 Load: 32.4 t ADT: 125

CH 11

Good

Over: OTTER CREEK

5 M NE OF HETTICK, Macoupin, IL

Built 2008 Load: 32.4 t ADT: 150

CH 34

Good

Over: JOES CREEK

5.5MI SW HETTICK, Macoupin, IL

Built 1997 Load: 32.4 t ADT: 50

TR 4

Good

Over: APPLE CREEK

2 M NW SCOTTVILLE, Macoupin, IL

Built 2009 Load: 32.4 t ADT: 50

TR 39

Good

Over: CREEK

6.0 MI. W OF VIRDEN, Macoupin, IL

Built 1996 Load: 32.4 t ADT: 20

TR 90

Good

Over: MACOUPIN CREEK

4 MI S CHESTERFIELD, Macoupin, IL

Built 1993 Load: 32.4 t ADT: 100

TR 94

Good

Over: LICK CREEK

1.7MI N CHESTERFIELD, Macoupin, IL

Built 1999 Load: 32.4 t ADT: 35

TR 149

Good

Over: SHEARLESS CR

1 MI N STANDARD CITY, Macoupin, IL

Built 2005 Load: 32.4 t ADT: 35

TR 182

Good

Over: LICK CREEK

3.5 MI SE HETTICK, Macoupin, IL

Built 2002 Load: 32.4 t ADT: 20

TR-249 (Rinaker Rd

Good

Over: Hurricane Creek

0.80 W Shipman Blktp, Macoupin, IL

Built 2017 Load: 32.4 t ADT: 375

MUNI 6030

Good

Over: CROOKED CREEK

ROYAL LAKES, Macoupin, IL

Built 2009 Load: 32.4 t ADT: 125

TR 170

Good

Over: TRIB MACOUPIN CR

3 MI NW MACOUPIN ST, Macoupin, IL

Built 2004 Load: 32.4 t ADT: 50

TR 315

Good

Over: DRY FORK

5.5 MI N ROYAL LAKE, Macoupin, IL

Built 2003 Load: 32.4 t ADT: 300

FAS 732

Good

Over: SOLOMON CR

W EDGE PALMYRA, Macoupin, IL

Built 2005 Load: 32.4 t ADT: 400

TR 396

Good

Over: OTTER CRK.

.5 S, 3W GIRARD, Macoupin, IL

Built 2005 Load: 32.4 t ADT: 35

TR 465

Good

Over: WOOD RIVER

1MI S 1MI E BRIGHTON, Macoupin, IL

Built 1991 Load: 32.4 t ADT: 200

TR 467

Good

Over: GIRDER CREEK

4.0 MI SE BRIGHTON, Macoupin, IL

Built 1998 Load: 32.4 t ADT: 75

TR 473

Good

Over: CAHOKIA CREEK

3 MI W STAUTON, Macoupin, IL

Built 1995 Load: 32.4 t ADT: 75

TR 480

Good

Over: Schearles Branch

2.5 miles NE of Nilwood, Macoupin, IL

Built 2022 Load: 32.4 t ADT: 50

TR 74

Good

Over: PANTHER CREEK

3MI NE SCOTTVILLE, Macoupin, IL

Built 1991 Load: 32.4 t ADT: 50

TR 105

Good

Over: SHEARLESS BRANCH

1.8 MI NE NILWOOD, Macoupin, IL

Built 2000 Load: 32.4 t ADT: 50

FAS 732

Good

Over: HICKS CREEK

2.9 Mi W IL 111, Macoupin, IL

Built 2012 Load: 32.4 t ADT: 500

FAS 732

Good

Over: JOES CREEK

2.6 mi W IL 111, Macoupin, IL

Built 2012 Load: 32.4 t ADT: 500

TR 328A

Good

Over: TRIBUTARY

1.0 MI SO CARLINVILE, Macoupin, IL

Built 1987 Load: 32.4 t ADT: 150

TR 457

Good

Over: STAUNTON RESERVOIR

STAUNTON RESERVOIR, Macoupin, IL

Built 1996 Load: 32.4 t ADT: 200

2nd ST

Good

Over: Trib Bear Creek

CITY OF GILLESPIE, Macoupin, IL

Built 2011 Load: 32.4 t ADT: 325

E Easton Av

Good

Over: Bear Creek

.06 mi E 2nd St, Macoupin, IL

Built 2011 Load: 32.4 t ADT: 250

ILL 4

Good

Over: TRIB TO SILVER CREEK

0.83 MI S OF ILL 143, Madison, IL

Built 1934 Load: 32.4 t ADT: 5,750

ILL 160

Good

Over: DRAIN TO SILVER LAKE

1MI N I-70AT TR 237, Madison, IL

Built 1982 Load: 32.4 t ADT: 2,550

FAI 255

Good

Over: SCHNIEDER DITCH

.5MI NO OFI-55/70, Madison, IL

Built 1985 Load: 32.4 t ADT: 40,200

IL 255 (FAP 310)

Good

Over: STREAM

0.17MI N MADISON AVE, Madison, IL

Built 1998 Load: 32.4 t ADT: 25,700

HORSESHOE LAKE RD

Good

Over: DRAIN TO HRSESHOE LK

.28MI W OF IL 111, Madison, IL

Built 2003 Load: 32.4 t ADT: 7,250

IL 100

Good

Over: YOUNGBLOOD HOLLOW BR

1.6MI E JERSEY CO LN, Madison, IL

Built 2008 Load: 32.4 t ADT: 6,600

Showing 19,051-19,100 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.