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

CS 3650

Good

Over: MAPLE BRANCH

SE1/4 SEC 2 T11S.R3E, Johnson, IL

Built 1985 Load: 32.4 t ADT: 25

OR 7650D

Good

Over: MAPLE BRANCH

SE1/4 SEC 2 T11S,R3E, Johnson, IL

Built 1987 Load: 32.4 t ADT: 200

TR 107

Good

Over: CEDAR CREEK

SW1/4 SEC15 T12S,R4E, Johnson, IL

Built 1988 Load: 32.4 t ADT: 75

TR 153

Good

Over: BEAR BRANCH

NE1/4 SEC20 T13S,R2E, Johnson, IL

Built 1989 Load: 32.4 t ADT: 25

TR 109

Good

Over: TRIB LITTLE CACHE CR

E 1/2 SEC23 T12S,R3E, Johnson, IL

Built 1989 Load: 32.4 t ADT: 75

TR 38

Good

Over: BUCK BRANCH CR

NE1/4 SEC32 T11S R2E, Johnson, IL

Built 1990 Load: 32.4 t ADT: 50

TR 70

Good

Over: GRASSHOPPER CREEK

1 MI NE BUNCOMBE, Johnson, IL

Built 1992 Load: 32.4 t ADT: 100

TR 233

Good

Over: POST CREEK CUTOFF

0.25 MI E OF BELKNAP, Johnson, IL

Built 1992 Load: 32.4 t ADT: 25

TR 92

Good

Over: DUTCHMAN CREEK

1.3 MI S OF VIENNA, Johnson, IL

Built 1993 Load: 32.4 t ADT: 75

TR 131

Good

Over: MCCORKLE CREEK

2 MI NE VIENNA, Johnson, IL

Built 1994 Load: 32.4 t ADT: 75

FAS 940

Good

Over: CYPRESS CREEK

PULASKI CO LINE, Johnson, IL

Built 1993 Load: 32.4 t ADT: 350

TR 140

Good

Over: GEORGES CREEK

SE1/4 NE1/4, SEC 29, Johnson, IL

Built 1993 Load: 32.4 t ADT: 75

TR 89-ALLEN ROAD

Good

Over: LICK CREEK

2 MI W BUNCOMBE, Johnson, IL

Built 1996 Load: 32.4 t ADT: 25

TR 35-BELVILLE RD

Good

Over: DRY FORK CREEK

NE1/4NW1/4, SEC14, Johnson, IL

Built 1996 Load: 32.4 t ADT: 10

TR 190

Good

Over: DRY FORK CREEK

NE1/4,SW1/4- SEC 14, Johnson, IL

Built 1996 Load: 32.4 t ADT: 25

TR215 W.WHITEHILL

Good

Over: TRIB TO CYPRESS CRK

3.0MI SW CYPRESS, Johnson, IL

Built 2002 Load: 32.4 t ADT: 25

TR 192-WALNUT GROV

Good

Over: POND CREEK

1.7 M NE NEWBURNSIDE, Johnson, IL

Built 1997 Load: 32.4 t ADT: 100

TR100-INDIANPOINT

Good

Over: CAVE CREEK

2.5 MI S. OF VIENNA, Johnson, IL

Built 2002 Load: 32.4 t ADT: 50

TR 221 CROSSROADS

Good

Over: CLIFTY CREEK

5 MI SE OF VIENNA, Johnson, IL

Built 1999 Load: 32.4 t ADT: 75

RAILROAD ST

Good

Over: LITTLE BLACK SLOUGH

SOUTH EDGE CYPRESS, Johnson, IL

Built 2007 Load: 32.4 t ADT: 50

Luther Chapel Road

Good

Over: UNNAMED CREEK

0.4MI WEST OF IL 37, Johnson, IL

Built 2008 Load: 32.4 t ADT: 25

PLEASANT GROVE RD

Good

Over: UNNAMED TRIBUTARY

1.7 MI W OF BUNCOMBE, Johnson, IL

Built 2013 Load: 32.4 t ADT: 25

WELLINGTON RD-TR 2

Good

Over: TRIB TO COLUMBIA DIT

W EDGE REEVESVILLE, Johnson, IL

Built 2007 Load: 32.4 t ADT: 100

SOUTH FORK LANE

Good

Over: JOHNSON CREEK

0.2MILES S OF IL 146, Johnson, IL

Built 2005 Load: 32.4 t ADT: 25

DOUBLE BRIDGE LA

Good

Over: EAST CEDAR CREEK

2.0 MI N OF SIMPSON, Johnson, IL

Built 2013 Load: 32.4 t ADT: 10

MCKINLEY LN

Good

Over: CANEY CREEK TRIB

NW 1/4 SEC 21 T11S R4E, Johnson, IL

Built 2019 Load: 32.4 t ADT: 10

TREAT LANE

Good

Over: CANEY CREEK TRIB

NW 1/4 SEC 28 T11S R4E, Johnson, IL

Built 2019 Load: 32.4 t ADT: 10

IL 38

Good

Over: DITCH

0.25 M W OF PECK RD, Kane, IL

Built 2012 Load: 32.4 t ADT: 11,200

US 30,IL31 RAMPS

Good

Over: STREAM

W of IL31 No of US30, Kane, IL

Built 2014 Load: 32.4 t ADT: 5,250

IL 31

Good

Over: DITCH

300' S of US30, Kane, IL

Built 2014 Load: 32.4 t ADT: 14,200

US 20

Good

Over: PINGREE CREEK

4 M SE OF IL 47, Kane, IL

Built 2004 Load: 32.4 t ADT: 12,100

INDIAN TRAIL

Good

Over: FOX RIVER

0.3 MI W MITCHELL, Kane, IL

Built 1963 Load: 32.4 t ADT: 19,400

DEERPATH ROAD

Good

Over: MILL CREEK

0.1 MI S MAIN ST, Kane, IL

Built 1970 Load: 32.4 t ADT: 1,700

REINKING ROAD

Good

Over: STREAM

2 MI E STARKS STA., Kane, IL

Built 1978 Load: 32.4 t ADT: 3,300

UMBDENSTOCK RD

Good

Over: CNIC RR(CC&P)

2 Mi. west of Ill 31, Kane, IL

Built 2012 Load: 32.4 t ADT: 10,500

BIG TIMBER ROAD

Good

Over: TYLER CREEK

0.5M W ILL 31, Kane, IL

Built 1990 Load: 32.4 t ADT: 15,500

DEERPATH LANE

Good

Over: TRIB. S. BR. KISHWAU

.55 MI SW OF HUNTLEY, Kane, IL

Built 2006 Load: 32.4 t ADT: 1,550

JIM DHAMER DRIVE

Good

Over: EAKIN CREEK

150' W OF IL RTE 47, Kane, IL

Built 1996 Load: 32.4 t ADT: 2,150

FAP-360 Frnswrth A

Good

Over: Indian Creek

0.3 MI S SHEFFER RD, Kane, IL

Built 2018 Load: 32.4 t ADT: 21,300

DELL WEBB BLVD

Good

Over: EAKIN CRK

0.7 MI W IL 47, Kane, IL

Built 2002 Load: 32.4 t ADT: 1,600

MICHIGAN AVENUE

Good

Over: S BR KISHWAUKEE RIV

0.2 MI S OF SUN CITY, Kane, IL

Built 2000 Load: 32.4 t ADT: 250

Tournament Drive

Good

Over: Bowes Creek

0.5 Mi W Bowes Creek Blvd, Kane, IL

Built 2007 Load: 32.4 t ADT: 1,300

WINCHESTER WAY

Good

Over: TRIB TO FERSON CREEK

0.1 MI E CORRON RD., Kane, IL

Built 1975 Load: 32.4 t ADT: 150

WILSON ST

Good

Over: FOX RIVER

.1 MI W OF IL25, Kane, IL

Built 2007 Load: 32.4 t ADT: 16,900

Sheffer Road

Good

Over: Indian Creek

.1M E. Farnsworth, Kane, IL

Built 2015 Load: 32.4 t ADT: 3,000

Reserve Drive

Good

Over: Otter Creek

0.7 Mi S Bowes Rd., Kane, IL

Built 2004 Load: 32.4 t ADT: 850

Reserve Drive

Good

Over: Otter Creek

0.6 Mi S Bowes Rd., Kane, IL

Built 2004 Load: 32.4 t ADT: 850

Reserve Drive

Good

Over: Otter Creek

0.5 Mi S Bowes Rd., Kane, IL

Built 2004 Load: 32.4 t ADT: 850

MAIN STREET

Good

Over: FOX RIVER

0.3 MI E. OF IL 31, Kane, IL

Built 1935 Load: 32.4 t ADT: 15,500

DAMISCH ROAD

Good

Over: TYLER CREEK

.2MI S BIG TIMBER RD, Kane, IL

Built 2010 Load: 32.4 t ADT: 2,400

Showing 18,251-18,300 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.