State profile · Near national median SD

Illinois bridge safety

Condition ratings, load ratings, and structural-deficiency data for every public highway bridge in Illinois — drawn straight from the FHWA National Bridge Inventory.

27,743
Public bridges
41.2%
Good condition
7.9%
Poor condition
7.9%
Structurally deficient

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 rated 0-4

Structurally Deficient

7.9%

2,186 bridges flagged for repair priority

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 — Structurally deficient share 26.3%
National avg

Lower is better. Bar maxes at 30% (worst-state ceiling). National average sits at 7.0%.

Condition Distribution

Bridge inventory deck-condition mix — Illinois (FHWA NBI)

Illinois41.185163825109036%36.47046101719353%7.879465090293047%7.879465090293047%GoodFairPoorStructurally Deficient
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 on the structurally deficient leaderboard (lower share = better)

States are ranked by share of bridges flagged structurally deficient — the FHWA classification for any span where deck, superstructure, or substructure carries a condition rating of 4 or below. Lower percentages indicate stronger maintenance funding and inspection follow-through. States here sit immediately above and below Illinois on the same metric.

44

Rhode Island

7.69% top marginal rate
Structure
Progressive
Burden @ $100K
$78

31

Nebraska

7.73% top marginal rate
Structure
Progressive
Burden @ $100K
$15,571
Selected

17

Illinois

7.88% top marginal rate
Structure
Progressive
Burden @ $100K
$27,743

25

Massachusetts

7.96% top marginal rate
Structure
Progressive
Burden @ $100K
$5,314

29

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 composite NBI rating. Each is inspected at least every 24 months.

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

Structurally Deficient

Over: WILSON CREEK

NE-35-T3NR2E, Fulton, IL

Built 1935 Load: 1.3 t ADT: 10

TR 10-B

Structurally Deficient

Over: KING CREEK

W EDGE OF MINERAL, Bureau, IL

Built 1899 Load: 1.6 t ADT: 10

TR-6

Structurally Deficient

Over: DRAINAGE DITCH

3.5 MI NE DIETERICH, Effingham, IL

Built 1909 Load: 1.6 t ADT: 25

TR208K(TWIN BRIDGE

Structurally Deficient

Over: BIG CREEK

NE EDGE MT ZION, Macon, IL

Built 1967 Load: 1.9 t ADT: 375

All Bridges in Illinois

TR 276

Good

Over: LICK CR TRIB

1.0 MI S LICK CREEK, Union, IL

Built 1987 Load: 32.4 t ADT: 225

TR 261

Good

Over: CLEAR CK TRIBUTARY

1 MI N OF FAIR CITY, Union, IL

Built 1988 Load: 32.4 t ADT: 175

TR 10

Good

Over: RUNNING LAKE DITCH

.5 MI E OF IL 3, Union, IL

Built 1988 Load: 32.4 t ADT: 25

TR 23

Good

Over: DRURY CR TRIB

S ENTR GIANT CITY PK, Union, IL

Built 1989 Load: 32.4 t ADT: 125

TR 212

Good

Over: PORTERFIELD CREEK

2.5 MI NE OF DONGOLA, Union, IL

Built 1990 Load: 32.4 t ADT: 100

TR 58

Good

Over: RUNNING LAKE DITCH

3 MI S WARE, Union, IL

Built 1992 Load: 32.4 t ADT: 125

TR 82

Good

Over: STREAM

0.5 MI N ILL 146, Union, IL

Built 1991 Load: 32.4 t ADT: 125

TR 79A

Good

Over: TRIB TO CLEAR CREEK

2 MI W OF COBDEN, Union, IL

Built 1993 Load: 32.4 t ADT: 175

TR 154

Good

Over: LITTLE CREEK

4 MI SE JONESBORO, Union, IL

Built 1995 Load: 32.4 t ADT: 200

TR 52A

Good

Over: HUTCHINS CREEK

1.9 MI N JCT FAS 923, Union, IL

Built 1993 Load: 32.4 t ADT: 25

TR 1

Good

Over: UNNAMED STREAM

3 MI NW ALTO PASS, Union, IL

Built 1993 Load: 32.4 t ADT: 25

TR 75-BERRYVILLE R

Good

Over: GREEN CREEK

1 MI W OF IL 127 N, Union, IL

Built 1997 Load: 32.4 t ADT: 150

TR 82A-STATE POND

Good

Over: GREEN CREEK

1 MI NW OF JONESBORO, Union, IL

Built 1996 Load: 32.4 t ADT: 175

CH1-SHILOH CHURCH

Good

Over: DRURY CR TRIBUTARY

2.4M S UN/JKSN CO LI, Union, IL

Built 1998 Load: 32.4 t ADT: 200

FAS 1902

Good

Over: LICK CREEK

3 MI S UNION CO LINE, Union, IL

Built 1998 Load: 32.4 t ADT: 375

TR 126B

Good

Over: CACHE RIVER

1 MI N OF ANNA, Union, IL

Built 2001 Load: 32.4 t ADT: 200

FAS 925-OLD CAPE R

Good

Over: TRIB TO DUTCH CREEK

NEAR TR 92 JUNCTION, Union, IL

Built 2001 Load: 32.4 t ADT: 450

FAS 925-OLD CAPE R

Good

Over: TRIB TO HARRISON CR

3 MI E OF IL 3/146, Union, IL

Built 2001 Load: 32.4 t ADT: 450

FAS 925-OLD CAPE R

Good

Over: HARRISON CREEK

2.5 E OF IL 3/146, Union, IL

Built 2001 Load: 32.4 t ADT: 450

FAS 925-OLD CAPE R

Good

Over: CLEAR CREEK TRIB

2.5 M E REYNOLDVILLE, Union, IL

Built 2001 Load: 32.4 t ADT: 450

CH-17

Good

Over: CYPRESS CREEK

3/4 MI S IL 146, Union, IL

Built 2002 Load: 32.4 t ADT: 400

TR 72

Good

Over: DUTCH CR

1 MI SW OF JONESBORO, Union, IL

Built 2004 Load: 32.4 t ADT: 25

TR 88-KAOLIN RD

Good

Over: CLEAR CREEK

2 MI SW COBDEN, Union, IL

Built 2001 Load: 32.4 t ADT: 325

TR 185

Good

Over: DUTCH CREEK TRIB

SW1/4 SEC26 T12S R2W, Union, IL

Built 2002 Load: 32.4 t ADT: 150

TR285-SWEETPOTATO

Good

Over: MILL CREEK

0.34 M N MILL CREEK, Union, IL

Built 2006 Load: 32.4 t ADT: 75

TR 90LINGLE CRK RD

Good

Over: DUTCH CREEK TRIB

JCT FAS RTE 925, Union, IL

Built 2005 Load: 32.4 t ADT: 125

CH 01-SHILO RD

Good

Over: DRURY CREEK TRIB

.1M.S.GIANT CITY PK., Union, IL

Built 2005 Load: 32.4 t ADT: 175

CH 01 - SHILO RD

Good

Over: DRURY CREEK TRIB

.6M.S.GIANT CITY PK., Union, IL

Built 2005 Load: 32.4 t ADT: 175

FAS 1926

Good

Over: BRADSHAW CREEK

6 MI E OF COBDEN, Union, IL

Built 2006 Load: 32.4 t ADT: 600

MORGAN SCHOOL ROAD

Good

Over: CANY CREEK

0.75M NW ILL 146, Union, IL

Built 2007 Load: 32.4 t ADT: 175

MT GLENN RD

Good

Over: CLEAR CREEK TRIB

1.5MI WEST OF COBDEN, Union, IL

Built 2007 Load: 32.4 t ADT: 175

TR 93

Good

Over: BRADSHAW CRK TRIB

3MI N OF ANNA, Union, IL

Built 2007 Load: 32.4 t ADT: 225

WILDERNESS RETREAT

Good

Over: COOPER CREEK

2.5 MI W MILL CREEK, Union, IL

Built 2020 Load: 32.4 t ADT: 25

TR 182

Good

Over: BRADSHAW CREEKTRIB

JCT.TR57 4M.NE.COBDN, Union, IL

Built 2006 Load: 32.4 t ADT: 50

LINGLE DREEK RD

Good

Over: LINGLE CREEK

0.22 MI NW IL 127, Union, IL

Built 2009 Load: 32.4 t ADT: 75

RHINE RD

Good

Over: TRIB TO CLEAR CREEK

4.6M SW OF ALTO PASS, Union, IL

Built 2010 Load: 32.4 t ADT: 25

LINGLE CREEK RD

Good

Over: LINGLE CREEK

2 MI NW MILL CREEK, Union, IL

Built 2009 Load: 32.4 t ADT: 75

KRATSINGER HOLLOW

Good

Over: GREEN CREEK

0.1MI N ILL 146, Union, IL

Built 2010 Load: 32.4 t ADT: 400

SPANISH BLUFF RD

Good

Over: TRIB TO CACHE RIVER

0.6 M S US 51, Union, IL

Built 2012 Load: 32.4 t ADT: 25

SADLER RD

Good

Over: LITTLE CREEK

1 MI SE OF ANNA, Union, IL

Built 2017 Load: 32.4 t ADT: 350

LINGLE CREEK RD

Good

Over: LINGLE CREEK

1.4M.N.MILL CREEK CL, Union, IL

Built 2011 Load: 32.4 t ADT: 75

Airport Road

Good

Over: Dutch Creek

1mi NW Lingle Cr Rd, Union, IL

Built 2012 Load: 32.4 t ADT: 75

TR 196 - FISHER LA

Good

Over: TRIB TO BIG CREEK

1 MILE SE DONGOLA, Union, IL

Built 2014 Load: 32.4 t ADT: 10

BARTSCH LA

Good

Over: TRIB TO CLEAR CREEK

MOUNTAIN GLENN, Union, IL

Built 2013 Load: 32.4 t ADT: 25

HAPPY HOLLER RD

Good

Over: CROOKED CREEK

1 MILE SW OF DONGOLA, Union, IL

Built 2015 Load: 32.4 t ADT: 50

CLARK LN

Good

Over: TRIB TO DUTCH CREEK

1 MI SW OF JONESBORO, Union, IL

Built 2014 Load: 32.4 t ADT: 25

TR 51

Good

Over: SEMINARY FORK

1 MI S ALTO PASS, Union, IL

Built 2013 Load: 32.4 t ADT: 25

TR 239

Good

Over: PORTERFIELD CREEK

2 MI NE DONGOLA, Union, IL

Built 2013 Load: 32.4 t ADT: 50

KERR CANYON RD

Good

Over: BRADSHAW CREEK

0.1MI S OF TR 57, Union, IL

Built 2016 Load: 32.4 t ADT: 10

TR-152 (Hughey Lan

Good

Over: Trib. Cache River

3 MI SE OF COBDEN, Union, IL

Built 2017 Load: 32.4 t ADT: 25

Showing 21,151-21,200 of 27,743 bridges

Related

All states → | National rankings → | Understanding conditions → | SD bridges explained →
Data sourced from the FHWA National Bridge Inventory (NBI), latest released cycle. See our methodology for details. Retrieved and formatted by PlainBridges Editorial.

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). A "structurally deficient" rating is a repair-priority signal, not a closure or unsafe-to-cross designation. Consult a qualified civil engineer before making decisions based on this data.

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.