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 0271 A

Good

Over: W FORK SHOAL CREEK

2.0 MI E LITCHFIELD, Montgomery, IL

Built 1987 Load: 37.3 t ADT: 200

TR 337

Good

Over: LITTLE APPLE CREEK

1.1MI SW NORTONVILLE, Morgan, IL

Built 1989 Load: 37.3 t ADT: 50

CH 18

Good

Over: BRANCH APPLE CREEK

2.0 MI SW WAVERLY, Morgan, IL

Built 1995 Load: 37.3 t ADT: 300

LINDENWOOD ROAD

Good

Over: BRANCH OF KILBUCK CR

9.0 MI N CRESTON, Ogle, IL

Built 1983 Load: 37.3 t ADT: 850

FAP 103-IL 13

Good

Over: GALUM CREEK

1 MI E RANDOLPH CO, Perry, IL

Built 2001 Load: 37.3 t ADT: 2,100

TR 19

Good

Over: MOORES BRANCH

1.25 MI N FAS 1822, Perry, IL

Built 1900 Load: 37.3 t ADT: 25

CH 9

Good

Over: MADDEN CREEK

2.0 MI E GALESVILLE, Piatt, IL

Built 1977 Load: 37.3 t ADT: 225

FAS 541(CH 6)

Good

Over: STREAM

1 MI E ALLERTON PARK, Piatt, IL

Built 1980 Load: 37.3 t ADT: 350

I 57 SB & US 51 SB

Good

Over: CNIC RR

0.2 MI N FAS 2936, Pulaski, IL

Built 1966 Load: 37.3 t ADT: 6,700

ILL 37

Good

Over: STREAM

0.3 MI S OLMSTD SPUR, Pulaski, IL

Built 2004 Load: 37.3 t ADT: 1,150

TR 26

Good

Over: TRIB TO MIDDLE FORK

1 M S 4 M W GALATIA, Saline, IL

Built 1982 Load: 37.3 t ADT: 25

TR 7 (10N)

Good

Over: FANCY CREEK

5.0 MI E CANTRALL, Sangamon, IL

Built 1969 Load: 37.3 t ADT: 50

COVERED BRIDGE RD

Good

Over: SUGAR CR

0.5 N OF GLENARM, Sangamon, IL

Built 1983 Load: 37.3 t ADT: 550

Kent Road

Good

Over: Yellow Creek

4mi NW of Pearl City, Stephenson, IL

Built 2012 Load: 37.3 t ADT: 250

FAS 2462 - CH 11

Good

Over: LOST CREEK

NE COR-36-T23NR5W, Tazewell, IL

Built 2001 Load: 37.3 t ADT: 2,400

NASH ROAD

Good

Over: TRIB TO BIG CREEK

WRIGHT LA JUNCTION, Union, IL

Built 2019 Load: 37.3 t ADT: 10

TR 132

Good

Over: NEGRO CREEK

S1/2-23-T9NR2W, Warren, IL

Built 1979 Load: 37.3 t ADT: 50

TR-404

Good

Over: Drainage Ditch

0.72 Mi. SW Fairfiel, Wayne, IL

Built 2016 Load: 37.3 t ADT: 200

95TH STREET

Good

Over: DUPAGE RIVER

1.16M SE PLAIN-NAPRD, Will, IL

Built 2014 Load: 37.3 t ADT: 9,650

Cherry Hill Rd

Good

Over: Jackson Branch

0.6 MI S of US 52, Will, IL

Built 2021 Load: 37.3 t ADT: 775

KENNEDY ROAD

Good

Over: S BR ROCK CREEK

3.5 MI E IL-50, Will, IL

Built 2000 Load: 37.3 t ADT: 100

SOUTH BEND RD

Good

Over: KILBUCK CR

1.1MI W OF IL 251, Winnebago, IL

Built 2010 Load: 37.3 t ADT: 475

CH-4

Good

Over: Tourmeal Creek

3.5 SE BURTON, Adams, IL

Built 2002 Load: 37.6 t ADT: 575

IL 107

Good

Over: MCKEE CREEK

7.2M S IL99-MT STRLG, Brown, IL

Built 1950 Load: 37.6 t ADT: 1,400

IL 26 FAP 316

Good

Over: LIME CREEK

1 MI S OF KASBEER, Bureau, IL

Built 2005 Load: 37.6 t ADT: 2,300

FAS 502(CH 20)

Good

Over: DITCH

.75 MI W OF ROYAL, Champaign, IL

Built 1995 Load: 37.6 t ADT: 675

ILL 49 (FAP 836)

Good

Over: SALT FORK

1.25 MI N OF HOMER, Champaign, IL

Built 2005 Load: 37.6 t ADT: 3,200

TR 69 C

Good

Over: BUCK CREEK

1.8 MI SW PENFIELD, Champaign, IL

Built 2021 Load: 37.6 t ADT: 50

TR 1 (CLARK CO)

Good

Over: EAST FORK CREEK

4.5 MI SE OF ASHMORE, Clark, IL

Built 1999 Load: 37.6 t ADT: 50

IL 171 (1ST AVE)

Good

Over: SALT CREEK

0.2 M N US 34, Cook, IL

Built 1931 Load: 37.6 t ADT: 36,500

TR-312

Good

Over: NO BUSINESS CREEK

1.5 MI S BRISTOL, Crawford, IL

Built 1909 Load: 37.6 t ADT: 50

FAS 483(CH 17)

Good

Over: DRAINAGE DITCH

3.7 MI S WAYNESVILLE, De Witt, IL

Built 1900 Load: 37.6 t ADT: 250

IL 23

Good

Over: E BR,S BR KISHW RIV

0.4 MI N JCT ILL 64, DeKalb, IL

Built 2003 Load: 37.6 t ADT: 10,500

FAP 323(US 36)

Good

Over: HACKETT CREEK

2.8 MI E OF TUSCOLA, Douglas, IL

Built 2009 Load: 37.6 t ADT: 4,250

IL 64 WB

Good

Over: W BR DUPAGE RIVER

1.8 MI E OF IL 59, DuPage, IL

Built 2001 Load: 37.6 t ADT: 35,100

IL 64 EB

Good

Over: W BR DU PAGE RIVER

1.8 M E OF IL 59, DuPage, IL

Built 2001 Load: 37.6 t ADT: 35,100

FAS 1652 (US 45)

Good

Over: E Branch Green Creek

1.5 Mi. S Shelby Co., Effingham, IL

Built 2016 Load: 37.6 t ADT: 3,950

TR-194A

Good

Over: GREEN CREEK

3.5 MI N EFFINGHAM, Effingham, IL

Built 1993 Load: 37.6 t ADT: 475

FAS-1710 (CH-24)

Good

Over: LILY CREEK

2 MI S FUNKHOUSER, Effingham, IL

Built 1991 Load: 37.6 t ADT: 950

TR-85B

Good

Over: LITTLE WABASH RIVER

1 MI W EFFINGHAM, Effingham, IL

Built 1995 Load: 37.6 t ADT: 950

TR-238

Good

Over: LITTLE BISHOP CREEK

3 MI SW ELLIOTSTOWN, Effingham, IL

Built 2004 Load: 37.6 t ADT: 50

TR 139

Good

Over: BISHOP CREEK

1.5 MI NW DIETERICH, Effingham, IL

Built 2005 Load: 37.6 t ADT: 125

ILL 34

Good

Over: CNIC RR

1 MI W HANAFORD, Franklin, IL

Built 2009 Load: 37.6 t ADT: 2,750

FAS 2882-IL 37

Good

Over: BRANCH-MF BIG MUDDY

0.5 MI N W FRANKFORT, Franklin, IL

Built 1998 Load: 37.6 t ADT: 5,500

FAP 869-IL 14

Good

Over: TRIB TO BIGMUDDY RV

NEAR ECL OF BUCKNER, Franklin, IL

Built 2001 Load: 37.6 t ADT: 4,950

TR 140

Good

Over: GREEN RIVER

0.6 M. SE OF ORIENT, Franklin, IL

Built 1978 Load: 37.6 t ADT: 75

FAS 1881

Good

Over: KING CREEK

W VALIER, Franklin, IL

Built 1983 Load: 37.6 t ADT: 900

FAS 868-CH 17

Good

Over: MID FRK BIG MUDDY RV

1275N-2100E, Franklin, IL

Built 1991 Load: 37.6 t ADT: 1,100

EAKINGROVE RD

Good

Over: BIG MUDDY TRIB

500' N RIVER BEND RD, Franklin, IL

Built 2021 Load: 37.6 t ADT: 125

TR 193

Good

Over: WHITAKER CREEK

4M NE CARROLLTON, Greene, IL

Built 1989 Load: 37.6 t ADT: 50

Showing 22,801-22,850 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.