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 191

Fair

Over: DRAINAGE DITCH

3405 E, 1200 N, Livingston, IL

Built 1920 Load: 32.4 t ADT: 50

TR 195

Fair

Over: DRAINAGE DITCH

605 E, 1100 N, Livingston, IL

Built 1950 Load: 32.4 t ADT: 25

FAS 2055 CH 28

Fair

Over: VERMILION RIVER

2.5 MI S OF CORNELL, Livingston, IL

Built 1983 Load: 32.4 t ADT: 200

CO HWY 13 FAS-354

Fair

Over: FORK OF ROOKS CREEK

2 MI S OF GRAYMONT, Livingston, IL

Built 1982 Load: 32.4 t ADT: 325

FAS 348A/CH 1

Fair

Over: CREEK

3.8 MI W CAMPUS, Livingston, IL

Built 1990 Load: 32.4 t ADT: 175

TR 276B

Fair

Over: TRIB TO VERMILION R

1190 N, 3400 E, Livingston, IL

Built 1979 Load: 32.4 t ADT: 50

TR 141

Fair

Over: FELKY SLOUGH

2365 E, 1600 N, Livingston, IL

Built 1979 Load: 32.4 t ADT: 75

TR 155

Fair

Over: DRAINAGE DITCH

3555 E, 1450 N, Livingston, IL

Built 1978 Load: 32.4 t ADT: 25

TR 1F

Fair

Over: CREEK

3130 E, 3300 N, Livingston, IL

Built 1979 Load: 32.4 t ADT: 50

TR 222

Fair

Over: INDIAN CREEK

180 N, 2500 E, Livingston, IL

Built 1980 Load: 32.4 t ADT: 25

TR 247

Fair

Over: INDIAN CREEK

1950 E, 350 N, Livingston, IL

Built 1981 Load: 32.4 t ADT: 75

TR 260A

Fair

Over: FIVE MILE CREEK

1850 N, 3100 E, Livingston, IL

Built 1980 Load: 32.4 t ADT: 25

TR 224

Fair

Over: FIVE MILE CREEK

1540 N, 2600 E, Livingston, IL

Built 1980 Load: 32.4 t ADT: 25

TR 268

Fair

Over: E FORK MAZON RIVER

3230 N, 3200 E, Livingston, IL

Built 1981 Load: 32.4 t ADT: 75

TR 107 ROWE ROAD

Fair

Over: VERMILION RIVER

1110 E, 2100 N, Livingston, IL

Built 1980 Load: 32.4 t ADT: 300

TR 137

Fair

Over: PIKE CREEK

1165 E, 1600 N, Livingston, IL

Built 1980 Load: 32.4 t ADT: 50

TR 195A

Fair

Over: ROOKS CREEK

1305 E, 1100 N, Livingston, IL

Built 1981 Load: 32.4 t ADT: 50

TR 230

Fair

Over: INDIAN CREEK

145 N, 2600 E, Livingston, IL

Built 1981 Load: 32.4 t ADT: 75

TR 282A

Fair

Over: N FORK VERMILION RI

14150N, 3500 E, Livingston, IL

Built 1982 Load: 32.4 t ADT: 100

TR 42

Fair

Over: LONG POINT CREEK

705 E, 2810 N, Livingston, IL

Built 1982 Load: 32.4 t ADT: 75

TR 198

Fair

Over: BROUGHTON CREEK

3295 E, 3100 N, Livingston, IL

Built 1983 Load: 32.4 t ADT: 50

TR 149

Fair

Over: FIVE MILE CREEK

2545 E, 1500 N, Livingston, IL

Built 1983 Load: 32.4 t ADT: 100

TR 84

Fair

Over: MUD CREEK

2605 N, 1100 E, Livingston, IL

Built 1984 Load: 32.4 t ADT: 200

TR 97

Fair

Over: DRAINAGE DITCH

1515 E, 2200 N, Livingston, IL

Built 1984 Load: 32.4 t ADT: 100

TR 210

Fair

Over: FELKY SLOUGH

1510 N, 2300 E, Livingston, IL

Built 1984 Load: 32.4 t ADT: 50

TR 233A

Fair

Over: CREEK

655 N, 2900 E, Livingston, IL

Built 1986 Load: 32.4 t ADT: 25

TR 149

Fair

Over: TRIB VERMILLION RV.

2920 E, 1500 N, Livingston, IL

Built 1988 Load: 32.4 t ADT: 100

TR 212

Fair

Over: S FORK VERMILION

885N, 2400E, Livingston, IL

Built 1993 Load: 32.4 t ADT: 125

FAU 6306

Fair

Over: VERMILLION RIVER

1380E,1800N, Livingston, IL

Built 2003 Load: 32.4 t ADT: 2,250

TR 108

Fair

Over: BAKER RUN

2310N, 1300E, Livingston, IL

Built 1998 Load: 32.4 t ADT: 200

FAU 6306

Fair

Over: VERMILLION RIVER

.12 MI E DEERFLD RD, Livingston, IL

Built 2003 Load: 32.4 t ADT: 2,250

FAU 6345

Fair

Over: LANDFILL ACCESS RD.

1410E,2100N, Livingston, IL

Built 2005 Load: 32.4 t ADT: 350

SOUTH STREET

Fair

Over: GOOSEBERRY CR

SOUTH ST IN DWIGHT, Livingston, IL

Built 1988 Load: 32.4 t ADT: 275

FRANKLIN ST

Fair

Over: GOOSEBERRY CREEK

N OF JAMES ST., Livingston, IL

Built 2003 Load: 32.4 t ADT: 450

I 55 & E&W FR RDS

Fair

Over: WOLF CREEK

N SANGAMON CO LINE, Logan, IL

Built 1944 Load: 32.4 t ADT: 33,125

I-55

Fair

Over: TRIB LAKE FORK

2.5M NE ELKHART INT, Logan, IL

Built 1922 Load: 32.4 t ADT: 17,450

LINCOLN PKWY.

Fair

Over: BRAINERDS BRANCH

1.5M E OLD IL 121, Logan, IL

Built 1939 Load: 32.4 t ADT: 4,150

MIDDLETOWN RD

Fair

Over: SALT CK

1 MI N MIDDLETOWN, Logan, IL

Built 1968 Load: 32.4 t ADT: 900

MT PULASKI ELKHART

Fair

Over: LAKE FORK CREEK

3 MI E ELKHART, Logan, IL

Built 1977 Load: 32.4 t ADT: 800

WAYNESVILLE ROAD

Fair

Over: CLEAR CREEK

3 E 2 MI S ATLANTA, Logan, IL

Built 1980 Load: 32.4 t ADT: 325

FAS 560

Fair

Over: PRAIRIE CRK TRIB

3 MI N NEWHOLLAND, Logan, IL

Built 1993 Load: 32.4 t ADT: 150

NEW HOLLAND-SAN JO

Fair

Over: LOCAL DRAINAGE

1 MI E SAN JOSE, Logan, IL

Built 1999 Load: 32.4 t ADT: 175

TR 334

Fair

Over: SALT CK

4.5 MI SE BEASON, Logan, IL

Built 1979 Load: 32.4 t ADT: 50

TR 31

Fair

Over: LOCAL DRAINAGE

2.75 MI E OF ATLANTA, Logan, IL

Built 1978 Load: 32.4 t ADT: 50

DOOLITTLE ROAD

Fair

Over: DEER CREEK

2 SE OF LINCOLN, Logan, IL

Built 1981 Load: 32.4 t ADT: 125

TR 158

Fair

Over: Trib to Salt Creek

4 MI S of Lincoln, Logan, IL

Built 2008 Load: 32.4 t ADT: 75

TR 161

Fair

Over: SALT CREEK TRIB.

1 S 4 MI EMIDDLETOWN, Logan, IL

Built 1980 Load: 32.4 t ADT: 100

POLECAT HILL RD

Fair

Over: SALT CK

2 MI E MIDDLETOWN, Logan, IL

Built 1984 Load: 32.4 t ADT: 100

TR 260

Fair

Over: DEER CREEK

4 MI E OF LINCOLN, Logan, IL

Built 1978 Load: 32.4 t ADT: 35

TR 61

Fair

Over: KICKAPOO CREEK

3 MI W LAWNDALE, Logan, IL

Built 1983 Load: 32.4 t ADT: 50

Showing 8,651-8,700 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.