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

CS 1082-MARYLAND

Fair

Over: TRIB TO PRAIRIE CR

ZEIGLER, Franklin, IL

Built 1995 Load: 32.4 t ADT: 175

FAS 1384-CH 27

Fair

Over: MIDDLE BR COPPERAS

E1/2-21-T7NR5E, Fulton, IL

Built 1951 Load: 32.4 t ADT: 1,200

FAS 460-CH 14

Fair

Over: BIG CREEK

SE-24-T5NR2E, Fulton, IL

Built 1947 Load: 32.4 t ADT: 225

FAS 450-CH 20

Fair

Over: GALLETT CREEK

W1/2-20-T8NR1E, Fulton, IL

Built 1990 Load: 32.4 t ADT: 225

FAS 450-CH 20

Fair

Over: CEDAR CREEK

SW-12-T8NR1E, Fulton, IL

Built 1979 Load: 32.4 t ADT: 150

FAS 450-CH 20

Fair

Over: SPOON RIVER

NE-8-T8NR2E, Fulton, IL

Built 1984 Load: 32.4 t ADT: 150

FAS 452-CH 2

Fair

Over: PUTT CREEK

SW-4-T6NR2E, Fulton, IL

Built 2006 Load: 32.4 t ADT: 375

FAS 452-CH 2

Fair

Over: Laswell Creek

E 1/2-8-T6NR2E, Fulton, IL

Built 2013 Load: 32.4 t ADT: 375

FAS 450-CH 20

Fair

Over: CREEK

NE-9-T8NR2E, Fulton, IL

Built 1984 Load: 32.4 t ADT: 150

FAS 450-CH 17

Fair

Over: CREEK

NW-14-T8NR1E, Fulton, IL

Built 1986 Load: 32.4 t ADT: 150

FAS 452 (CH 2)

Fair

Over: TATER CREEK

1 Mi. N. of US 136, Fulton, IL

Built 2016 Load: 32.4 t ADT: 350

BIG BARN RD - TR 1

Fair

Over: E BR COPPERAS CR

SE1/4-13-T7NR5E, Fulton, IL

Built 1977 Load: 32.4 t ADT: 75

TR 2A

Fair

Over: SWAN CREEK

SW1/4-18-T8NR1E, Fulton, IL

Built 1979 Load: 32.4 t ADT: 50

NEWCOMB RD - TR 15

Fair

Over: SWEGLE CREEK

N1/2-12-T8NR2E, Fulton, IL

Built 1986 Load: 32.4 t ADT: 25

ROBERTS RD - TR 61

Fair

Over: GALLET CREEK

NE-29-T8NR1E, Fulton, IL

Built 1999 Load: 32.4 t ADT: 75

HATCH RD - TR 85

Fair

Over: GALLETT CR

SE-30-T8NR1E, Fulton, IL

Built 1995 Load: 32.4 t ADT: 50

BLUE SPRUCE LN-TR9

Fair

Over: MID. BR COPPERAS CR

N.LINE-SE-36-T8NR4E, Fulton, IL

Built 1982 Load: 32.4 t ADT: 25

OWENS RD -TR 95

Fair

Over: COPPERAS CREEK

SW-35-T8NR4E, Fulton, IL

Built 1987 Load: 32.4 t ADT: 100

TROY RD - TR 98

Fair

Over: BR AYLESWORTH CREEK

SE-35-T8NR1E, Fulton, IL

Built 1992 Load: 32.4 t ADT: 25

SEVILLE RD - TR 11

Fair

Over: SPOON RIVER

E1/2-23-T6NR1E, Fulton, IL

Built 1977 Load: 32.4 t ADT: 75

BABYLON RD - TR 11

Fair

Over: TURKEY CREEK

SW-11-T7N R2E, Fulton, IL

Built 1983 Load: 32.4 t ADT: 50

DOGPATCH RD - TR 1

Fair

Over: TURKEY CREEK

SE-27-T7NR2E, Fulton, IL

Built 1989 Load: 32.4 t ADT: 50

BREEDS RD - TR 169

Fair

Over: COPPERAS CREEK

SE-27-T7NR5E, Fulton, IL

Built 1981 Load: 32.4 t ADT: 75

TATER CR RD - TR 1

Fair

Over: TATER CREEK

SE-32-T5NR2E, Fulton, IL

Built 1994 Load: 32.4 t ADT: 25

BUCKEYE CHURCH-TR2

Fair

Over: SPOON RIVER

3.5 MI SW BLYTON, Fulton, IL

Built 1994 Load: 32.4 t ADT: 25

OAK TREE RD - TR 2

Fair

Over: OTTER CREEK

E1/2-27-T4NR2E, Fulton, IL

Built 1979 Load: 32.4 t ADT: 25

CAMERON RD - TR 21

Fair

Over: PUT CREEK

NE-10-T6NR2E, Fulton, IL

Built 1997 Load: 32.4 t ADT: 10

ORCHARD RD-TR276

Fair

Over: TURKEY CREEK

W1/2-13-T7NR2E, Fulton, IL

Built 1981 Load: 32.4 t ADT: 25

WHITMAN RD - TR 32

Fair

Over: BIG CREEK

SE-34-T6NR3E, Fulton, IL

Built 1984 Load: 32.4 t ADT: 25

CHOCKLEY RD - TR33

Fair

Over: STUART CREEK

E1/2-2-T5NR2E, Fulton, IL

Built 1986 Load: 32.4 t ADT: 10

GRAFF RD-TR 365

Fair

Over: STUART CREEK

E 1/2-14-T5NR2E, Fulton, IL

Built 1987 Load: 32.4 t ADT: 10

COLLEGE RD - TR 44

Fair

Over: BIG CREEK

S.CTR-20-T6NR4E, Fulton, IL

Built 1978 Load: 32.4 t ADT: 200

TOWNSHIP RD - TR 4

Fair

Over: SUGAR CREEK

SW-19-T4NR1E, Fulton, IL

Built 1983 Load: 32.4 t ADT: 50

NEW BRIDGE RD-TR21

Fair

Over: BIG CR

NW-9-T6NR4E, Fulton, IL

Built 1986 Load: 32.4 t ADT: 50

BIRDS CORNERRD-TR1

Fair

Over: TIBER CREEK

SW1/4-1-T7NR5E, Fulton, IL

Built 1984 Load: 32.4 t ADT: 50

TR 18

Fair

Over: SHAW CREEK

SW-8-T7NR1E, Fulton, IL

Built 1991 Load: 32.4 t ADT: 75

TROY RD - TR 98

Fair

Over: BR AYLESWORTH CREEK

SE-35-T8NR1E, Fulton, IL

Built 1992 Load: 32.4 t ADT: 25

GOAT RD - TR 366A

Fair

Over: SOUTH FORK CREEK

NE-21-T8NR3E, Fulton, IL

Built 1998 Load: 32.4 t ADT: 25

TR 178

Fair

Over: STREAM

W.CTR-21-T5NR2E, Fulton, IL

Built 1997 Load: 32.4 t ADT: 25

VINE ST

Fair

Over: BIG CREEK

NW-27-T7NR4E, Fulton, IL

Built 1969 Load: 32.4 t ADT: 850

ILL 13

Fair

Over: CYPRESS BRANCH

2.2 MI E OF ILL 1, Gallatin, IL

Built 1965 Load: 32.4 t ADT: 2,700

TR 126

Fair

Over: CANE CREEK

5 MILE SE OF OMAHA, Gallatin, IL

Built 1982 Load: 32.4 t ADT: 50

TWP RD 15

Fair

Over: CANE CREEK

4 MI E OF OMAHA, Gallatin, IL

Built 1988 Load: 32.4 t ADT: 50

ILL 13

Fair

Over: OHIO RIVER

AT STATE LN-KY MAINT, Gallatin, IL

Built 1955 Load: 32.4 t

US 67

Fair

Over: APPLE CREEK

3.31 MI S WHITEHALL, Greene, IL

Built 1972 Load: 32.4 t ADT: 3,650

IL 267

Fair

Over: LONG CREEK

6 MI N GREENFIELD, Greene, IL

Built 1939 Load: 32.4 t ADT: 2,150

ILL 106

Fair

Over: HURRICANE CREEK

2.33 S OF CO LINE, Greene, IL

Built 1938 Load: 32.4 t ADT: 1,350

CH 17

Fair

Over: MACOUPIN CREEK

4 MI NW OLD KANE, Greene, IL

Built 1961 Load: 32.4 t ADT: 150

TR 301

Fair

Over: WINES BRANCH

3.7 MI W OF KANE, Greene, IL

Built 1976 Load: 32.4 t ADT: 250

TR 69

Fair

Over: SEMINARY CREEK

0.8 MI W WHITE HALL, Greene, IL

Built 1980 Load: 32.4 t ADT: 25

Showing 8,001-8,050 of 27,743 bridges

Related

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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.