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-49A

Good

Over: CAMEL CREEK

1.5 MI NE RINARD, Wayne, IL

Built 1984 Load: 32.4 t ADT: 35

TR-229

Good

Over: ELM RIVER DR DITCH

3 MI SW MT ERIE, Wayne, IL

Built 1984 Load: 32.4 t ADT: 50

TR-615

Good

Over: FISH SLOUGH CREEK

3 MI S WAYNE CITY, Wayne, IL

Built 1984 Load: 32.4 t ADT: 125

TR-36

Good

Over: SKILLET FORK CREEK

2 MI SW ORCHARDVILLE, Wayne, IL

Built 1984 Load: 32.4 t ADT: 25

FAS 2812

Good

Over: POND CREEK TRIBUTARY

3 MI S MERRIAM, Wayne, IL

Built 1985 Load: 32.4 t ADT: 75

TR-67

Good

Over: CAMEL CREEK

1 MI N RINARD, Wayne, IL

Built 1985 Load: 32.4 t ADT: 100

FAS-2820 (CH-29)

Good

Over: CAMEL CREEK

1 MI W RINARD, Wayne, IL

Built 1985 Load: 32.4 t ADT: 75

FAS-2819 (CH-12)

Good

Over: TRIB SKILLET FORK

2.5 MI N WAYNE CITY, Wayne, IL

Built 1987 Load: 32.4 t ADT: 425

CH-23

Good

Over: UNION DRAINAGE DITCH

2.5 MI NE GOLDEN GT, Wayne, IL

Built 1987 Load: 32.4 t ADT: 100

TR-238

Good

Over: MILLER CREEK

0.5 MI NW SIMS, Wayne, IL

Built 1986 Load: 32.4 t ADT: 50

TR-214

Good

Over: LITTLE DRY FORK

5 MI N SIMS, Wayne, IL

Built 1986 Load: 32.4 t ADT: 50

FAS-2816

Good

Over: WHITE OAK SLOUGH

0.5 MI N GOLDEN GATE, Wayne, IL

Built 1991 Load: 32.4 t ADT: 250

CH-8

Good

Over: TRIB BIG MOUND DRAIN

4 MI SE FAIRFIELD, Wayne, IL

Built 1987 Load: 32.4 t ADT: 75

CH-18

Good

Over: TRIB BOB BRANCH

NE SAM DALE LAKE, Wayne, IL

Built 1987 Load: 32.4 t ADT: 100

TR-405

Good

Over: ELM RIVER DR DITCH

4 MI NW GOLDEN GATE, Wayne, IL

Built 1989 Load: 32.4 t ADT: 125

FAS-2816

Good

Over: UNION DRAIN DITCH

0.25 MI E GOLDEN GT, Wayne, IL

Built 1989 Load: 32.4 t ADT: 75

TR-404

Good

Over: BIG MOUND DRAIN TRIB

1 MI S FAIRFIELD, Wayne, IL

Built 1988 Load: 32.4 t ADT: 125

TR-337

Good

Over: LITTLE WABASH

4.5 MI N GOLDEN GATE, Wayne, IL

Built 1989 Load: 32.4 t ADT: 35

TR-406

Good

Over: DEER CREEK

2.5 MI SE CISNE, Wayne, IL

Built 1995 Load: 32.4 t ADT: 35

TR-267

Good

Over: DRY FORK BY-PASS

3 MI SE JOHNSONVILLE, Wayne, IL

Built 1988 Load: 32.4 t ADT: 100

TR-44

Good

Over: GREGORY BRANCH

3 MI NNW KEENES, Wayne, IL

Built 1992 Load: 32.4 t ADT: 35

TR-548

Good

Over: KING CREEK

2.5 MI W GOLDEN GATE, Wayne, IL

Built 1988 Load: 32.4 t ADT: 175

FAS-2818 (CH-13)

Good

Over: GUM BRANCH

10 MI NW JOHNSONVILL, Wayne, IL

Built 1988 Load: 32.4 t ADT: 600

FAS-2818

Good

Over: POSSUM CREEK

7 MI N KEENES, Wayne, IL

Built 1991 Load: 32.4 t ADT: 700

TR-270

Good

Over: CREEK

3.5 MI NW RINARD, Wayne, IL

Built 1991 Load: 32.4 t ADT: 75

TR 647

Good

Over: POND CREEK

2 MI NE BURNT PRAIRI, Wayne, IL

Built 1990 Load: 32.4 t ADT: 20

TR-304

Good

Over: WASH HAZEL BR

3.5 MI NE SIMS, Wayne, IL

Built 1991 Load: 32.4 t ADT: 75

TR-563

Good

Over: DRY FORK DRAIN DITCH

2 MI SE SIMS, Wayne, IL

Built 1992 Load: 32.4 t ADT: 50

TR-241

Good

Over: BRUSH CREEK

1.7 MI SE ORCHARDVIL, Wayne, IL

Built 1993 Load: 32.4 t ADT: 100

TR-448

Good

Over: TRIB BOYD CREEK

2 MI N MILL SHOALS, Wayne, IL

Built 1993 Load: 32.4 t ADT: 125

FAS-1879

Good

Over: FOUR MILE CREEK

1.5 MI S KEENS, Wayne, IL

Built 1993 Load: 32.4 t ADT: 350

TR-661

Good

Over: SKILLET FORK

6 MI E MAYBERRY, Wayne, IL

Built 1996 Load: 32.4 t ADT: 50

FAS -2823

Good

Over: DRAINAGE DITCH

3.5 MI NW MILL SHOAL, Wayne, IL

Built 1994 Load: 32.4 t ADT: 50

TR-81A

Good

Over: ELM RIVER

3.5 MI N ENTERPRISE, Wayne, IL

Built 1997 Load: 32.4 t ADT: 50

TR-414

Good

Over: TRIB MARTIN CREEK

0.7 MI E GEFF, Wayne, IL

Built 1994 Load: 32.4 t ADT: 100

TR-205

Good

Over: EMMONS CREEK

1.5 MI SW MT ERIE, Wayne, IL

Built 1994 Load: 32.4 t ADT: 50

FAS-2818

Good

Over: PADDY CREEK

7.5 MI N KEENES, Wayne, IL

Built 1996 Load: 32.4 t ADT: 750

TR-427

Good

Over: WHITE OAK SLOUGH

2.5 NNE GOLDEN GA, Wayne, IL

Built 1996 Load: 32.4 t ADT: 35

TR 77

Good

Over: BRUSH CREEK

2 MI N SAM DALE LAKE, Wayne, IL

Built 1998 Load: 32.4 t ADT: 50

TR 479

Good

Over: POND CREEK

2 MI SE FAIRFIELD, Wayne, IL

Built 1998 Load: 32.4 t ADT: 50

FAS 706 (CH 3)

Good

Over: MILLER CREEK

1.5 MI N MT ERIE, Wayne, IL

Built 1998 Load: 32.4 t ADT: 125

TR 351

Good

Over: DRY FORK

6 MI W 1 MI S GEFF, Wayne, IL

Built 1998 Load: 32.4 t ADT: 35

TR 169

Good

Over: DRY FORK

1.5 MI NE JOHNSONVIL, Wayne, IL

Built 1998 Load: 32.4 t ADT: 75

TR 620

Good

Over: DRAINAGE DTCH

2 MI E MT ERIE .75S, Wayne, IL

Built 1999 Load: 32.4 t ADT: 100

TR 563

Good

Over: DRY FORK

2.5 MI SE SIMS, Wayne, IL

Built 1998 Load: 32.4 t ADT: 50

TR 526

Good

Over: EMMONS CREEK

7 MI NNE FAIRFIELD, Wayne, IL

Built 1999 Load: 32.4 t ADT: 35

TR 394

Good

Over: CREEK

SW FAIRFIELD, Wayne, IL

Built 1999 Load: 32.4 t ADT: 100

TR 525

Good

Over: POND CREEK DR DITCH

3 MI SE FAIRFIELD, Wayne, IL

Built 1999 Load: 32.4 t ADT: 75

CH 18

Good

Over: GUM BRANCH

0.3 MI W SAM DALE LK, Wayne, IL

Built 2000 Load: 32.4 t ADT: 125

TR 443

Good

Over: DRY FORK

5 MI W FAIRFIELD, Wayne, IL

Built 2000 Load: 32.4 t ADT: 20

Showing 21,501-21,550 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.