State profile · Near median Poor share

Illinois bridge safety

Condition ratings, load ratings, and Poor-condition data for every public highway bridge in Illinois, based on the FHWA National Bridge Inventory.

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

Data updated May 2026

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 whose lowest applicable component is rated 0-4

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 - Poor-condition share 26.3%
National avg

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

Condition Distribution

Illinois48.2%42.6%9.2%GoodFairPoor
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 by Poor-condition share (lower share = better)

States are ranked by the share of bridges whose lowest applicable component rating is 4 or below. This describes recorded condition; it does not measure funding effectiveness or live crossing safety. States here sit immediately above and below Illinois on the same metric.

RI

Rhode Island

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

NE

Nebraska

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

IL

Illinois

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

MA

Massachusetts

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

MO

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 the portal's composite display score. Inspection intervals are risk-based under current NBIS rules.

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

Poor

Over: WILSON CREEK

NE-35-T3NR2E, Fulton, IL

Built 1935 Load: 1.3 t ADT: 10

TR 10-B

Poor

Over: KING CREEK

W EDGE OF MINERAL, Bureau, IL

Built 1899 Load: 1.6 t ADT: 10

TR-6

Poor

Over: DRAINAGE DITCH

3.5 MI NE DIETERICH, Effingham, IL

Built 1909 Load: 1.6 t ADT: 25

TR208K(TWIN BRIDGE

Poor

Over: BIG CREEK

NE EDGE MT ZION, Macon, IL

Built 1967 Load: 1.9 t ADT: 375

All Bridges in Illinois

FREDRICKSON PLACE

Fair

Over: SKOKIE DITCH

.2 M E 41, Lake, IL

Built 1985 Load: 32.4 t ADT: 900

WOODLAND DRIVE

Fair

Over: FLINT CREEK

1 M N23, 2 M W59, Lake, IL

Built 2015 Load: 32.4 t ADT: 325

WALDEN LANE

Fair

Over: RAVINE

WALDEN AT WESTLEIH, Lake, IL

Built 1914 Load: 32.4 t ADT: 175

ONWENTSIA ROAD

Fair

Over: SKOKIE RIVER

ONWENTSIA W GREEN BA, Lake, IL

Built 1993 Load: 32.4 t ADT: 525

LAKE SHR.DR.

Fair

Over: ROUND LAKE OUTFALL

1.2M.W.OF IL-83, Lake, IL

Built 1990 Load: 32.4 t ADT: 850

MAC GILLIS DR

Fair

Over: SQUAW CREEK

0.1 MI S IL 134, Lake, IL

Built 2016 Load: 32.4 t ADT: 1,250

ILL 23 FAP 68

Fair

Over: BUCK CREEK

2.36 MI S OF US 52, LaSalle, IL

Built 1970 Load: 32.4 t ADT: 3,350

FAS258 CH2

Fair

Over: INDIAN CREEK

E 2075 N 3510, LaSalle, IL

Built 1959 Load: 32.4 t ADT: 1,750

TR 285

Fair

Over: LITTLE VERMILLION R

N 30TH E 410, LaSalle, IL

Built 1965 Load: 32.4 t ADT: 625

CH 1

Fair

Over: CROOKED LEG CREEK

E 1553,N 4090, LaSalle, IL

Built 1976 Load: 32.4 t ADT: 775

CH 64

Fair

Over: VERMILION RIVER

N 15TH,E 1550, LaSalle, IL

Built 1976 Load: 32.4 t ADT: 1,150

TR 155A

Fair

Over: MISSION CREEK

N 39TH E 2860, LaSalle, IL

Built 1976 Load: 32.4 t ADT: 75

CH 40

Fair

Over: OTTER CREEK

N 13TH E2490, LaSalle, IL

Built 1979 Load: 32.4 t ADT: 600

TR 187 N 37TH

Fair

Over: SPRING CREEK

N 37TH E 125, LaSalle, IL

Built 1979 Load: 32.4 t ADT: 200

TR 210 E 1175TH

Fair

Over: BR INDIAN CREEK

E 1175TH N 4615, LaSalle, IL

Built 1980 Load: 32.4 t ADT: 50

TR 205 N 36TH

Fair

Over: TOMAHAWK CREEK

N36TH E680, LaSalle, IL

Built 1980 Load: 32.4 t ADT: 25

TR 535 N 14TH RD

Fair

Over: PRAIRIE CREEK

N14TH E 1925, LaSalle, IL

Built 1980 Load: 32.4 t ADT: 275

FAS 1273/CH 36

Fair

Over: DEADLY RUN

N2550 RD E2950, LaSalle, IL

Built 1980 Load: 32.4 t ADT: 1,050

TR 407 N 24TH

Fair

Over: COVEL CR

N 24TH E 1860, LaSalle, IL

Built 1981 Load: 32.4 t ADT: 25

TR 75 N 4325TH

Fair

Over: INDIAN CR

N 4325TH E 1525, LaSalle, IL

Built 1981 Load: 32.4 t ADT: 50

TR 571

Fair

Over: LONG POINT CR

N 1 ST RD E 850, LaSalle, IL

Built 1981 Load: 32.4 t ADT: 50

TR 018

Fair

Over: TRIB CEDAR CREEK

E1ST N2120, LaSalle, IL

Built 1982 Load: 32.4 t ADT: 75

TR 322 E 19TH

Fair

Over: BR COVEL CR

E 19TH N 2440, LaSalle, IL

Built 1982 Load: 32.4 t ADT: 25

TR-156 E 9TH

Fair

Over: PECUMSAUGAN CR

E 9TH N 3340, LaSalle, IL

Built 1982 Load: 32.4 t ADT: 100

TR 160

Fair

Over: SUTPHENS RUN

E 9TH N 4465, LaSalle, IL

Built 1983 Load: 32.4 t ADT: 25

TR 169A

Fair

Over: L VERMILION '

N 3850TH E 620, LaSalle, IL

Built 1983 Load: 32.4 t ADT: 50

TR 238 E 14TH

Fair

Over: INDIAN CREEK

E14TH N4440TH, LaSalle, IL

Built 1983 Load: 32.4 t ADT: 225

FAS 269 (CH12, N46

Fair

Over: FOURMILE GROVE CR

N46TH E750, LaSalle, IL

Built 1983 Load: 32.4 t ADT: 375

TR 3 N48TH

Fair

Over: TRIB INDIAN CREEK

N48TH E948, LaSalle, IL

Built 1983 Load: 32.4 t ADT: 25

TR 160 E 9TH

Fair

Over: BR INDIAN CR

E9TH,N4750TH, LaSalle, IL

Built 1983 Load: 32.4 t ADT: 25

TR 166 B

Fair

Over: LONG PT CR

E 10TH N 370 GROVLD, LaSalle, IL

Built 1984 Load: 32.4 t ADT: 25

TR 158

Fair

Over: TOMAHAWK CR OPHIR

E 9TH N 3705, LaSalle, IL

Built 1984 Load: 32.4 t ADT: 25

TR 354

Fair

Over: CREEK

E 21ST RD N 2450, LaSalle, IL

Built 1984 Load: 32.4 t ADT: 25

TR 493

Fair

Over: CREEK

TH RD E 2950, LaSalle, IL

Built 1984 Load: 32.4 t ADT: 75

TR 48

Fair

Over: BAILEY CR

E 3RD RD N 1857, LaSalle, IL

Built 1984 Load: 32.4 t ADT: 150

TR 330 E 1950TH RD

Fair

Over: INDIAN CREEK

E 1950TH RD N 4000, LaSalle, IL

Built 1986 Load: 32.4 t ADT: 50

FAS 369 N4TH RD

Fair

Over: LONG POINT CREEK

N 4TH RD E 1050, LaSalle, IL

Built 1986 Load: 32.4 t ADT: 125

TR 104

Fair

Over: STREAM

E 6TH N 1850, LaSalle, IL

Built 1985 Load: 32.4 t ADT: 25

TR 354

Fair

Over: TRIB OF COVEL CREEK

E 21ST N 1825, LaSalle, IL

Built 1985 Load: 32.4 t ADT: 25

TR 453 N 21ST RD

Fair

Over: CEDAR CREEK

N 21ST RD E 0060, LaSalle, IL

Built 1986 Load: 32.4 t ADT: 50

TR 310

Fair

Over: COVEL CREEK

E18TH,N2475TH, LaSalle, IL

Built 1988 Load: 32.4 t ADT: 100

TR 2 E 12TH RD

Fair

Over: LONG POINT CR

E 12TH RD N 450, LaSalle, IL

Built 1986 Load: 32.4 t ADT: 25

TR 332B

Fair

Over: BRANCH COVEL CREEK

E 20TH N2260, LaSalle, IL

Built 1987 Load: 32.4 t ADT: 25

TR 354 A

Fair

Over: OTTER CREEK

E 21ST RD N 1560, LaSalle, IL

Built 1987 Load: 32.4 t ADT: 25

MS 7112/PREV TR375

Fair

Over: S. KICKAPOOCREEK

N 2553 RD E 2550, LaSalle, IL

Built 1987 Load: 32.4 t ADT: 775

TR 109

Fair

Over: INDIAN CREEK

N.4101ST, E.1705TH, LaSalle, IL

Built 1989 Load: 32.4 t ADT: 25

TR567

Fair

Over: LONG POINT CREEK

N 3RD RD,E 920, LaSalle, IL

Built 1988 Load: 32.4 t ADT: 25

TR 503

Fair

Over: OTTER CREEK

N 16TH RD,E 2110, LaSalle, IL

Built 1988 Load: 32.4 t ADT: 1,700

TR 441

Fair

Over: BR COVEL CREEK

N22ND, E196TH, LaSalle, IL

Built 1989 Load: 32.4 t ADT: 75

CH 22

Fair

Over: INDIAN CREEK

N.42ND, E2195, LaSalle, IL

Built 1991 Load: 32.4 t ADT: 750

Showing 8,501-8,550 of 27,743 bridges

Related

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

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). Poor condition is an inspection-record category, not a closure or unsafe-to-cross designation. Consult the bridge owner for current status.

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.

Every figure on PlainBridge is rendered directly from federal source data, no number is typed in by an editor. This page draws directly on federal source data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.