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

CH 29 FAU 6141

Good

Over: EGG BAG CREEK

1380 E 15TH, LaSalle, IL

Built 2010 Load: 32.4 t ADT: 1,100

FAS 1356 (CH33)

Good

Over: TOMAHAWK CREEK

N 33RD E 515, LaSalle, IL

Built 2011 Load: 32.4 t ADT: 625

FAS 271(CH25)

Good

Over: BR NETTLE CREEK

E 29TH, N 3125, LaSalle, IL

Built 2011 Load: 32.4 t ADT: 1,150

TR156, E9TH

Good

Over: CLARK RUN CREEK

E 9TH, N 2965, LaSalle, IL

Built 2009 Load: 32.4 t ADT: 100

TR-19

Good

Over: Indian Creek

N 47TH E 1080, LaSalle, IL

Built 2018 Load: 32.4 t ADT: 25

FAS 260 CH 13

Good

Over: TOMAHAWK CREEK

E 5TH, N 3225, LaSalle, IL

Built 2013 Load: 32.4 t ADT: 625

TR 559

Good

Over: Sandy Creek

N 7th E 790, LaSalle, IL

Built 2015 Load: 32.4 t ADT: 400

TR 4 Meridian RD

Good

Over: Spring Creek

E 0th,N. 3850, LaSalle, IL

Built 2014 Load: 32.4 t ADT: 100

FAS 174/CH 9

Good

Over: Buck Creek

E 12th, N 3650, LaSalle, IL

Built 2013 Load: 32.4 t ADT: 325

TR 332

Good

Over: Covel Creek

E 20th N 2210, LaSalle, IL

Built 2014 Load: 32.4 t ADT: 25

CH 15, FAS 268

Good

Over: Covel Creek

E 22nd, N 2015, LaSalle, IL

Built 2014 Load: 32.4 t ADT: 950

CH 15

Good

Over: Wolf Creek

E 22nd N 1830, LaSalle, IL

Built 2014 Load: 32.4 t ADT: 950

CH 66

Good

Over: Covel Creek Tributar

N.25th / E.1960, LaSalle, IL

Built 2014 Load: 32.4 t ADT: 325

CH 6 N21ST

Good

Over: COVEL CREEK

3 Mi. E. of Gr Ridge, LaSalle, IL

Built 2015 Load: 32.4 t ADT: 1,100

CH 6 N21ST RD

Good

Over: COVEL CREEK

N 21ST E 1920, LaSalle, IL

Built 2015 Load: 32.4 t ADT: 1,100

CH 51

Good

Over: Walbridge Creek

1.5 Mi W of CH 15, LaSalle, IL

Built 2013 Load: 32.4 t ADT: 1,300

TR-187

Good

Over: Spring Creek

N. 37th E. 120, LaSalle, IL

Built 2016 Load: 32.4 t ADT: 200

TR 322

Good

Over: COVEL CREEK

E 19TH N 2095, LaSalle, IL

Built 2016 Load: 32.4 t ADT: 50

TR 152A

Good

Over: CREEK

E 9TH,N 6TH, LaSalle, IL

Built 1988 Load: 32.4 t ADT: 50

FAS268 A/CH 15

Good

Over: MILL RACE

CH 15/S MILL RACE, LaSalle, IL

Built 1937 Load: 32.4 t ADT: 3,450

FAS1277/COMMERCIAL

Good

Over: LONG CREEK

COMMERCIAL ST,W/MAIN, LaSalle, IL

Built 1997 Load: 32.4 t ADT: 1,550

10TH AVE & 4TH ST

Good

Over: MENDOTA CREEK

10TH AVE & 4TH ST, LaSalle, IL

Built 2001 Load: 32.4 t ADT: 50

3RD ST

Good

Over: MENDOTA CR

S EDGE MENDOTA, LaSalle, IL

Built 2006 Load: 32.4 t ADT: 375

LINCOLN EAST/MS222

Good

Over: CLARK RUN (WEST)

EAST OF IL 178, LaSalle, IL

Built 2011 Load: 32.4 t ADT: 425

POST ST

Good

Over: GOOSE CREEK

150 FT E OF IL 23, LaSalle, IL

Built 1994 Load: 32.4 t ADT: 700

WASSON STREET

Good

Over: PRAIRIE CREEK

W OF BRONSON STR, LaSalle, IL

Built 1985 Load: 32.4 t ADT: 775

Otter Creek

Good

Over: N trib. of Coal Run

2,300' S. of RT.18, LaSalle, IL

Built 2012 Load: 32.4 t ADT: 1,500

VERMILION ST.

Good

Over: COAL RUN CREEK

S,SPRING-N BROMBACH, LaSalle, IL

Built 1995 Load: 32.4 t ADT: 500

DIVISION ST

Good

Over: PRAIRIE CREEK

1/2 BLK E OF WALNUT, LaSalle, IL

Built 2012 Load: 32.4 t ADT: 425

BAZORE ST (FAU 614

Good

Over: PRAIRIE CREEK

1/2 BLK E OF WALNUT, LaSalle, IL

Built 2013 Load: 32.4 t ADT: 3,300

Remington Rd

Good

Over: Otter Creek

1/8 Mi N Marilla Rd, LaSalle, IL

Built 2014 Load: 32.4 t ADT: 300

OAK ST IN TONICA

Good

Over: BAILEY CREEK

OAK ST OV BAILEY CR, LaSalle, IL

Built 1990 Load: 32.4 t ADT: 50

STARVED RCK LODGE

Good

Over: FOX CANYON

N 2675-E880, LaSalle, IL

Built 1994 Load: 32.4 t ADT: 500

FAP 332(ILL 1)

Good

Over: STREAM

.5 MI S BIRDS RD, Lawrence, IL

Built 1998 Load: 32.4 t ADT: 3,600

TR-188

Good

Over: FLAT BRANCH

O.5 MI N PINKSTAFF, Lawrence, IL

Built 1978 Load: 32.4 t ADT: 75

TR-83

Good

Over: THE SLOUGH

2.5 MI NW PETROLIA, Lawrence, IL

Built 1980 Load: 32.4 t ADT: 75

TR-231A

Good

Over: ENGLAND DITCH

1 MI SW BILLETT, Lawrence, IL

Built 1981 Load: 32.4 t ADT: 35

TR-84

Good

Over: TRIB RACCOON CREEK

7.5 MI W ST FRANCISV, Lawrence, IL

Built 1986 Load: 32.4 t ADT: 20

TR-98

Good

Over: MUDDY CREEK

0.5 MI N PETROLIA, Lawrence, IL

Built 1996 Load: 32.4 t ADT: 125

TR 199

Good

Over: INDIAN CREEK

2.5 MI SE BRIDGEPORT, Lawrence, IL

Built 2004 Load: 32.4 t ADT: 75

TR-27

Good

Over: STREAM

1 MI SW CHAUNCEY, Lawrence, IL

Built 2004 Load: 32.4 t ADT: 50

TR 253

Good

Over: CREEK

1.9 MI NW ST FRANCIS, Lawrence, IL

Built 2004 Load: 32.4 t ADT: 100

TR 47

Good

Over: BIRCH CREEK

3 MI W PINKSTAFF, Lawrence, IL

Built 2006 Load: 32.4 t ADT: 50

TR 237

Good

Over: DRAIN DITCH

5 MI SSE BRIDGEPORT, Lawrence, IL

Built 2006 Load: 32.4 t ADT: 50

TR 32

Good

Over: MAD CREEK

0.75 MI E CHAUNCEY, Lawrence, IL

Built 2009 Load: 32.4 t ADT: 20

TR 72

Good

Over: SEED CREEK

2.5 MI SW BRIDGEPORT, Lawrence, IL

Built 2007 Load: 32.4 t ADT: 35

TR 249

Good

Over: DRAINAGE DITCH

5.5 MI SE BRIDGEPORT, Lawrence, IL

Built 2009 Load: 32.4 t ADT: 35

FAS 1803 CH 17

Good

Over: OTTER POND DRAIN DT

3 MI E PICKSTAFF, Lawrence, IL

Built 2009 Load: 32.4 t ADT: 250

TR 243

Good

Over: TRIB BONPAS CREEK

6.75 MI S SUMNER, Lawrence, IL

Built 2008 Load: 32.4 t ADT: 35

TR 10 A

Good

Over: PAUL CREEK

4 MI SSW CHAUNCEY, Lawrence, IL

Built 2011 Load: 32.4 t ADT: 25

Showing 18,651-18,700 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.