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

IL 94

Good

Over: DEER CREEK

6.3M N US136,CARTHAG, Hancock, IL

Built 1994 Load: 38.9 t ADT: 2,000

TR 0311

Good

Over: LONG CREEK

0.5MI NO. CARTHAGE, Hancock, IL

Built 1989 Load: 38.9 t ADT: 75

IL 81

Good

Over: CAMP CREEK TRIB.

.7 MI W OF CAMBRIDGE, Henry, IL

Built 1994 Load: 38.9 t ADT: 1,650

WEST ROAD

Good

Over: TRIB OF SIX MILE CRK

DOWELL WEST CORP LIM, Jackson, IL

Built 2003 Load: 38.9 t ADT: 500

US 30

Good

Over: W BR BIG ROCK CREEK

.6 E OF DEKALB CO L, Kane, IL

Built 1984 Load: 38.9 t ADT: 5,050

US 30

Good

Over: E BR BIG ROCK CREEK

1.7M E OF KANE-DEK L, Kane, IL

Built 1984 Load: 38.9 t ADT: 5,300

Illinois Avenue

Good

Over: 7th Avenue Creek

0.10 MI S of IL 64, Kane, IL

Built 2021 Load: 38.9 t ADT: 700

Indiana Avenue

Good

Over: 7th Avenue Creek

0.15 MI S of IL 64, Kane, IL

Built 2021 Load: 38.9 t ADT: 1,800

South Avenue (MS40

Good

Over: 7th Avenue Creek

0.25 MI S of IL 64, Kane, IL

Built 2021 Load: 38.9 t ADT: 900

IL 1

Good

Over: SPRING CREEK

4.5 MI. S. IL 17, Kankakee, IL

Built 1993 Load: 38.9 t ADT: 4,450

ILL 17

Good

Over: HORSE CREEK

.7MI E OF HERCHER RD, Kankakee, IL

Built 1997 Load: 38.9 t ADT: 3,650

US 52

Good

Over: SARATOGA CR

4.8 MI W OF ILL 47, Kendall, IL

Built 2017 Load: 38.9 t ADT: 1,400

IL 43

Good

Over: N BR CHICAGO RIVER

0.3 M S OF IL 60, Lake, IL

Built 2003 Load: 38.9 t ADT: 16,400

IL 71

Good

Over: INTERMIT STREAM

5.90 MI E OF IL 178, LaSalle, IL

Built 2007 Load: 38.9 t ADT: 1,700

TR 314

Good

Over: BUCK CREEK

E 18, N 3450, LaSalle, IL

Built 1998 Load: 38.9 t ADT: 675

IL 17 FAP 41

Good

Over: DRAINAGE DITCH

3.4 MI E OF IL 47, Livingston, IL

Built 2007 Load: 38.9 t ADT: 2,300

TR-134B

Good

Over: Wolf Creek

2192N, 1710E, Livingston, IL

Built 2016 Load: 38.9 t ADT: 25

TR 32 (600E)

Good

Over: MOLE CREEK

4 Miles SE of Long Point, Livingston, IL

Built 2020 Load: 38.9 t ADT: 75

FAS-1464 (CH-16)

Good

Over: Prairie Creek Ditch

0.04 S County Line, Logan, IL

Built 2018 Load: 38.9 t ADT: 225

FAS 733(CH 20)

Good

Over: Macoupin Creek

.76 mi S TR 205, Macoupin, IL

Built 2012 Load: 38.9 t ADT: 450

Selmaville Road

Good

Over: CROOKED CREEK

3.5 MI S US-50, Marion, IL

Built 1984 Load: 38.9 t ADT: 2,550

TR 218C

Good

Over: VERMILION CREEK

0.5 MI W SALEM, Marion, IL

Built 1985 Load: 38.9 t ADT: 600

TR-388

Good

Over: FULTON CREEK

4.5 MI NE CARTTER, Marion, IL

Built 1988 Load: 38.9 t ADT: 225

TR-138

Good

Over: CROOKED CREEK

3 MI SE ODIN, Marion, IL

Built 1990 Load: 38.9 t ADT: 100

TR-58A

Good

Over: DEER CREEK

N OF PATOKA, Marion, IL

Built 1992 Load: 38.9 t ADT: 100

BOTTERMAN ROAD

Good

Over: UNAMED TRIB COON CRK

0.4 MI W SEEMAN RD, McHenry, IL

Built 2004 Load: 38.9 t ADT: 350

US 24/ FAP 317

Good

Over: ROOKS CREEK

5.12, McLean, IL

Built 1995 Load: 38.9 t ADT: 4,200

US 136/FAP 315

Good

Over: PRAIRIE CREEK

7.04 MI W OF US 51, McLean, IL

Built 2006 Load: 38.9 t ADT: 3,000

TR 97

Good

Over: TRIB EDWARDS RIVER

SE1/4 SEC32 T15NR2W, Mercer, IL

Built 2000 Load: 38.9 t ADT: 25

TR 24

Good

Over: LAKE FORK CREEK

3.6 MI NW WALSHVILLE, Montgomery, IL

Built 1983 Load: 38.9 t ADT: 50

LOWELL PARK ROAD

Good

Over: UNNAMED CREEK

SW EDGE OF MT MORRIS, Ogle, IL

Built 2005 Load: 38.9 t ADT: 950

FAS 1517(US 150)

Good

Over: MADDEN CREEK

.5 MI E OF MANSFIELD, Piatt, IL

Built 1993 Load: 38.9 t ADT: 1,650

TR 7A (OLD US 36)

Good

Over: NORFOLK SOUTHERN RR

S NEW HNBL BR E ABUT, Pike, IL

Built 1990 Load: 38.9 t ADT: 150

IL 96

Good

Over: HORTON CREEK

2M NW ROCKPORT, Pike, IL

Built 1991 Load: 38.9 t ADT: 1,100

ILL 106

Good

Over: E BRANCH KISER CREEK

7.5 MI SE BARRY, Pike, IL

Built 1994 Load: 38.9 t ADT: 1,600

FAS 1930

Good

Over: BARREN CREEK

1 MI NW BAY CITY, Pope, IL

Built 1967 Load: 38.9 t ADT: 125

RUBY YEWELL

Good

Over: FLICK BRANCH

3.9MI NW GOLCONDA, Pope, IL

Built 2017 Load: 38.9 t ADT: 25

TR 60

Good

Over: BRIAR CREEK

2 MI E OF PULASKI, Pulaski, IL

Built 1984 Load: 38.9 t ADT: 25

CH 16

Good

Over: MAXWELL CREEK

2 MILE S. EDEN, Randolph, IL

Built 1992 Load: 38.9 t ADT: 2,350

CH 62

Good

Over: MILL CR

5 MI SW OF MILAN, Rock Island, IL

Built 1986 Load: 38.9 t ADT: 950

NEW IL 13 EB

Good

Over: POSSUM TAIL BRANCH

2.1 MI E SAL/WMSN CL, Saline, IL

Built 1997 Load: 38.9 t ADT: 9,100

NEW IL 13 WB

Good

Over: POSSUM TAIL BRANCH

2.1 MI E SAL/WMSN CL, Saline, IL

Built 1997 Load: 38.9 t ADT: 9,100

US 45

Good

Over: PANKEY BRANCH

1 MI SW HARRISBURG, Saline, IL

Built 1992 Load: 38.9 t ADT: 4,400

TR 67A

Good

Over: TRIB TO BRUSH CREEK

0.7 MI E US RT 45, Saline, IL

Built 1986 Load: 38.9 t ADT: 25

CH-16 (Tuller Rd)

Good

Over: Stream

1.3 MI S US 45, Saline, IL

Built 2003 Load: 38.9 t ADT: 400

HAGAN ROAD

Good

Over: INDIAN CREEK

2 MI NW ELDORADO, Saline, IL

Built 2020 Load: 38.9 t ADT: 25

CH 23

Good

Over: LITTLE WABASH RIVER

3.9 MI W OF SIGEL, Shelby, IL

Built 1895 Load: 38.9 t ADT: 200

TR 138

Good

Over: TRIB FLAT BRANCH

2 MI W 2 MI N WESTEV, Shelby, IL

Built 1984 Load: 38.9 t ADT: 75

I-70 WB

Good

Over: KCSRR, CSXRR

QuadLevel 55/70WB to 70WB, St. Clair, IL

Built 2014 Load: 38.9 t ADT: 21,000

OLD IL 26

Good

Over: RICHLAND CREEK TRIB.

0.5 MI S ORANGEVILLE, Stephenson, IL

Built 1991 Load: 38.9 t ADT: 775

Showing 23,151-23,200 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.