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

TR 365 Lilac Road

Good

Over: Fork Creek

2.0 Mi S St Jacob, Madison, IL

Built 2015 Load: 32.4 t ADT: 150

FAS 737 Seiler Rd

Good

Over: E Fork Wood River Ck

1.3 Mi E Fosterburg, Madison, IL

Built 2015 Load: 32.4 t ADT: 1,500

CH-55 (Woodburn Rd

Good

Over: Br E Frk Wood River

2.0 Mi NE Fosterburg, Madison, IL

Built 2017 Load: 32.4 t ADT: 925

TR 261A E Mick Roa

Good

Over: Wendell Branch

3.0 Mi N of Troy, Madison, IL

Built 2017 Load: 32.4 t ADT: 200

TR 363 E Mill Ck R

Good

Over: North Fork Mill Ck

4 Mi SE Troy, Madison, IL

Built 2022 Load: 32.4 t ADT: 100

TR 171 Jerusalem R

Good

Over: Trib to Cahokia Cr

2 Mi SW of Carpenter, Madison, IL

Built 2020 Load: 32.4 t ADT: 250

FAU 8966

Good

Over: NS RR

0.40MI NORTH IL3, Madison, IL

Built 2009 Load: 32.4 t ADT: 1,025

MS-7910 N Rodgers

Good

Over: W Fork Wood River Cr

Alton- S of Beltline, Madison, IL

Built 2015 Load: 32.4 t ADT: 1,700

Pontoon Road

Good

Over: UPRR, KCSRR, NSRR

2.5 mile S of I-270, Madison, IL

Built 2010 Load: 32.4 t ADT: 8,750

MILL ST/MSS 1307

Good

Over: CANTEEN CREEK

.8MI SE IL 159, Madison, IL

Built 2003 Load: 32.4 t ADT: 950

MULBERRY ST/TR 205

Good

Over: CANTEEN CREEK

SE SEC 27 T3N R8W, Madison, IL

Built 2007 Load: 32.4 t ADT: 700

South Clinton St.

Good

Over: Canteen Creek

0.1 Mi E of IL 159, Madison, IL

Built 2014 Load: 32.4 t ADT: 1,050

Summit Ave.

Good

Over: Brush Creek

50 Ft S Johnson Hill, Madison, IL

Built 2014 Load: 32.4 t ADT: 2,900

SCHWARZ RD/FAU 889

Good

Over: UNKNOWN CREEK

.2 MI S. SCHWARZ, Madison, IL

Built 1986 Load: 32.4 t ADT: 900

GOSHEN RD FAU 8905

Good

Over: TRIB TO DUNLAP LAKE

1.4MI E IL 159, Madison, IL

Built 2003 Load: 32.4 t ADT: 5,550

GERBER RD FAU 8894

Good

Over: TRIB TO DUNLAP LAKE

75FT N EAST LAKE DR., Madison, IL

Built 2009 Load: 32.4 t ADT: 1,300

E LAKE DR FAU 8895

Good

Over: TRIB TO DUNLAP LAKE

0.05 MI E GERBER RD, Madison, IL

Built 2009 Load: 32.4 t ADT: 800

Veterans Honor Prk

Good

Over: CSXT Railroad

0.1 Mi N Trestle Rd, Madison, IL

Built 2014 Load: 32.4 t ADT: 4,200

PIERCE LN/FAU 8985

Good

Over: ROCKY FORK CK

1.8MI NW ALTON, Madison, IL

Built 2010 Load: 32.4 t ADT: 3,100

NINTH ST

Good

Over: DRAINAGE CHANNEL

0.5 MI N ILL 143, Madison, IL

Built 1980 Load: 32.4 t ADT: 4,750

OLD US 51 (SBI 2)

Good

Over: DEER CREEK

NCL PATOKA, Marion, IL

Built 2001 Load: 32.4 t ADT: 450

CH-33

Good

Over: TURKEY RUN

2 MI SE SANDOVAL, Marion, IL

Built 1909 Load: 32.4 t ADT: 625

TR-249

Good

Over: FULKS CREEK

S PART SALEM, Marion, IL

Built 1966 Load: 32.4 t ADT: 1,300

CH 20 Bee Branch R

Good

Over: Dums Creek

4 Mi SE of Alma, Marion, IL

Built 2016 Load: 32.4 t ADT: 275

TR-262

Good

Over: NORTH FORK

8 MI E VERNON, Marion, IL

Built 1973 Load: 32.4 t ADT: 25

FAS-2719 (CH-8)

Good

Over: EAST FORK SLOUGH

2 MI NE ALMA, Marion, IL

Built 1986 Load: 32.4 t ADT: 800

CH-20

Good

Over: DAVIDSON CREEK

W EDGE TONTI, Marion, IL

Built 1989 Load: 32.4 t ADT: 425

CH-20

Good

Over: CREEK

1 MI N SALEM, Marion, IL

Built 1989 Load: 32.4 t ADT: 500

CH-27

Good

Over: TRIB SCHNIEDER BR

2 MI NE KINMUNDY, Marion, IL

Built 1989 Load: 32.4 t ADT: 175

CH-34

Good

Over: NORTH FORK CREEK

2 MI E VERNON, Marion, IL

Built 1990 Load: 32.4 t ADT: 150

CH-19

Good

Over: BRUBAKER CREEK

2 MI SE SALEM, Marion, IL

Built 1994 Load: 32.4 t ADT: 575

TR-148

Good

Over: RACCOON CREEK

1.3 MI NE WALNUT HIL, Marion, IL

Built 1994 Load: 32.4 t ADT: 150

TR-396

Good

Over: KASKASKIA RIVER

2 MI NE KINMUNDY, Marion, IL

Built 1994 Load: 32.4 t ADT: 125

TR-222

Good

Over: TRIB CROOKED CREEK

4.5 MI S SALEM, Marion, IL

Built 1994 Load: 32.4 t ADT: 10

TR-100

Good

Over: SCHWARTZ BRANCH

2 MI NNW WALNUT HILL, Marion, IL

Built 1995 Load: 32.4 t ADT: 350

TR 25

Good

Over: CROOKED CREEK

5 MI NE OF KINMUNDY, Marion, IL

Built 1996 Load: 32.4 t ADT: 200

TR 468

Good

Over: LICK BRANCH

8.5 MI SE OF KELL, Marion, IL

Built 1996 Load: 32.4 t ADT: 25

FAS 790

Good

Over: DAVIDSON CREEK

5 MI N SANDOVAL, Marion, IL

Built 1997 Load: 32.4 t ADT: 350

TR 181

Good

Over: TOWN CREEK

3 MI N SALEM, Marion, IL

Built 1997 Load: 32.4 t ADT: 25

TR 335A

Good

Over: ICG RR

2.25 MI N HELM, Marion, IL

Built 1998 Load: 32.4 t ADT: 50

TR 117

Good

Over: LOUSE CREEK

2.5 MI SW PATOKA, Marion, IL

Built 1998 Load: 32.4 t ADT: 75

CH 13

Good

Over: RACCOON CRK

2.5 MI NE WALNUT HIL, Marion, IL

Built 2003 Load: 32.4 t ADT: 350

TR 64

Good

Over: PRAIRIE CRK

1M E OF ODIN, Marion, IL

Built 2000 Load: 32.4 t ADT: 50

TR 333

Good

Over: OLD CAMP CREEK

4 MI ENE CARTTER, Marion, IL

Built 2000 Load: 32.4 t ADT: 50

TR 119

Good

Over: JIMS CREEK

3.5 MI W ALMA, Marion, IL

Built 2000 Load: 32.4 t ADT: 75

TR 388

Good

Over: JAMISON CREEK

5 MI E SALEM, Marion, IL

Built 2000 Load: 32.4 t ADT: 250

TR 528

Good

Over: DUMS CREEK

4.5 MI E IUKA, Marion, IL

Built 2000 Load: 32.4 t ADT: 25

TR 431B

Good

Over: SULPHUR BRANCH

4 MI W KELL, Marion, IL

Built 2001 Load: 32.4 t ADT: 50

TR 249B

Good

Over: CREEK

SE PART OF SALEM, Marion, IL

Built 2001 Load: 32.4 t ADT: 950

FAS 2789

Good

Over: CROOKED CREEK

1 MI W BRUBAKER, Marion, IL

Built 2007 Load: 32.4 t ADT: 300

Showing 19,151-19,200 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.