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

I-74

Good

Over: MUD CREEK

0.5 MI W OF I-80, Henry, IL

Built 1962 Load: 89.1 t ADT: 15,000

I-57 SB

Good

Over: SPRING CREEK

2.5 MI S BUCKLEY INT, Iroquois, IL

Built 2012 Load: 89.1 t ADT: 8,800

I-57 NB

Good

Over: SPRING CREEK

2.5MI S BUCKLEY INTR, Iroquois, IL

Built 2012 Load: 89.1 t ADT: 8,800

US 51

Good

Over: STREAM

1 MI N OF MAKANDA, Jackson, IL

Built 1977 Load: 89.1 t ADT: 6,400

EAST STAGECOACH RO

Good

Over: CLEAR CREEK

1 MILE WEST WARREN, Jo Daviess, IL

Built 2020 Load: 89.1 t ADT: 850

IL 31 RMP 2 US30

Good

Over: STREAM

under WB US30 ramp, Kane, IL

Built 2014 Load: 89.1 t ADT: 5,250

US 30

Good

Over: DITCH

200' W of IL31, Kane, IL

Built 2014 Load: 89.1 t ADT: 40,300

Armour Rd (FAU 617

Good

Over: IL Central RR

0.3 M W of IL 50, Kankakee, IL

Built 2024 Load: 89.1 t ADT: 8,050

FAS 379-IL 167

Good

Over: North Creek

0.09 mi SE of 34&167, Knox, IL

Built 2020 Load: 89.1 t ADT: 1,150

FAS 379-IL 167

Good

Over: North Creek

.15mi S US 34/IL 167, Knox, IL

Built 2020 Load: 89.1 t ADT: 1,450

COUNTY HIGHWAY 08

Good

Over: HERMON CREEK

S.CTR-18-T9NR2E, Knox, IL

Built 1972 Load: 89.1 t ADT: 425

TR 76

Good

Over: TRIB TO POPE CREEK

SE1/4 SEC11 R1E T13N, Knox, IL

Built 1997 Load: 89.1 t ADT: 50

TR 171

Good

Over: TRIB TO SPOON RIVER

NE-12-T11NR3E, Knox, IL

Built 1996 Load: 89.1 t ADT: 25

TR 81

Good

Over: TRIB TO FORMAN CREEK

2308N 1788E, Knox, IL

Built 2012 Load: 89.1 t ADT: 50

F-F STREET

Good

Over: COURT CREEK

0.02 S. OF E-E ST., Knox, IL

Built 1994 Load: 89.1 t ADT: 50

IL 22

Good

Over: W FK N BR CHICAGO RV

0.1 M W I-94, Lake, IL

Built 1956 Load: 89.1 t ADT: 28,700

ILL 18

Good

Over: EAGLE CR

1.70 MI.W.OF ILL 23, LaSalle, IL

Built 1972 Load: 89.1 t ADT: 3,550

ILL 23 FAP 68

Good

Over: GOOSE CR

0.7 MI N OF US 6, LaSalle, IL

Built 1977 Load: 89.1 t ADT: 18,300

US 6

Good

Over: CLARK RUN CREEK

0.71 MI E OF ILL 178, LaSalle, IL

Built 1984 Load: 89.1 t ADT: 5,700

TR 57A

Good

Over: GOOSEBERRY CR

3210 E, 2600 N, Livingston, IL

Built 1986 Load: 89.1 t ADT: 50

TR 268C

Good

Over: BR OF VERMILION R

695 N, 3200 E, Livingston, IL

Built 1985 Load: 89.1 t ADT: 50

TR 291

Good

Over: SPANISH CR

4 MI S CARLINVILLE, Macoupin, IL

Built 1977 Load: 89.1 t ADT: 150

FAI 55 FR#1709

Good

Over: STREAM

SE FAI 55 LIVINGSTON, Madison, IL

Built 1973 Load: 89.1 t ADT: 200

IL 159

Good

Over: JUDYS BRANCH CRK

.21 MI N I270, Madison, IL

Built 1991 Load: 89.1 t ADT: 26,700

IL 255 - FAP 310

Good

Over: Drains to retention

just S OF IL 111, Madison, IL

Built 2001 Load: 89.1 t ADT: 23,000

IL 255 - FAP 310

Good

Over: ROCK CREEK

N OF SEMINARY RD, Madison, IL

Built 2010 Load: 89.1 t ADT: 13,600

IL 255 (FAP 310)

Good

Over: W. FORK WOODRIVER CR

.4MI E. OF VONNAHMEN, Madison, IL

Built 2008 Load: 89.1 t ADT: 14,900

TR 178

Good

Over: TRIB TO SHERRY CK

2.0 MI N PRAIRIETOWN, Madison, IL

Built 1982 Load: 89.1 t ADT: 250

TR 26

Good

Over: Scholes Branch

T13N-R9E-4PM Sec 6, Marshall, IL

Built 2013 Load: 89.1 t ADT: 25

TR 197

Good

Over: DOUGLAS CREEK

E.CTR-34-T14NR4W, Mercer, IL

Built 1995 Load: 89.1 t ADT: 25

IL 267

Good

Over: COAL CREEK

3.5M S US 67, Morgan, IL

Built 1942 Load: 89.1 t ADT: 2,150

US 67

Good

Over: UNNAMED STREAM

4.2M N US67/I72/US36, Morgan, IL

Built 1998 Load: 89.1 t ADT: 5,450

US 67

Good

Over: N LITTLE SANDY CR

7.75 MI S I72/US36, Morgan, IL

Built 2007 Load: 89.1 t ADT: 4,250

US 67

Good

Over: SANDY CREEK TRIB

4.75 MI S I 72/US 36, Morgan, IL

Built 2003 Load: 89.1 t ADT: 4,250

FAP 320 (IL 121)

Good

Over: DUNN BRANCH

3.0 MI E OF BETHANY, Moultrie, IL

Built 1969 Load: 89.1 t ADT: 4,600

FIRST AVE

Good

Over: RYLEY DITCH

EAST EDGE ROCHELLE, Ogle, IL

Built 2004 Load: 89.1 t ADT: 2,200

SW RAMP I-88 & IL2

Good

Over: STREAM

0.2 MI W OF ILL 251, Ogle, IL

Built 1972 Load: 89.1 t ADT: 600

SMITHVILLE RD

Good

Over: TIBER CREEK

S.CTR-27-TRIVOLA TWP, Peoria, IL

Built 1977 Load: 89.1 t ADT: 475

GRAHAM CHAPEL ROAD

Good

Over: TRIB OF KICKAPOO CR

SE1/4-24-LIMESTONE, Peoria, IL

Built 2023 Load: 89.1 t ADT: 525

FAS 495

Good

Over: MADDEN CREEK

NORTH OF MANSFIELD, Piatt, IL

Built 1971 Load: 89.1 t ADT: 1,850

I-72

Good

Over: TRIB BLUE CREEK

0.36 mi E TR 362, Pike, IL

Built 1988 Load: 89.1 t ADT: 9,900

TR 115

Good

Over: Hadley Creek Trib.

3.5 mi NE Barry, Pike, IL

Built 2013 Load: 89.1 t ADT: 50

IL 4 (MAIN ST.)

Good

Over: POLECAT CR TRIBUTARY

.5M S MANSION-CHATHM, Sangamon, IL

Built 1978 Load: 89.1 t ADT: 18,500

JEFFERSON RD/ CH 2

Good

Over: HAZEL CREEK

2.00MI E ILL 13, St. Clair, IL

Built 1972 Load: 89.1 t ADT: 275

FAS 331

Good

Over: GLENBURN CREEK

1.75 MI N OF OAKWOOD, Vermilion, IL

Built 1967 Load: 89.1 t ADT: 1,200

FAP 709(US 136)

Good

Over: STREAM

2 MI NW ARMSTRONG, Vermilion, IL

Built 1997 Load: 89.1 t ADT: 1,550

US 67

Good

Over: DRAINAGE DITCH

1.25MI S of IL 116, Warren, IL

Built 2002 Load: 89.1 t ADT: 3,350

US 67

Good

Over: DRAINAGE DITCH

0.6MI S of IL 116, Warren, IL

Built 2002 Load: 89.1 t ADT: 3,400

US 67

Good

Over: DRAINAGE DITCH

0.6MI N of IL 116, Warren, IL

Built 2002 Load: 89.1 t ADT: 4,000

FAS 450-CH 19

Good

Over: BR SWAN CR

W.CTR-22-T8NR1W, Warren, IL

Built 1982 Load: 89.1 t ADT: 550

Showing 25,451-25,500 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.