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 18

Good

Over: BR SUGAR CREEK

0.5 MI W STANFORD, McLean, IL

Built 1994 Load: 48.0 t ADT: 25

TR 124

Good

Over: POPE CREEK

SE-1-T13NR4W, Mercer, IL

Built 1982 Load: 48.0 t ADT: 25

ILL ROUTE 84

Good

Over: SUGAR CR

1 MI N ILL92-E MOLIN, Rock Island, IL

Built 1974 Load: 48.0 t ADT: 3,400

US 150

Good

Over: COAL (WILSON CREEK)

COAL VALLEY, Rock Island, IL

Built 2005 Load: 48.0 t ADT: 3,875

FAI 255 NB

Good

Over: CANTEEN CREEK

0.1MI S MAD CO LINE, St. Clair, IL

Built 1984 Load: 48.0 t ADT: 21,750

IL 4

Good

Over: S1 Trib L Silver Crk

1.1 mi S of US 50, St. Clair, IL

Built 1998 Load: 48.0 t ADT: 6,050

TR-237 (Probst Roa

Good

Over: Trib to Richland Cr

0.5 Mi E. of Ill 159, St. Clair, IL

Built 2017 Load: 48.0 t ADT: 75

TR-171

Good

Over: CREEK

3 MI SW KEENSBURG, Wabash, IL

Built 1981 Load: 48.0 t ADT: 150

FAP 328-US 45

Good

Over: MARTIN CREEK

1.25 MI S GEFF, Wayne, IL

Built 2010 Load: 48.0 t ADT: 3,450

TR-229

Good

Over: Elm River

3.5 Mi. SW Mt. Erie, Wayne, IL

Built 2018 Load: 48.0 t ADT: 50

US 52

Good

Over: PRAIRIE CREEK

0.05 M N HOFF RD, Will, IL

Built 2008 Load: 48.0 t ADT: 6,250

IL 57

Good

Over: DISTILLERY HOLLOW

.3M N 24TH ST RD, Adams, IL

Built 1993 Load: 48.3 t ADT: 4,000

N GALENA ST

Good

Over: CARROLL CREEK

NW EDGE OF MT CARROL, Carroll, IL

Built 2018 Load: 48.3 t ADT: 300

ILL 10(FAS 1513)

Good

Over: CAMP CREEK

.5 MI W OF SEYMOUR, Champaign, IL

Built 2007 Load: 48.3 t ADT: 1,950

FAP 326 (IL 47)

Good

Over: SANGAMON RIVER

4.5 MI N OF US 136, Champaign, IL

Built 2007 Load: 48.3 t ADT: 3,050

JOLIET RD

Good

Over: FLAG CREEK

0.8 M NE DUPAGE CO, Cook, IL

Built 1959 Load: 48.3 t ADT: 12,500

125th

Good

Over: Stony Creek

.04 mi S Benck Dr, Cook, IL

Built 1996 Load: 48.3 t ADT: 600

I-94 Edens Spur WB

Good

Over: Union Pacific RR

1.5 Mi E of Il 43, Cook, IL

Built 2020 Load: 48.3 t ADT: 27,400

I-94 Edens Spur EB

Good

Over: Union Pacific RR

1.5 Mi E of IL 43, Cook, IL

Built 2020 Load: 48.3 t ADT: 27,400

IL 38/FAP 567E

Good

Over: UNION DITCH #1

1.9 MI E SOMONAUK RD, DeKalb, IL

Built 2003 Load: 48.3 t ADT: 7,700

IL 49 (FAP 836)

Good

Over: BRUSHY FORK

1.0 MI N OF US 36, Edgar, IL

Built 1928 Load: 48.3 t ADT: 1,000

TR 195

Good

Over: DIETERICH CREEK

1 MI SW DIETERICH, Effingham, IL

Built 2015 Load: 48.3 t ADT: 75

I-57 NB

Good

Over: POND CREEK

S OF SCL W FRANKFORT, Franklin, IL

Built 2022 Load: 48.3 t ADT: 21,600

FAS 1880 CROCKER R

Good

Over: LITTLE MUDDY RIVER

CROCKER RD, Franklin, IL

Built 1900 Load: 48.3 t ADT: 250

IL 96

Good

Over: DRAINAGE DITCH

.64M S IL 9, NIOTA, Hancock, IL

Built 2004 Load: 48.3 t ADT: 1,700

CO HWY 19

Good

Over: PANTHER CREEK

4.1 MI W OF PLYMOUTH, Hancock, IL

Built 1965 Load: 48.3 t ADT: 350

FS RTE 750

Good

Over: CAVE CREEK

2 MILES N. OF POMONA, IL, Jackson, IL

Built 2000 Load: 48.3 t ADT: 125

OR 163

Good

Over: STREAM

1 MI S STONEFORT, Johnson, IL

Built 2014 Load: 48.3 t

RECKINGER ROAD

Good

Over: INDIAN CREEK

.1MI W FARNSWORTH AV, Kane, IL

Built 2011 Load: 48.3 t ADT: 3,200

I-90

Good

Over: UP RR

2 MI W RANDALL, Kane, IL

Built 2014 Load: 48.3 t ADT: 36,800

I-90

Good

Over: UP RR

2 MI W RANDALL RD, Kane, IL

Built 2013 Load: 48.3 t ADT: 36,800

ILL 8

Good

Over: HICKORY CREEK

2 MI SE OF MAQUON, Knox, IL

Built 2022 Load: 48.3 t ADT: 900

US 34 FAP 587

Good

Over: LITTLE VERMILION

2.2 MI E OF IL 251, LaSalle, IL

Built 2018 Load: 48.3 t ADT: 5,250

ARMINGTON SPUR

Good

Over: SUGAR CREEK

TAZWL CL 1M S ARMGTN, Logan, IL

Built 2004 Load: 48.3 t ADT: 425

IL 255 NB

Good

Over: CAHOKIA DIVERSION

S. CORP LMTS ROXANNA, Madison, IL

Built 1995 Load: 48.3 t ADT: 28,300

IL 255 SB

Good

Over: CAHOKIA DIVERSION

S. CORP LMTS ROXANNA, Madison, IL

Built 1995 Load: 48.3 t ADT: 28,300

US 50

Good

Over: LACKEY CREEK

E UP RR IN SALEM, Marion, IL

Built 2010 Load: 48.3 t ADT: 6,800

ILL 9

Good

Over: WEST FORK SUGAR CR

4.4 MI NW OF ILL 122, McLean, IL

Built 2007 Load: 48.3 t ADT: 1,950

ILL 97 & 123

Good

Over: ROCKY BRANCH CREEK

AT NEW SALEM ST PARK, Menard, IL

Built 1990 Load: 48.3 t ADT: 4,200

NOKOMIS/FILLMORE R

Good

Over: HURRICANE CR

7 M SOUTH NOKOMIS, Montgomery, IL

Built 2010 Load: 48.3 t ADT: 450

DICKINSON LANE

Good

Over: DICKINSON RUN

NE SEC 22 T10N R9E, Peoria, IL

Built 2023 Load: 48.3 t ADT: 25

FAI 72 (WB)

Good

Over: UPRR/RECREATION DR

1.3M W I-55, Sangamon, IL

Built 1966 Load: 48.3 t ADT: 20,450

TR 22

Good

Over: Opossum Creek

2.8 Mi. E Oconee, Shelby, IL

Built 2018 Load: 48.3 t ADT: 100

IL 157

Good

Over: CSXRR

Caseyville N C.L., St. Clair, IL

Built 1990 Load: 48.3 t ADT: 11,300

I-74

Good

Over: LICK CREEK

E OF DANVILLE, Vermilion, IL

Built 1964 Load: 48.3 t ADT: 18,300

TR 66 (McKinley Rd

Good

Over: Branch of Mud Creek

3 MI. SW Oakdale, Washington, IL

Built 2019 Load: 48.3 t ADT: 50

IL 53 SB

Good

Over: JACKSON CREEK

5.5 M S OF I-80, Will, IL

Built 1942 Load: 48.3 t ADT: 15,800

IL 53 NB

Good

Over: JACKSON CREEK

5.5 M S OF I-80, Will, IL

Built 1942 Load: 48.3 t ADT: 15,800

IL 96

Good

Over: JENKINS CREEK

1.3M N IL 61 IN URSA, Adams, IL

Built 1994 Load: 48.6 t ADT: 3,450

IL 89 FAP 698

Good

Over: RI RAILROAD

0.60 MI S OF US 6, Bureau, IL

Built 2008 Load: 48.6 t ADT: 4,450

Showing 24,601-24,650 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.