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 109/OLD STATE R

Poor

Over: BEAVER CREEK

1.25 MI N BECKMEYER, Clinton, IL

Built 1930 Load: 11.7 t ADT: 75

LAKE SHORE DRIVE

Poor

Over: MAIN BR CHICAGO RIV

402 N & 520 E, Cook, IL

Built 1937 Load: 11.7 t ADT: 105,000

21ST ST

Poor

Over: ADDISON CR

0.22MI.W. OF 17TH AV, Cook, IL

Built 1974 Load: 11.7 t ADT: 900

S MILL GROVE ROAD

Poor

Over: YELLOW CREEK

3 MI SE PEARL CITY, Stephenson, IL

Built 1931 Load: 11.7 t ADT: 100

TR-112

Poor

Over: DRAINAGE DITCH

3 MI NNE FRIENDSVILL, Wabash, IL

Built 1909 Load: 11.7 t ADT: 10

TR 118

Poor

Over: ROCK CRK.

3.2 MI SE URSA, Adams, IL

Built 1933 Load: 12.0 t ADT: 125

TR 70

Poor

Over: BEAR CREEK

1.75 MI N PALMER, Christian, IL

Built 1916 Load: 12.0 t ADT: 20

25TH AVE

Poor

Over: SALT CREEK

1.8 M S I-290, Cook, IL

Built 1953 Load: 12.0 t ADT: 7,450

SBI 11 A

Poor

Over: EMBARRAS R OVERFLOW

.5 MI W OF GREENUP, Cumberland, IL

Built 1920 Load: 12.0 t ADT: 200

TR 174

Poor

Over: E FORK OF BIG CREEK

2.8 MI NW OF OLIVER, Edgar, IL

Built 1919 Load: 12.0 t ADT: 75

TR 166

Poor

Over: CAMP CREEK

3.1 MI S DALLAS CITY, Hancock, IL

Built 1923 Load: 12.0 t ADT: 100

MS-1144 (WADE ST)

Poor

Over: RAVINE

1.5 M N LAKE COOK RD, Lake, IL

Built 1963 Load: 12.0 t ADT: 75

ILL 8

Poor

Over: W FORK KICKAPOO CR

.5 MI E OF OAKHILL, Peoria, IL

Built 1932 Load: 12.0 t ADT: 1,850

TR 0325

Poor

Over: DUTCH CREEK

1.5 MI NW SUMMER HIL, Pike, IL

Built 1962 Load: 12.0 t ADT: 25

TR 343

Poor

Over: GRAPE CREEK

1.5 MI E BELGIUM, Vermilion, IL

Built 1968 Load: 12.0 t ADT: 150

TR 725

Poor

Over: GRAPE CREEK

1 MI EAST OF BELGIUM, Vermilion, IL

Built 1966 Load: 12.0 t ADT: 50

TR-1572 Aberdeen R

Poor

Over: Hickory Creek Trib

0.3 MI W OF HARLEM, Will, IL

Built 1980 Load: 12.0 t ADT: 850

ABE STREET

Poor

Over: SPRING CREEK

0.25 MI N JACKSON ST, Will, IL

Built 1911 Load: 12.0 t ADT: 400

CHICAGO HEIGHTS RD

Poor

Over: THORN CREEK

1.5 miles NE of IL-1, Cook, IL

Built 1982 Load: 12.3 t ADT: 6,550

TR 245

Poor

Over: COON CREEK

.5 MI S WOODLAND, Iroquois, IL

Built 1916 Load: 12.3 t ADT: 25

TR-92

Poor

Over: B & O RR

0.5 MI W BRIDGEPORT, Lawrence, IL

Built 1920 Load: 12.3 t ADT: 100

TR 428 8.25 E

Poor

Over: S FORK SANG RIVER

2.2 MI E OF NEW CITY, Sangamon, IL

Built 1954 Load: 12.3 t ADT: 100

OLD, OLD US 36

Poor

Over: Lewis Creek

1.5 W WINCHESTER, Scott, IL

Built 1923 Load: 12.3 t ADT: 75

FAS 1246/CH 24

Poor

Over: COAL CREEK

1.5 MI WEST OF BUDA, Bureau, IL

Built 1955 Load: 12.6 t ADT: 325

TR 184

Poor

Over: N FORK BROUILLETTS C

4.5 MI NNE CHERRY PT, Edgar, IL

Built 1968 Load: 12.6 t ADT: 50

TR-38

Poor

Over: WOLF CREEK

2.5 MI NE BEECHER CY, Effingham, IL

Built 1909 Load: 12.6 t ADT: 50

TR-272

Poor

Over: FLAT CREEK

3 MI SE SHOBONIER, Fayette, IL

Built 1915 Load: 12.6 t ADT: 50

TR 119 DIX

Poor

Over: DICKERSON SLOUGH

640E 50N, Ford, IL

Built 1974 Load: 12.6 t ADT: 75

ILL 3

Poor

Over: DRAINAGE DITCH

0.4 MI S OF ILL 149, Jackson, IL

Built 1933 Load: 12.6 t ADT: 900

FAS 1301 & CH 41

Poor

Over: GRANARY CREEK

2.2 MI N OF ILL 17, Kankakee, IL

Built 1976 Load: 12.6 t ADT: 625

LAKE ROAD

Poor

Over: RAVINE

LAKE RD AT WOODBINE, Lake, IL

Built 1912 Load: 12.6 t ADT: 525

TR 5

Poor

Over: BRUSHY FORK

1 MI NW BIRDS, Lawrence, IL

Built 1916 Load: 12.6 t ADT: 50

TR-26

Poor

Over: FLAT CREEK

1.5 MI NE VERNON, Marion, IL

Built 1909 Load: 12.6 t ADT: 150

TR 234

Poor

Over: CAMP CREEK

SW-15-T4NR3W, McDonough, IL

Built 1900 Load: 12.6 t ADT: 25

TR 17A (CR 2300N)

Poor

Over: Jonathan Creek

1280E CR 2300N, Moultrie, IL

Built 1992 Load: 12.6 t ADT: 35

TR-85

Poor

Over: CREEK

3 MI S LANCASTER, Wabash, IL

Built 1909 Load: 12.6 t ADT: 75

TOWNSHIP RD NO 231

Poor

Over: CAMP CREEK

1 MI E MASSBACH, Jo Daviess, IL

Built 1920 Load: 12.8 t ADT: 50

9TH AVE.

Poor

Over: SILVER CREEK

0.2M.S.OF IL-64, Cook, IL

Built 1955 Load: 13.0 t ADT: 9,100

TR 2C

Poor

Over: Hooper Branch

2.42 MI S CO LN, Iroquois, IL

Built 1968 Load: 13.0 t ADT: 150

COLFAX ST

Poor

Over: TRIB OF SPRING CR

2 BLKS S.OF US 24, Iroquois, IL

Built 1900 Load: 13.0 t ADT: 125

TR-120

Poor

Over: CREEK

2 MI NW VERNOR LAKE, Richland, IL

Built 1909 Load: 13.0 t ADT: 50

TR 341

Poor

Over: SAND CREEK

2.5 MI NW WINDSOR, Shelby, IL

Built 1980 Load: 13.0 t ADT: 25

TR 350

Poor

Over: MCCRANEY CRK

0.88 mi N CH 10, Adams, IL

Built 1916 Load: 13.3 t ADT: 75

WILLOW ROAD

Poor

Over: MUDDY PLUM RIVER

5.5 M SE STOCKTON, Jo Daviess, IL

Built 1950 Load: 13.3 t ADT: 125

TR 199

Poor

Over: STREAM

4.0 MI N HILLSBORO, Montgomery, IL

Built 1900 Load: 13.3 t ADT: 75

TR 0334

Poor

Over: STREAM

4.7 M S WITT, Montgomery, IL

Built 1900 Load: 13.3 t ADT: 25

RAZORVILLE ROAD

Poor

Over: SPRING CREEK

3.2 MI NE OF OREGON, Ogle, IL

Built 1983 Load: 13.3 t ADT: 125

TR 499 A

Poor

Over: STREAM

1 MI SE SIGEL, Shelby, IL

Built 1920 Load: 13.3 t ADT: 50

TR 185

Poor

Over: BR OF BEAVER CREEK

2.5 MI S OF GRNVILLE, Bond, IL

Built 1979 Load: 13.6 t ADT: 200

TR-297B

Poor

Over: Two Mile Slough

3 MI W OF PESOTUM, Champaign, IL

Built 1937 Load: 13.6 t ADT: 175

Showing 25,851-25,900 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.