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

SLANE RD - TR 186

Poor

Over: BR PRINCE RUN

NW-20-AKRON, Peoria, IL

Built 1962 Load: 14.9 t ADT: 50

TR 73

Poor

Over: WOLF CREEK

4.9 MI NW WINDSOR, Shelby, IL

Built 1977 Load: 14.9 t ADT: 25

PERKINS RD.

Poor

Over: COUNTY DITCH NO. 1

3 MI S.E. PROPHETSTO, Whiteside, IL

Built 1966 Load: 14.9 t ADT: 75

TR 7 MONA

Poor

Over: STREAM

1580E,3600N, Ford, IL

Built 1967 Load: 15.2 t ADT: 25

TR 91 B

Poor

Over: PIKE CREEK

2.8 MI. E. ILL 1, Iroquois, IL

Built 1958 Load: 15.2 t ADT: 200

COUNTY HIGHWAY 2

Poor

Over: GALUM CREEK

NE 1/4 SEC 1-7-3, Jackson, IL

Built 1977 Load: 15.2 t ADT: 250

FAS-2869 (ILL-37)

Poor

Over: STREAM

5.2 MI S ILL-148, Jefferson, IL

Built 1921 Load: 15.2 t ADT: 4,150

TR-435A

Poor

Over: STREAM

0.5 MI S BELLE RIVE, Jefferson, IL

Built 1993 Load: 15.2 t ADT: 10

CH 13

Poor

Over: PIKE CR

1.1 MI NE MOMENCE, Kankakee, IL

Built 1960 Load: 15.2 t ADT: 850

TR-4

Poor

Over: BRUSH CREEK

E 0TH N 3905, LaSalle, IL

Built 1972 Load: 15.2 t ADT: 100

N. COON ROAD

Poor

Over: BRUSH CREEK

3.0 MI E ORANGEVILLE, Stephenson, IL

Built 1947 Load: 15.2 t ADT: 25

TR 10B MFT120

Poor

Over: LOUIS CREEK

3.5MI W BUCKLEY .2 S, Iroquois, IL

Built 1962 Load: 15.6 t ADT: 20

VAN DYKE RD

Poor

Over: MIDDLE AUXSABLE CK

WEST OF MCANNA, Kendall, IL

Built 1972 Load: 15.6 t ADT: 50

CH 23 EXT

Poor

Over: ILL CENTRAL RR

WALNUT ST OVER IC RR, LaSalle, IL

Built 1942 Load: 15.6 t ADT: 1,600

MAEYSTOWN MSS 1030

Poor

Over: MAEYSTOWN CREEK

SW CL MAEYSTOWN, Monroe, IL

Built 1941 Load: 15.6 t ADT: 225

HARRISON STREET

Poor

Over: CURTIS CREEK

ON HARRISON AT 26TH, Adams, IL

Built 1967 Load: 15.9 t ADT: 7,500

TR 141

Poor

Over: BRUSHY BRANCH

4 MI SE STONINGTON, Christian, IL

Built 1956 Load: 15.9 t ADT: 20

TR 327

Poor

Over: SPRINGSIDE BRANCH

1 MI E PANA, Christian, IL

Built 1900 Load: 15.9 t ADT: 1,100

FAS-801 (CH 16)

Poor

Over: BIG MUDDY CREEK

1.2 MI W INGERHAM, Clay, IL

Built 1951 Load: 15.9 t ADT: 450

COTTAGE GROVE AVE

Poor

Over: LITTLE CAL RIV

0.5 M N US 6, Cook, IL

Built 1932 Load: 15.9 t ADT: 2,975

TR 93

Poor

Over: N FK OF RILEY CREK

0.5 MI E OF NAUVOO, Hancock, IL

Built 1974 Load: 15.9 t ADT: 75

MARION & ROSNEY

Poor

Over: CNTRYCLB BR SUGAR CR

0.5 MI NE 9& 150, McLean, IL

Built 1946 Load: 15.9 t ADT: 200

GRAFF RD - TR 314

Poor

Over: M. F. SUGAR CREEK

SW-26-T23NR2W, Tazewell, IL

Built 1926 Load: 15.9 t ADT: 50

TR 3

Poor

Over: BR MID HEND CR

NW-2-T12NR1W, Warren, IL

Built 1974 Load: 15.9 t ADT: 50

STONEBRIDGE ROAD

Poor

Over: HICKORY CREEK TRIB

0.01 M N OF IRONWOOD, Will, IL

Built 1980 Load: 15.9 t ADT: 275

TR.80

Poor

Over: MUD CREEK

1125 EAST 350 NORTH, Woodford, IL

Built 1977 Load: 15.9 t ADT: 75

TR 166

Poor

Over: MCCURDY BRANCH

2.1 MI S VERSAILLES, Brown, IL

Built 1915 Load: 16.2 t ADT: 50

FAS1240/CH14/Peru

Poor

Over: ADAMS CREEK

SEATONVILLE, Bureau, IL

Built 1987 Load: 16.2 t ADT: 475

TR 272 A

Poor

Over: OAK BRANCH

5MI SE STONINGTON, Christian, IL

Built 1949 Load: 16.2 t ADT: 50

IL 116

Poor

Over: SPOON RIVER

W EDGE LONDON MILLS, Fulton, IL

Built 1979 Load: 16.2 t ADT: 1,600

TOWER ROAD

Poor

Over: CC&P RR

500' S. Bahr Rd., Kane, IL

Built 1945 Load: 16.2 t ADT: 425

OR 2500 UTICA SHOR

Poor

Over: CLARK RUN

N 2853,E 790, LaSalle, IL

Built 1976 Load: 16.2 t ADT: 1,400

FIREHOUSE RD(1300)

Poor

Over: LONG CREEK

CITY OF LONG CREEK, Macon, IL

Built 1960 Load: 16.2 t ADT: 225

IL 140

Poor

Over: Trib to Indian Creek

1.9 mi E of IL 255, Madison, IL

Built 1927 Load: 16.2 t ADT: 8,050

TR 374

Poor

Over: HURRICANE CR

2.8 MI SE WITT, Montgomery, IL

Built 1900 Load: 16.2 t ADT: 25

LORANCE ROAD

Poor

Over: BRANCH SPOON RIVER

SW-12-T11NR5E, Peoria, IL

Built 1961 Load: 16.2 t ADT: 50

PFEIFFER RD-TR 25

Poor

Over: BR LA MARSH CREEK

NC1NENE114 33 T8NR7E, Peoria, IL

Built 1980 Load: 16.2 t ADT: 950

TR 182

Poor

Over: BR NORTH CREEK

1.25 MI NE HUEGELY, Washington, IL

Built 1920 Load: 16.2 t ADT: 10

TR 111A

Poor

Over: SPRING BRANCH

2.5 M W. SHARPSBURG, Christian, IL

Built 1954 Load: 16.5 t ADT: 175

EAST LAKE AVE EXT

Poor

Over: W F N BR CHI RIV

0.2 M W ILL 43 P14, Cook, IL

Built 1961 Load: 16.5 t ADT: 22,400

FAS-1680 (CH-16)

Poor

Over: Stream

3.5M S IL-16, Edgar, IL

Built 1941 Load: 16.5 t ADT: 300

TR I16

Poor

Over: W FK OF BEAR CREEK

1.0 E ELVASTON, Hancock, IL

Built 1969 Load: 16.5 t ADT: 50

TR 140

Poor

Over: TRIB PRAIRE CR

.8 MI S OF FAS 321, Iroquois, IL

Built 1962 Load: 16.5 t ADT: 75

TR 22

Poor

Over: PRAIRIE CR

4MI NW GILMAN, Iroquois, IL

Built 1934 Load: 16.5 t ADT: 25

TR 228

Poor

Over: JEFFERSON CR

1.5 MI S. CH 47, Iroquois, IL

Built 1910 Load: 16.5 t ADT: 25

CO HWY 1

Poor

Over: WHITE WALNUT CREEK

1.7 MI N ILL 154, Perry, IL

Built 1959 Load: 16.5 t ADT: 600

TR 465A

Poor

Over: SIXMILE CREEK

.75 MI W P. HILL, Pike, IL

Built 1969 Load: 16.5 t ADT: 200

READER AVE

Poor

Over: UNNAMED STREAM

MOUNDS, Pulaski, IL

Built 1900 Load: 16.5 t ADT: 10

74TH ST/ FAU 9253

Poor

Over: SO RR 5 W BELLEVILLE

0.5 N IL 13, St. Clair, IL

Built 1955 Load: 16.5 t ADT: 5,450

TR 191

Poor

Over: BRANCH OF BEAVER CR

3M SW GREENVILLE, Bond, IL

Built 1901 Load: 16.8 t ADT: 25

Showing 25,951-26,000 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.