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

BIG MOUND RD.

Fair

Over: BR. KILBUCK CR.

2.5 N.W. LINDENWOOD, Ogle, IL

Built 1958 Load: 20.4 t ADT: 500

TR 488 11.5E

Fair

Over: BUCKHART CREEK

2.0 S OF BUCKHART, Sangamon, IL

Built 1960 Load: 20.4 t ADT: 75

TR 127

Fair

Over: ANGLE BRANCH

4.0 MI N TOWER HILL, Shelby, IL

Built 1909 Load: 20.4 t ADT: 25

BUNKUM RD/ FAU 916

Fair

Over: DITCH

0.25MI W ILL 157, St. Clair, IL

Built 1960 Load: 20.4 t ADT: 4,050

FAS 376-CH 7

Fair

Over: INDIAN CREEK

NE-20-T12NR6E, Stark, IL

Built 1954 Load: 20.4 t ADT: 350

700E (TR 52)

Fair

Over: TRIB OF INDIAN CREEK

700E, 150N, Stark, IL

Built 1900 Load: 20.4 t ADT: 25

E. BRICK SCHOOL RO

Fair

Over: BR OF WINNESHIEK CRE

0.5 MI E ILL RT 75, Stephenson, IL

Built 1959 Load: 20.4 t ADT: 75

FRANKLIN RD - TR 1

Fair

Over: DILLON CREEK

NE-23-T24NR4W, Tazewell, IL

Built 1958 Load: 20.4 t ADT: 550

RED SHALE HILL-TR1

Fair

Over: LOST CREEK

SW-29-T24NR4W, Tazewell, IL

Built 1957 Load: 20.4 t ADT: 150

STRINGTOWN RD-TR22

Fair

Over: SUGAR CREEK

SW-23-T23NR2W, Tazewell, IL

Built 1960 Load: 20.4 t ADT: 550

ARMINGTON RD-TR 29

Fair

Over: STREAM

S-23-T22NR2W, Tazewell, IL

Built 1962 Load: 20.4 t ADT: 125

TR 149

Fair

Over: LITTLE MACKINAW R

NE-34-T24NR2W, Tazewell, IL

Built 1971 Load: 20.4 t ADT: 75

TR 107

Fair

Over: STREAM

2 MI SW ARMSTRONG, Vermilion, IL

Built 1968 Load: 20.4 t ADT: 50

TR 18

Fair

Over: SO HEND CR

NE-30-T10NR3W, Warren, IL

Built 1973 Load: 20.4 t ADT: 25

SPRINGFIELD AVE

Fair

Over: DRAINAGE DITCH

.4 MI. N. AUBURN ST., Winnebago, IL

Built 1960 Load: 20.4 t ADT: 7,600

EDDIE ROAD

Fair

Over: BR PECATONICA RIVER

AT FISH HATCHERY RD, Winnebago, IL

Built 1936 Load: 20.4 t ADT: 75

LOVE ROAD

Fair

Over: DRY RUN CREEK

0.5 MI S ROCKTON RD, Winnebago, IL

Built 1960 Load: 20.4 t ADT: 1,700

TR 178

Fair

Over: COTTONWOOD BRANCH

3 SW OF OWANECO, Christian, IL

Built 1950 Load: 20.7 t ADT: 20

TR 107

Fair

Over: SPRING BRANCH

4MI N TAYLORVILLE, Christian, IL

Built 1900 Load: 20.7 t ADT: 50

TR 262

Fair

Over: LITTLE CREEK

2 MI W WALNUT PRAIRI, Clark, IL

Built 1947 Load: 20.7 t ADT: 50

HICKS RD

Fair

Over: BUFFALO CREEK TRIB

.82 S OF LAKE COOK R, Cook, IL

Built 1932 Load: 20.7 t ADT: 16,600

HARRISON ST

Fair

Over: S BR CHICAGO RIVER

600 S & 322 W, Cook, IL

Built 1960 Load: 20.7 t ADT: 2,550

TR 49

Fair

Over: HACKETT BRANCH

3.3 MI NE OF TUSCOLA, Douglas, IL

Built 1956 Load: 20.7 t ADT: 225

TR 125

Fair

Over: STREAM

1 MI SE OF KIDLEY, Edgar, IL

Built 1963 Load: 20.7 t ADT: 50

TR 753

Fair

Over: BRANCH SPOON RIVER

W1/2-9-T4NR3E, Fulton, IL

Built 1949 Load: 20.7 t ADT: 50

S. DERINDA ROAD

Fair

Over: LITTLE RUSH CREEK

4 M SE ELIZABETH, Jo Daviess, IL

Built 1937 Load: 20.7 t ADT: 350

TR-8 (W Cnty Ln Rd

Fair

Over: Big Rock Creek

3.0 MI NW BIG ROCK, Kane, IL

Built 1957 Load: 20.7 t ADT: 75

TR-173 (Scott Road

Fair

Over: Big Rock Creek

2.0 MI NW BIG ROCK, Kane, IL

Built 1960 Load: 20.7 t ADT: 175

SUGAR GROVE ROAD

Fair

Over: SUGAR CREEK

1.3 M NW PALMYRA RD, Lee, IL

Built 1962 Load: 20.7 t ADT: 175

TR 32

Fair

Over: PIKE CR

1070 N, 600 E, Livingston, IL

Built 1955 Load: 20.7 t ADT: 75

TR 54A

Fair

Over: TRIB VERMILLION R

3225 N, 750 E, Livingston, IL

Built 1945 Load: 20.7 t ADT: 25

TR 282A

Fair

Over: N FORK VERMILION R

1430 N, 3500 E, Livingston, IL

Built 1961 Load: 20.7 t ADT: 100

FAS 566

Fair

Over: LOCAL DRAINAGE

CENTER OF ELKHART, Logan, IL

Built 1900 Load: 20.7 t ADT: 1,200

0083

Fair

Over: LOCAL DRAINAGE

4 MI N BEASON, Logan, IL

Built 1900 Load: 20.7 t ADT: 20

TR 150(GREENSWITCH

Fair

Over: Spring Creek

2 MI NE FORSYTH, Macon, IL

Built 1974 Load: 20.7 t ADT: 550

TR 45 Kirby Rd

Fair

Over: STREAM

4 MI S OF ARGENTA, Macon, IL

Built 1962 Load: 20.7 t ADT: 550

TR 474A

Fair

Over: SHAWS PT BR

5.5 E CARLINVILLE, Macoupin, IL

Built 1900 Load: 20.7 t ADT: 75

TR 350

Fair

Over: TROUBLESOME CREEK

NE-10-T5NR2W, McDonough, IL

Built 1963 Load: 20.7 t ADT: 100

OAK GROVE ROAD

Fair

Over: STREAM

0.5 MI SW LAWRENCE R, McHenry, IL

Built 1953 Load: 20.7 t ADT: 575

TR 54

Fair

Over: BRANCH-SUGAR CR

2 MILE SE STANFORD, McLean, IL

Built 1920 Load: 20.7 t ADT: 100

HONEY BEND RD

Fair

Over: 3 MI BRANCH

.3 MI W HONEYBEND, Montgomery, IL

Built 1932 Load: 20.7 t ADT: 75

TR 0257

Fair

Over: STREAM

2.7 MI SE IRVING, Montgomery, IL

Built 1936 Load: 20.7 t ADT: 75

UNNAMED RDAD (TR)D

Fair

Over: BR OF ELKHORN CREEK

0.2 MI NE EAGLE PT., Ogle, IL

Built 1964 Load: 20.7 t ADT: 50

TR-18

Fair

Over: EAST FORK WETWEATHER

0.75 MI W WAKEFIELD, Richland, IL

Built 1909 Load: 20.7 t ADT: 50

TR 192B

Fair

Over: STREAM

1.5 MI NW WESTERVELT, Shelby, IL

Built 1956 Load: 20.7 t ADT: 25

FAS 642(CH 19)

Fair

Over: ROBINSON CREEK

3.4 MI W FINDLAY, Shelby, IL

Built 1955 Load: 20.7 t ADT: 950

N FLANSBERG ROAD

Fair

Over: WADDAMS CREEK

4.5 MI NE OF LENA, Stephenson, IL

Built 1962 Load: 20.7 t ADT: 150

N SHADY VIEW ROAD

Fair

Over: BRUSH CREEK

0.5 MI E OF ILL 26, Stephenson, IL

Built 1936 Load: 20.7 t ADT: 25

CH 5

Fair

Over: CACHE RIVER

.8M.W.SARATOGA CL, Union, IL

Built 1951 Load: 20.7 t ADT: 225

FAS-795

Fair

Over: BRUSH CREEK

2.3 MI E ORCHARDVILL, Wayne, IL

Built 1959 Load: 20.7 t ADT: 900

Showing 4,651-4,700 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.