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 A

Good

Over: MIDDLE FORK SUGAR CR

2 MILE SSW STANFORD, McLean, IL

Built 1965 Load: 24.9 t ADT: 50

TR 255B

Good

Over: BRANCH OF MACKINAW R

4.5 MI SSE ANCHOR, McLean, IL

Built 1973 Load: 24.9 t ADT: 50

TR 547

Good

Over: BRANCH OF LONE TREE

1.0MI SE BELLFLOWER, McLean, IL

Built 1972 Load: 24.9 t ADT: 50

TR 602A

Good

Over: BRANCH OF LONE TREE

1.0 MI NE BELLFLOWER, McLean, IL

Built 1972 Load: 24.9 t ADT: 75

TR 203

Good

Over: LITTLE CROOKED CREEK

E EDGE COOKSVILLE, McLean, IL

Built 1971 Load: 24.9 t ADT: 75

TR 462

Good

Over: SALT CREEK

1.2 MI NE LEROY, McLean, IL

Built 1973 Load: 24.9 t ADT: 150

TR 105

Good

Over: HENLINE DITCH

3.0 MI N COLFAX, McLean, IL

Built 1972 Load: 24.9 t ADT: 25

TR 190

Good

Over: SHORT POINT CREEK

1.5 MI SW HEYWORTH, McLean, IL

Built 1967 Load: 24.9 t ADT: 75

COLUMBINE ROAD

Good

Over: BR LEAF RIVER

2.8 M NE FORRESTON, Ogle, IL

Built 1976 Load: 24.9 t ADT: 100

TR-104

Good

Over: MILL CREEK

2 MI SE OAK GROVE, Rock Island, IL

Built 1971 Load: 24.9 t ADT: 250

CH 14

Good

Over: STREAM

SE COR-8-T14NR6E, Stark, IL

Built 1954 Load: 24.9 t ADT: 100

CH 7

Good

Over: BRADSHAW CREEK

1.4M.N. MT.PLEASANT, Union, IL

Built 1960 Load: 24.9 t ADT: 225

TR 27

Good

Over: Middle Branch

5 mi sw Cheneyville, Vermilion, IL

Built 2012 Load: 24.9 t ADT: 50

TR 24

Good

Over: ELLISON CR

S1/2-20-T9NR3W, Warren, IL

Built 1900 Load: 24.9 t ADT: 25

TR 252

Good

Over: E BR PANTHER CR

2.5 MI SE PANOLA, Woodford, IL

Built 1967 Load: 24.9 t ADT: 75

US 150(FAS 1512)

Good

Over: Salt Fork River

1 MI W ST JOSEPH, Champaign, IL

Built 1939 Load: 25.3 t ADT: 5,550

TR 1

Good

Over: HAYES BRANCH

1.7 MI NW OF HAYES, Douglas, IL

Built 1968 Load: 25.3 t ADT: 150

CH 9

Good

Over: SCATTERING FORK

4.2 MI SE OF TUSCOLA, Douglas, IL

Built 1957 Load: 25.3 t ADT: 250

CH 18 HAM-CH 34 FR

Good

Over: MIDDLE FK BIG MUD.RV

MACEDONIA RD, Franklin, IL

Built 1974 Load: 25.3 t ADT: 125

TR 31

Good

Over: TRIB TO HICKS BRANCH

0.25M E OF ILL 34, Hardin, IL

Built 1940 Load: 25.3 t ADT: 100

S APPLE CANYONRO

Good

Over: HELLS BRANCH

8MI SW APPLE RIVER, Jo Daviess, IL

Built 1971 Load: 25.3 t ADT: 550

TR 194

Good

Over: LITTLERS CREEK

NE-30-T9NR3E, Knox, IL

Built 1900 Load: 25.3 t ADT: 50

TR-48

Good

Over: BAILEY CREEK

E 3RD N 1840, LaSalle, IL

Built 1968 Load: 25.3 t ADT: 150

FAS 1439 - CH 8

Good

Over: TROUBLESOME CREEK

NE-31-T5NR3W, McDonough, IL

Built 1931 Load: 25.3 t ADT: 650

US 51 SB

Good

Over: SUGAR CREEK

0.27 MI S HOVEY AVE, McLean, IL

Built 1978 Load: 25.3 t ADT: 9,700

TR 137

Good

Over: LITTLE CROOKED CREEK

1.5 MI S PLEASANTHIL, McLean, IL

Built 1971 Load: 25.3 t ADT: 50

TR 135

Good

Over: CROOKED CREEK

3.5 MI S LEXINGTON, McLean, IL

Built 1972 Load: 25.3 t ADT: 25

TR 440

Good

Over: LITTLE CROOKED CR

2.1MI S PLEASANTHILL, McLean, IL

Built 1973 Load: 25.3 t ADT: 50

TR 343A

Good

Over: KICKAPOO CREEK

2.0 MI N DOWNS, McLean, IL

Built 1965 Load: 25.3 t ADT: 375

TR 489

Good

Over: LITTLE KICKAPOO CR

3.5 N HEYWORTH, McLean, IL

Built 1966 Load: 25.3 t ADT: 50

TR 352

Good

Over: MONEY CREEK

2.2 MI SE TOWANDA, McLean, IL

Built 1965 Load: 25.3 t ADT: 75

CARON RD

Good

Over: BRANCH OF KYTE CREEK

CARON RD ROCHELLE, Ogle, IL

Built 1977 Load: 25.3 t ADT: 2,100

CH 10

Good

Over: STREAM

2.5 MI N OF I-74, Piatt, IL

Built 1900 Load: 25.3 t ADT: 150

TR 77

Good

Over: WALNUT CREEK

3 MI WNW WINCHESTER, Scott, IL

Built 1964 Load: 25.3 t ADT: 75

NO DATA ENTERED

Good

Over: LITTLE KINCAID LWC

NO DATA ENTERED, Jackson, IL

Built 2003 Load: 25.4 t ADT: 50

FAI 70 EB

Good

Over: BEAVER CREEK

0.2 MI W ILL 127, Bond, IL

Built 1966 Load: 25.6 t ADT: 12,050

FAI 70 WB

Good

Over: BEAVER CREEK

0.2 MI W ILL 127, Bond, IL

Built 1966 Load: 25.6 t ADT: 12,050

TR 94

Good

Over: ELM POINT BR

2.25M SE PANAMA, Bond, IL

Built 1973 Load: 25.6 t ADT: 25

I90 WB (NW TOLL)

Good

Over: DES PLAINES RIV

0.7 M E I294 P9, Cook, IL

Built 1958 Load: 25.6 t ADT: 45,750

FAS-1694

Good

Over: HUTSON CREEK

HUTSONVILLE, Crawford, IL

Built 1936 Load: 25.6 t ADT: 400

TR 159

Good

Over: FREINDS CREEK DITCH

2 MI NE OF WELDON, De Witt, IL

Built 1977 Load: 25.6 t ADT: 50

TR 59

Good

Over: BRUSHY FORK

0.1 MI S OF TR 51, Douglas, IL

Built 1983 Load: 25.6 t ADT: 50

IL 47

Good

Over: DRUMMER CREEK

4.33MI,N OF IL9, Ford, IL

Built 1993 Load: 25.6 t ADT: 3,050

TR 99

Good

Over: TRIB BIG MUDDY

TR99 OV TR B MUDDY, Franklin, IL

Built 1900 Load: 25.6 t ADT: 25

LIVINGSTON RD TR-1

Good

Over: EAST FK MAZON RIVER

0.10 MI E OF TR-168, Grundy, IL

Built 1974 Load: 25.6 t ADT: 50

TOWNSHIP RD NO 262

Good

Over: PLUM RIVER

4 MI SE STOCKTON, Jo Daviess, IL

Built 1958 Load: 25.6 t ADT: 150

FINLEY ROAD

Good

Over: BLACKBERRY CREEK

2.0 MI N SUGAR GROVE, Kane, IL

Built 1971 Load: 25.6 t ADT: 50

TR 23

Good

Over: PRAIRIE CK

1.5 W 2 MI S EMDEN, Logan, IL

Built 1967 Load: 25.6 t ADT: 50

TR 3

Good

Over: LAKE FORK CREEK

8 MI W OF MAROA, Macon, IL

Built 2012 Load: 25.6 t ADT: 125

FAS 441 - CH 26

Good

Over: CAMP CREEK

W.CTR-31-T4NR3W, McDonough, IL

Built 1958 Load: 25.6 t ADT: 150

Showing 14,651-14,700 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.