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 65

Good

Over: STREAM

2 MI N OFOAKLEY, Macon, IL

Built 1998 Load: 32.4 t ADT: 150

TR 75

Good

Over: WILLOW BRANCH

3.1 MI NE NIANTIC, Macon, IL

Built 1995 Load: 32.4 t ADT: 25

TR 2

Good

Over: BR OF LONG PT SLOUGH

2.5 MI W OF NIANTIC, Macon, IL

Built 1994 Load: 32.4 t ADT: 50

TR 271 Crosson Rd

Good

Over: DRAINAGE DITCH

3 MI SSW DALTON CITY, Macon, IL

Built 1995 Load: 32.4 t ADT: 50

TR 20 A

Good

Over: LAKE FORK DRAIN DIT

4.4 MI W WARRENSBURG, Macon, IL

Built 1994 Load: 32.4 t ADT: 35

TR 263(RIDLEN RD)

Good

Over: DRY BRANCH CREEK

.75 MI SE OF MACON, Macon, IL

Built 1996 Load: 32.4 t ADT: 350

TR 11 B

Good

Over: KICKAPOO CREEK

1 MI N OF ARGENTA, Macon, IL

Built 1998 Load: 32.4 t ADT: 50

TR 11 B

Good

Over: TRIB TO FRIENDS CR

3.7 MI WNW ARGENTA, Macon, IL

Built 2000 Load: 32.4 t ADT: 25

TR 46

Good

Over: DRAINAGE DITCH

2.4 MI N WARRENSBURG, Macon, IL

Built 1999 Load: 32.4 t ADT: 50

TR 1(HILVETY RD)

Good

Over: LONG GROVE CREEK

3.1 MILE S MACON, Macon, IL

Built 2005 Load: 32.4 t ADT: 100

FAS 549A(CH20)

Good

Over: SPRING CREEK

1.5 MI E OF FORSYTH, Macon, IL

Built 2004 Load: 32.4 t ADT: 2,300

TR 268(OAKLEY RD)

Good

Over: LONG CREEK

3.8 MI NE OF CASNER, Macon, IL

Built 2004 Load: 32.4 t ADT: 75

FAS 1544 (CH 24)

Good

Over: STREAM

1.7 MI NE OF OAKLEY, Macon, IL

Built 2010 Load: 32.4 t ADT: 1,350

CH 19 (FAS 555)

Good

Over: WILLOW BRANCH

1.9 MI N NIANTIC, Macon, IL

Built 2007 Load: 32.4 t ADT: 300

TR 34

Good

Over: SOUTH FORK CREEK

3.5 MI.NW WARRENSBUR, Macon, IL

Built 2005 Load: 32.4 t ADT: 50

TR 27A

Good

Over: DITCH

2.2 MI NW WARRENSBUR, Macon, IL

Built 2006 Load: 32.4 t ADT: 50

FAS 548

Good

Over: FRIENDS CREEK

4.2 MI NE ARGENTA, Macon, IL

Built 2005 Load: 32.4 t ADT: 225

TR 226

Good

Over: LONG CREEK

NE MT ZION, Macon, IL

Built 2006 Load: 32.4 t ADT: 950

TR 255

Good

Over: MOSQUITO CREEK

1.9 MI N BLUE MOUND, Macon, IL

Built 2006 Load: 32.4 t ADT: 50

FAS 548

Good

Over: LAKE FORK CREEK

1.1 MI W MAROA, Macon, IL

Built 2010 Load: 32.4 t ADT: 375

TR 34 (LINCOLN MEM

Good

Over: DRAINAGE DITCH

2.8 MI NW WARRENSBUR, Macon, IL

Built 2007 Load: 32.4 t ADT: 50

FAS 544A (CH 25)

Good

Over: STREAM

2.7 MI N OAKLEY, Macon, IL

Built 2007 Load: 32.4 t ADT: 1,050

TR 56 (GLASGOW RD)

Good

Over: DRAIN DITCH

1.5 MI N WARRENSBURG, Macon, IL

Built 2012 Load: 32.4 t ADT: 100

TR 23 (NEWBURG RD)

Good

Over: FRIENDS CREEK

1.0 MI E ARGENTA, Macon, IL

Built 2008 Load: 32.4 t ADT: 25

TR 42BNEVADA RD

Good

Over: SPRING CREEK

1 MI NW BOODY, Macon, IL

Built 2011 Load: 32.4 t ADT: 75

MUNI 0900(HARRYLAN

Good

Over: STREAM

W EDGE MT ZION, Macon, IL

Built 2009 Load: 32.4 t ADT: 2,250

TR 52B

Good

Over: DRAINAGE DITCH

0.75 N BOODY, Macon, IL

Built 2009 Load: 32.4 t ADT: 75

TR 256 FORT DANIEL

Good

Over: BIG CREEK

2.7 MI NE MT ZION, Macon, IL

Built 2008 Load: 32.4 t ADT: 450

TR 153

Good

Over: Trib Sangamon River

3.2 MI SE NIANTIC, Macon, IL

Built 2008 Load: 32.4 t ADT: 25

FAS 554 (CH 32)

Good

Over: Trib Mosquito Creek

1.3 MI NE BLUE MOUND, Macon, IL

Built 2009 Load: 32.4 t ADT: 525

TR 265(KOSSIECK RD

Good

Over: DRY BRANCH

3.5 MI SW OF MACON, Macon, IL

Built 2015 Load: 32.4 t ADT: 50

CH 29 (BOODY RD)

Good

Over: MOSQUITO CREEK

3 MI NW OF MACON, Macon, IL

Built 2016 Load: 32.4 t ADT: 100

FAS 546/CH 21

Good

Over: SOUTH FORK CREEK

2.8 MI NW WARRENSBUR, Macon, IL

Built 2014 Load: 32.4 t ADT: 400

FAU-7411

Good

Over: Big Creek

S FORT DANIELS AREA, Macon, IL

Built 2017 Load: 32.4 t ADT: 625

FAU 7413

Good

Over: Trib to Big Creek

2 Mi. SE Long Creek, Macon, IL

Built 2020 Load: 32.4 t ADT: 1,950

CANTRELL RD(FAU735

Good

Over: STREAM

IN HARRISTOWN, Macon, IL

Built 1976 Load: 32.4 t ADT: 600

TR 55(CUNDIFF RD)

Good

Over: REYNOLDS RUN

1.5 MI S OF OREANA, Macon, IL

Built 1985 Load: 32.4 t ADT: 550

TR 42

Good

Over: STREAM

4 MI NE BLUE MOUND, Macon, IL

Built 1994 Load: 32.4 t ADT: 75

FAS 1538/WYCKLES R

Good

Over: STREAM

3.5 Mi. SE Warr, Macon, IL

Built 2014 Load: 32.4 t ADT: 900

CH 54 (W Wise Road

Good

Over: Drainage Ditch

2.2 Mi. N Warrensbur, Macon, IL

Built 2015 Load: 32.4 t ADT: 75

TR-42

Good

Over: Stream

3.25 M NE Blue Mound, Macon, IL

Built 2017 Load: 32.4 t ADT: 100

FAS 554 CH 32

Good

Over: Trib. Willow Branch

0.25 E. of Macon, Macon, IL

Built 2001 Load: 32.4 t ADT: 1,200

TAYLOR RD(FAU 7426

Good

Over: MORRISON'S CREEK

.23 MI S OF GROVE RD, Macon, IL

Built 1985 Load: 32.4 t ADT: 525

TAYLOR RD(FAU 7426

Good

Over: MORRISON'S CREEK

.18 MI S OF GROVE, Macon, IL

Built 1985 Load: 32.4 t ADT: 525

TAYLOR RD(FAU 7426

Good

Over: MORRISON'S CREEK

.1 MI S OF GROVE RD, Macon, IL

Built 1985 Load: 32.4 t ADT: 525

FAU 7432

Good

Over: STEVENS CREEK

.57 MI N OF MOUND RD, Macon, IL

Built 2010 Load: 32.4 t ADT: 4,800

FAU 7398/S SHORE D

Good

Over: SAND CREEK ARM

1.22 MI E OF US 51, Macon, IL

Built 2013 Load: 32.4 t ADT: 2,800

FAP 320 (IL 121)

Good

Over: DITCH

0.2 MI E OF LOGAN CO, Macon, IL

Built 2000 Load: 32.4 t ADT: 3,750

IL 4

Good

Over: SPANISH NEEDLE CR BR

3M N IL 16-GILLESPIE, Macoupin, IL

Built 1987 Load: 32.4 t ADT: 2,050

OLD IL 4

Good

Over: HURRICANE CREEK

3.3M N IL108-CARLNVL, Macoupin, IL

Built 2007 Load: 32.4 t ADT: 100

Showing 19,001-19,050 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.