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

I-55 (NB)

Fair

Over: MACOUPIN CREEK

.3M S FARMRSVLE INT., Montgomery, IL

Built 1972 Load: 49.9 t ADT: 14,400

I-55 (SB)

Fair

Over: MACOUPIN CREEK

.3M S FARMRSVLE INT., Montgomery, IL

Built 1973 Load: 49.9 t ADT: 14,400

I-55

Fair

Over: THREE MILE BRANCH

2M S IL 108, Montgomery, IL

Built 1973 Load: 49.9 t ADT: 26,500

I-72 / US 36

Fair

Over: CLEAR CREEK TRIB

2.6M E BUFFALO INTCH, Sangamon, IL

Built 1975 Load: 49.9 t ADT: 14,300

W. WINTERS STREET

Fair

Over: ASH CREEK

700' WEST OF WARD DRIVE, St. Clair, IL

Built 1980 Load: 49.9 t ADT: 8,500

CH 3

Fair

Over: STREAM

IN ALVIN, Vermilion, IL

Built 1935 Load: 49.9 t ADT: 950

US 30

Fair

Over: SUNFISH SLOUGH

0.7 MI. W. OF IL 84, Whiteside, IL

Built 1999 Load: 49.9 t ADT: 9,650

US 52

Fair

Over: FORKED CREEK

3.2 M S HOFF RD, Will, IL

Built 1922 Load: 49.9 t ADT: 4,150

6TH ST

Fair

Over: KEITH CREEK

0.5 MI S OF E STATE, Winnebago, IL

Built 1984 Load: 49.9 t ADT: 3,900

I-57

Fair

Over: STREAM

3/4 MI N OF ILL-16, Coles, IL

Built 1966 Load: 50.2 t ADT: 21,000

ORCHARD GATEWAY BL

Fair

Over: E RUN BLACKBERRY CRE

0.29 MI E ORCHARD RD, Kane, IL

Built 2006 Load: 50.2 t ADT: 6,100

ILL 47/FAP 326

Fair

Over: VERMILION RIVER

.38 M S OF US 24, Livingston, IL

Built 1993 Load: 50.2 t ADT: 2,650

TR 239

Fair

Over: N FORK LAKE FORK CK

1.5 MI S NARITA, Logan, IL

Built 1971 Load: 50.2 t ADT: 100

TR 44

Fair

Over: SUGAR CREEK OVERFLOW

3 MI SE New Holland, Logan, IL

Built 1984 Load: 50.2 t ADT: 50

FAU-7352 (CH-20)

Fair

Over: STREAM

1.5 MI W FORSYTH, Macon, IL

Built 2010 Load: 50.2 t ADT: 1,250

IL 111

Fair

Over: BEAR CREEK

1.2M S JCT IL 108, Macoupin, IL

Built 1929 Load: 50.2 t ADT: 1,000

SAND PRAIRIE ROAD

Fair

Over: CANTEEN CREEK

1.32 M S ILL 111, Madison, IL

Built 1955 Load: 50.2 t ADT: 1,700

IL 23

Fair

Over: COON CREEK

0.6 M S I-90 TOLL, McHenry, IL

Built 2011 Load: 50.2 t ADT: 3,250

FAU 6578-AIRPORT R

Fair

Over: KICK TRIB, Abandoned UPR

SW EDGE PEORIA CL, Peoria, IL

Built 2010 Load: 50.2 t ADT: 9,950

ILL 106

Fair

Over: BAY CREEK

1.4 MI E PITTSFIELD, Pike, IL

Built 1948 Load: 50.2 t ADT: 1,950

IL 96 / 106

Fair

Over: MCCRANEY CREEK

1M E IL96/106 SPLIT, Pike, IL

Built 1975 Load: 50.2 t ADT: 2,100

US 54

Fair

Over: THE SNY

1M SW IL 96, Pike, IL

Built 1975 Load: 50.2 t ADT: 2,500

FAI 255 NB

Fair

Over: HARDING DITCH north

1.9MI N FAI 64, St. Clair, IL

Built 1985 Load: 50.2 t ADT: 21,750

FAP-877 (ILL-141)

Fair

Over: BEAR CREEK

.9 MI E US-45 JCT, White, IL

Built 1957 Load: 50.2 t ADT: 3,250

I-88 EB

Fair

Over: ELKHORN CREEK

5.10 MI W IL 40, Whiteside, IL

Built 1972 Load: 50.2 t ADT: 6,300

I-88 WB

Fair

Over: ELKHORN CREEK

5.10 MI W IL 40, Whiteside, IL

Built 1972 Load: 50.2 t ADT: 6,300

TR 10A

Fair

Over: SOUTH DITCH

N OF MINERAL, Bureau, IL

Built 1963 Load: 50.5 t ADT: 10

IL 40 FAP 646

Fair

Over: COAL CREEK

1.2 MI S OF BUDA, Bureau, IL

Built 1986 Load: 50.5 t ADT: 1,100

FAS 1658(CH26)

Fair

Over: MOUNTS BRANCH

1 MI SW MORIAH, Clark, IL

Built 1964 Load: 50.5 t ADT: 375

IL 53E FRONTAGE RD

Fair

Over: SALT CREEK

NORTH OF IL-62, Cook, IL

Built 1962 Load: 50.5 t ADT: 2,500

ST CHARLES RD

Fair

Over: ADDISON CREEK

0.7 M E US 45, Cook, IL

Built 2002 Load: 50.5 t ADT: 10,400

FAP-116 (ILL-130)

Fair

Over: NORFOLK SOUTHERN RR

SCL ALBION, Edwards, IL

Built 1934 Load: 50.5 t ADT: 4,200

FAP-328 (US-45)

Fair

Over: WEST SALT CREEK

2 MI S ILL-37 JCT, Effingham, IL

Built 1989 Load: 50.5 t ADT: 3,900

IL 47 FAP 326

Fair

Over: JOHNNY RUN

S EDGE OF MAZON, Grundy, IL

Built 2009 Load: 50.5 t ADT: 4,550

FAI 80 EB

Fair

Over: GENESEO CREEK

0.1 MI W JCT ILL 82, Henry, IL

Built 1961 Load: 50.5 t ADT: 10,300

FAI 80 WB

Fair

Over: GENESEO CREEK

0.1 MI W JCT ILL 82, Henry, IL

Built 1961 Load: 50.5 t ADT: 10,300

IL 47 & US-30

Fair

Over: ROB ROY CREEK

2.9 M S OF IL 56, Kane, IL

Built 1989 Load: 50.5 t ADT: 20,200

ILL 1 & 17

Fair

Over: KKK RIVER S BR.

MOMENCE, Kankakee, IL

Built 1938 Load: 50.5 t ADT: 9,750

IL 1

Fair

Over: DITCH

08 MI S. OF IL 17, Kankakee, IL

Built 1995 Load: 50.5 t ADT: 4,450

IL 48 (FAS 1536)

Fair

Over: FRIENDS CREEK

.5 MI NE ARGENTA, Macon, IL

Built 2009 Load: 50.5 t ADT: 1,150

ILL 251

Fair

Over: SANDY CREEK

2.47 MI S OF ILL 18, Marshall, IL

Built 2009 Load: 50.5 t ADT: 700

IL 173

Fair

Over: NIPPERSINK CR.

2M W of IL47, McHenry, IL

Built 2011 Load: 50.5 t ADT: 3,200

I-74/WB

Fair

Over: Norfolk Southern Railway

12.3 MI E OF ILL 117, McLean, IL

Built 1964 Load: 50.5 t ADT: 14,800

I-74/EB

Fair

Over: Norfolk Southern Railway

12.3 MI E OF ILL 117, McLean, IL

Built 1964 Load: 50.5 t ADT: 14,800

ILL 54

Fair

Over: STREAM

4.25 M N OF US 136, McLean, IL

Built 1934 Load: 50.5 t ADT: 900

IL 9 & US 150

Fair

Over: Union Pacific Railroad

1 MI E I55/74, McLean, IL

Built 1996 Load: 50.5 t ADT: 6,100

MS-6743 (BELT AVE)

Fair

Over: SUGAR CREEK

1.3 MI NW 55 & 9, McLean, IL

Built 1950 Load: 50.5 t ADT: 225

US 67 SB

Fair

Over: MAUVAISE TERRE

2.5M E CHAPIN, Morgan, IL

Built 2005 Load: 50.5 t ADT: 6,450

ILL 64

Fair

Over: KILBUCK CREEK

.3 MI E OF I-39, Ogle, IL

Built 1936 Load: 50.5 t ADT: 4,300

ILL 96

Fair

Over: KCS RR

1MI SE PLEASANT HILL, Pike, IL

Built 1940 Load: 50.5 t ADT: 725

Showing 13,301-13,350 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.