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 69 C

Good

Over: UPPER SALT FORK DIT

1.5 MI SE RANTOUL, Champaign, IL

Built 1980 Load: 23.3 t ADT: 50

TR 110 A

Good

Over: SHILOH DRAIN DITCH 3

1.1 MI N OF GARLAND, Edgar, IL

Built 1970 Load: 23.3 t ADT: 50

TR 382A

Good

Over: MUD CREEK

3.0 MI SW ANNAWAN, Henry, IL

Built 1972 Load: 23.3 t ADT: 50

FAS 321 CH 4

Good

Over: IROQUOIS RIVER

3 MI E OF ILL 45, Iroquois, IL

Built 1975 Load: 23.3 t ADT: 425

PARK ACCESS ROAD

Good

Over: LK MURPHY SPILLWAY

LK MURPHYSBORO ST PK, Jackson, IL

Built 1958 Load: 23.3 t ADT: 75

FAS-704

Good

Over: EAST CROOKED CREEK

5 MI E ROSE HILL, Jasper, IL

Built 1965 Load: 23.3 t ADT: 250

TR 29

Good

Over: CREEK

1340 E, 3000 N, Livingston, IL

Built 1965 Load: 23.3 t ADT: 50

TR 121A

Good

Over: TRIB TO FIVE MI CR

3180 E, 1900 N, Livingston, IL

Built 1964 Load: 23.3 t ADT: 25

TR 248A

Good

Over: TRIB S FK VERMILION

640 N, 3000 E, Livingston, IL

Built 1964 Load: 23.3 t ADT: 50

TR 422

Good

Over: RICHARDSON BRANCH

1 M SW STANDARD CTY, Macoupin, IL

Built 2009 Load: 23.3 t ADT: 35

TR 12

Good

Over: STREAM

2 MI SW FOOSLAND, McLean, IL

Built 1976 Load: 23.3 t ADT: 100

TR 349

Good

Over: SANGAMON RV

1.0 MI NW SAYBROOK, McLean, IL

Built 1961 Load: 23.3 t ADT: 75

TR 72

Good

Over: B. MIDDLE FK SUGAR C

3.5 MI E STANFORD, McLean, IL

Built 1969 Load: 23.3 t ADT: 50

TR 155

Good

Over: LITTLE CROOKED CREEK

3.0MI SE PLEASANTHIL, McLean, IL

Built 1963 Load: 23.3 t ADT: 25

SHEPARD ROAD

Good

Over: N BR SUGAR CR

SHEPARD RD W VETERNS, McLean, IL

Built 2007 Load: 23.3 t ADT: 1,700

LINDENWOOD RD

Good

Over: KILBUCK CREEK

9.5 MI NE ROCHELLE, Ogle, IL

Built 1961 Load: 23.3 t ADT: 825

EAGLE CR ROAD

Good

Over: BR ELKHORN CREEK

1 MI SE BROOKVILLE, Ogle, IL

Built 1973 Load: 23.3 t ADT: 10

PULSIFER RD

Good

Over: TIBER CREEK

S.CTR-35-BRIMFIELD, Peoria, IL

Built 1994 Load: 23.3 t ADT: 175

TR 169

Good

Over: STREAM

2 MI SSE CERRO GORDO, Piatt, IL

Built 1971 Load: 23.3 t ADT: 50

TR-62

Good

Over: COPPERAS CREEK

2.5 MI SE EDGINGTON, Rock Island, IL

Built 1965 Load: 23.3 t ADT: 25

TR 249

Good

Over: LITTLE SPRING CREEK

1.0 MI N CURRAN, Sangamon, IL

Built 1900 Load: 23.3 t ADT: 1,050

TR 157 2.5N

Good

Over: WILLOW BRANCH

1.0 S OF ILLIOPOLIS, Sangamon, IL

Built 1966 Load: 23.3 t ADT: 10

TR 30 C

Good

Over: STREAM

3.5 MI NW MAHOMET, Champaign, IL

Built 1976 Load: 23.7 t ADT: 50

PALMER AV

Good

Over: ADDISON CREEK

0.1 MI W WOLF RD, Cook, IL

Built 1961 Load: 23.7 t ADT: 2,250

TR 113

Good

Over: MUDDY CREEK

1.6 MI NW TOLEDO, Cumberland, IL

Built 1951 Load: 23.7 t ADT: 125

FAS 522(CH 6)

Good

Over: HACKETT BRANCH

0.9 MI E OF HAYES, Douglas, IL

Built 1969 Load: 23.7 t ADT: 1,150

TR 119

Good

Over: ARCOLA #1 DITCH

0.5 MI E OF GALTON, Douglas, IL

Built 1970 Load: 23.7 t ADT: 100

TR 138 B

Good

Over: STREAM

5.5 MI N OF METCALF, Edgar, IL

Built 1972 Load: 23.7 t ADT: 75

FAP-752 (US-40)

Good

Over: STREAM

E BLUFF CITY, Fayette, IL

Built 1956 Load: 23.7 t ADT: 3,500

FAS 893

Good

Over: N FORK SALINE RIVER

1.75 MI W ILL 1, Gallatin, IL

Built 1955 Load: 23.7 t ADT: 800

TR 319

Good

Over: BRANCH OF WALKER CRT

1.0 MI W. OF KEWANEE, Henry, IL

Built 1974 Load: 23.7 t ADT: 100

FAS 316 (CH 23)

Good

Over: LANGAN CR

2 MI N IL 116, Iroquois, IL

Built 1975 Load: 23.7 t ADT: 350

TR 592

Good

Over: HENLINE DITCH

3.5 MI SW CROPSEY, McLean, IL

Built 1961 Load: 23.7 t ADT: 200

TR 101

Good

Over: BR SIX MILE CREEK

1.0 MI NW HUDSON, McLean, IL

Built 1969 Load: 23.7 t ADT: 50

TR 83

Good

Over: BR MACKINAW RIVER

2.0 M SSE CLARKSVILL, McLean, IL

Built 1965 Load: 23.7 t ADT: 150

SKARE RD

Good

Over: BR. STILLMAN CR.

6.5 N.W. FLAGG CENTE, Ogle, IL

Built 1971 Load: 23.7 t ADT: 25

TR 1

Good

Over: DRAINAGE DITCH

5.5 MI NW MANSFIELD, Piatt, IL

Built 1969 Load: 23.7 t ADT: 75

FAS 1373-CH 5

Good

Over: SPOON RIVER-E BRANCH

SE-36-T14NR6E, Stark, IL

Built 1955 Load: 23.7 t ADT: 150

BASSWOOD ROAD

Good

Over: BR OF PECATONICA RIV

SOUTH OF FAS RT.66, Stephenson, IL

Built 1964 Load: 23.7 t ADT: 75

E VICTORY ST(MS290

Good

Over: STREAM

SIDNEY, Champaign, IL

Built 1968 Load: 24.0 t ADT: 200

CH 18 (FAS 1490)

Good

Over: SALT CREEK

1 MI S WELDON SPRING, De Witt, IL

Built 1964 Load: 24.0 t ADT: 375

TR 105

Good

Over: BRUSHY FORK

1.0 MI SW OF NEWMAN, Douglas, IL

Built 1963 Load: 24.0 t ADT: 25

FAS 681(CH 13)

Good

Over: S BRANCH BROUILLETTS

3 MI W HORACE S.25MI, Edgar, IL

Built 1965 Load: 24.0 t ADT: 50

FAS-713

Good

Over: BECKS CREEK

3 MI S HERRICK, Fayette, IL

Built 1950 Load: 24.0 t ADT: 525

TR 4 SULLIVANT

Good

Over: HENLINE CREEK

1320N 00E, Ford, IL

Built 1971 Load: 24.0 t ADT: 50

CH 47

Good

Over: SPRING CREEK

.35 MI E OF US 45, Iroquois, IL

Built 1990 Load: 24.0 t ADT: 375

SIXTH ST

Good

Over: CREEK

6TH ST-ELKVILLE, Jackson, IL

Built 1964 Load: 24.0 t ADT: 225

TR 46

Good

Over: BRANCH-SUGAR CR

1 MILE SE STANFORD, McLean, IL

Built 1970 Load: 24.0 t ADT: 75

TR 52

Good

Over: 1.5 MI N MCLEAN

MOUNT HOPE SEC 23-24, McLean, IL

Built 1959 Load: 24.0 t ADT: 150

FAS 1216-CH 3

Good

Over: POPE CREEK

NW-31-T14NR2W, Mercer, IL

Built 1962 Load: 24.0 t ADT: 25

Showing 14,401-14,450 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.