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 84

Good

Over: STREAM

NW-6-T12NR2E, Knox, IL

Built 1985 Load: 26.9 t ADT: 75

TR 58

Good

Over: MIDDLE FORK SUGAR CR

2.5 MILE NE STANFORD, McLean, IL

Built 1972 Load: 26.9 t ADT: 50

TR 94

Good

Over: B MIDDLE FK SUGAR CR

4.0 MI NW SHIRLEY, McLean, IL

Built 1965 Load: 26.9 t ADT: 50

FAS 471

Good

Over: KINGS MILL CREEK

1.0 MI W YUTON, McLean, IL

Built 1970 Load: 26.9 t ADT: 2,300

TR 200 3.5W

Good

Over: SUGAR CREEK

1.5 NE OF AUBURN, Sangamon, IL

Built 1961 Load: 26.9 t ADT: 600

TR 249 A

Good

Over: STREAM

1.0 MI SW SIDNEY, Champaign, IL

Built 1975 Load: 27.2 t ADT: 375

TR 95

Good

Over: SANGAMON RIVER

3.0 MI NE OF MAHOMET, Champaign, IL

Built 1972 Load: 27.2 t ADT: 375

CH 22(FAS 690)

Good

Over: MILL CREEK

1 MI SE LINCOLN TR P, Clark, IL

Built 1961 Load: 27.2 t ADT: 350

ILL 127

Good

Over: FLAT BRANCH CREEK

8.1MI N OF CARLYLE, Clinton, IL

Built 1980 Load: 27.2 t ADT: 3,150

S SIXTH(FAU 7699)

Good

Over: KICKAPOO DRAIN DITCH

MATTOON, Coles, IL

Built 1959 Load: 27.2 t ADT: 3,600

TR 206(FIRST ST)

Good

Over: DRAINAGE DITCH

MURDOCK, Douglas, IL

Built 1952 Load: 27.2 t ADT: 10

CH 11(FAS 683)

Good

Over: CATFISH CREEK

1 MI N OF REDMON, Edgar, IL

Built 1962 Load: 27.2 t ADT: 375

TR-14A

Good

Over: FULFER CREEK

4 MI S ALTAMONT, Effingham, IL

Built 1982 Load: 27.2 t ADT: 150

FAS1881-VALIER PAT

Good

Over: ANDY CREEK

FAS 1881 OV ANDY CR, Franklin, IL

Built 1956 Load: 27.2 t ADT: 1,400

FAS 1362A/CH 9

Good

Over: S FORK VERMILION R

3.5 MI N FAIRBURY, Livingston, IL

Built 1976 Load: 27.2 t ADT: 150

TR 102A

Good

Over: ROOKS CREEK

915 N, 1300 E, Livingston, IL

Built 1965 Load: 27.2 t ADT: 75

TR 136

Good

Over: SAND CREEK

4 MI SW MT ZION, Macon, IL

Built 1999 Load: 27.2 t ADT: 75

TR 566

Good

Over: HENLINE DITCH

5.5 MI WSW CROPSEY, McLean, IL

Built 1967 Load: 27.2 t ADT: 75

TR 328

Good

Over: KICKAPOO CREEK

W EDGE DOWNS, McLean, IL

Built 1963 Load: 27.2 t ADT: 750

TR 356

Good

Over: KICKAPOO CREEK

3.0 MI NNE DOWNS, McLean, IL

Built 1972 Load: 27.2 t ADT: 25

TR 13

Good

Over: SPOON RIVER

SE-9-T14NR6E, Stark, IL

Built 1900 Load: 27.2 t ADT: 25

ROCK CITY RD

Good

Over: BROWN CREEK

4 MI SW DAVIS, Stephenson, IL

Built 1962 Load: 27.2 t ADT: 900

TR 239

Good

Over: STREAM

1.0 MI SE HOMER, Champaign, IL

Built 1974 Load: 27.5 t ADT: 100

I355 NB

Good

Over: LONG RUN CREEK

.4M N OF 135TH, Cook, IL

Built 2007 Load: 27.5 t ADT: 41,150

ELDORADO ST

Good

Over: UP RR

0.2 M S OF TOWER RD, Cook, IL

Built 1940 Load: 27.5 t ADT: 400

WATERMAN ROAD

Good

Over: BR OF SOMONAUK CREEK

700N 900E, DeKalb, IL

Built 1968 Load: 27.5 t ADT: 300

FAS-720 (CH-10)

Good

Over: HURRICANE CREEK

3 MI SW PITTSBURG, Fayette, IL

Built 1973 Load: 27.5 t ADT: 150

CH 9 KEMPTON RD

Good

Over: STREAM

1410E,3700N, Ford, IL

Built 1959 Load: 27.5 t ADT: 150

FAS 873

Good

Over: ICGRR

W AKIN, Franklin, IL

Built 1943 Load: 27.5 t ADT: 850

TR 309

Good

Over: TRIB TO MUD CR

2 7I. SE MILFORD, Iroquois, IL

Built 1960 Load: 27.5 t ADT: 75

THATCHER ROAD

Good

Over: VIRGIL DITCH NO. 1

0.1 MI S. BEITH RD, Kane, IL

Built 2014 Load: 27.5 t ADT: 375

DEERPATH AVE

Good

Over: SKOKIE RIVER

0.45 MI E OF US 41, Lake, IL

Built 1927 Load: 27.5 t ADT: 15,000

TR 69

Good

Over: GOOSEBERRY CREEK

3255 E, 2500 N, Livingston, IL

Built 1970 Load: 27.5 t ADT: 50

IL 48/127

Good

Over: WEST FORK SHOAL CR.

RAYMOND W CITY LIMIT, Montgomery, IL

Built 1930 Load: 27.5 t ADT: 5,350

FAS-209 (CH-11)

Good

Over: Copperas Creek

3.1 M S OF ILL RT 92, Rock Island, IL

Built 1982 Load: 27.5 t ADT: 1,600

BAILEYVILLE ROAD

Good

Over: CRANE CREEK BRANCH

4 MI. SOUTH FREEPORT, Stephenson, IL

Built 1937 Load: 27.5 t ADT: 1,500

COUNTY LINE ROAD

Good

Over: COUNTY DITCH

3 MI SE DEER GROVE, Whiteside, IL

Built 1966 Load: 27.5 t ADT: 75

TR 42/RANZ ROAD

Good

Over: SUGAR CREEK BRANCH

.6 MI NW AVISTON, Clinton, IL

Built 1901 Load: 27.9 t ADT: 10

TR 354

Good

Over: STREAM

MURDOCK, Douglas, IL

Built 1958 Load: 27.9 t ADT: 50

FAS 566

Good

Over: LAKE FORK CREEK TRIB

1 M E ELKHART, Logan, IL

Built 2010 Load: 27.9 t ADT: 700

FAU6384/ALEXANDER

Good

Over: GOOSE CREEK

2.5 MI SE 150 & 55, McLean, IL

Built 1981 Load: 27.9 t ADT: 2,950

TR 542

Good

Over: BR SALT CREEK

5.5 MI SW BELLFLOWER, McLean, IL

Built 1965 Load: 27.9 t ADT: 50

TR 133

Good

Over: WILLOW BRANCH

3.0 MI NW OF MILMINE, Piatt, IL

Built 1974 Load: 27.9 t ADT: 200

FAS 853

Good

Over: LITTLE MARYS RIVER

3.5MI S OF SPARTA, Randolph, IL

Built 1988 Load: 27.9 t ADT: 1,300

FAS-802

Good

Over: FOX RIVER

0.5 MI NE GALLAGAR, Richland, IL

Built 1963 Load: 27.9 t ADT: 250

CH 7

Good

Over: CACHE RIVER

1M.N.MT.PLEASANT, Union, IL

Built 1960 Load: 27.9 t ADT: 225

FAS 0923

Good

Over: CANY CREEK

.8 M W ILL 127, Union, IL

Built 1965 Load: 27.9 t ADT: 400

I- 55 NB

Good

Over: MINK CREEK

0.8 M N OF US 30, Will, IL

Built 1995 Load: 27.9 t ADT: 40,900

I- 55 SB

Good

Over: MINK CREEK

0.8 M N OF US 30, Will, IL

Built 1995 Load: 27.9 t ADT: 40,900

FAS 904

Good

Over: CREEK

2.3 MI SO PITTSBURG, Williamson, IL

Built 1972 Load: 27.9 t ADT: 2,950

Showing 14,801-14,850 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.