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

DELHI RD/FAS 748

Good

Over: LITTLE PIASA CREEK

1.4 MI W OF BRIGHTON, Jersey, IL

Built 1975 Load: 21.4 t ADT: 1,300

GERMAN ROAD

Good

Over: BR OF GREEN RIVER

0.6 M S HERMAN ROAD, Lee, IL

Built 1964 Load: 21.4 t ADT: 50

TR-302

Good

Over: KICKAPOO CREEK

3.5 MI SW DOWNS, McLean, IL

Built 1973 Load: 21.4 t ADT: 50

TR 288

Good

Over: LITTLE CREEK

0.5 MI N IRVING, Montgomery, IL

Built 1969 Load: 21.4 t ADT: 125

EAST LINE RD

Good

Over: BR KILBUCK CR

1.0 MI NE CRESTON, Ogle, IL

Built 1971 Load: 21.4 t ADT: 50

TR 69

Good

Over: STREAM

0.5 MI W AMITY, Richland, IL

Built 2006 Load: 21.4 t ADT: 25

TR 465 18S

Good

Over: CLEAR CREEK

3.5 SE OF PAWNEE, Sangamon, IL

Built 1965 Load: 21.4 t ADT: 25

ILL 161

Good

Over: TRIB TO SILVER CREEK

0.1 MI E ILL 4, St. Clair, IL

Built 1933 Load: 21.4 t ADT: 6,650

TR 128

Good

Over: MUD RUN

NE-33-T12NR7E, Stark, IL

Built 1995 Load: 21.4 t ADT: 10

E. RIDOTT ROAD

Good

Over: WICKHAM CREEK

1.5 MI N OF US RT 20, Stephenson, IL

Built 1959 Load: 21.4 t ADT: 150

CH 14

Good

Over: ELLISON CR

CTR-19-T9NR3W, Warren, IL

Built 1948 Load: 21.4 t ADT: 100

BLACK RD

Good

Over: DRAINAGE DITCH

5 MI SW OF MORRISON, Whiteside, IL

Built 1965 Load: 21.4 t ADT: 725

RUSH ROAD

Good

Over: BR OF ROCK RIVER

3 MI NE OF LYNDON, Whiteside, IL

Built 1974 Load: 21.4 t ADT: 50

TR 212

Good

Over: HUNTER SLOUGH

4 MI E CORNLAND, Logan, IL

Built 1959 Load: 21.5 t ADT: 20

TR 272

Good

Over: FLATVILLE DRAIN DIT

1.5 MI N FLATVILLE, Champaign, IL

Built 1970 Load: 21.7 t ADT: 325

COVINGTON RD/TR 11

Good

Over: SANTA FE DITCH

1 MI SE OFBARTELSO, Clinton, IL

Built 1969 Load: 21.7 t ADT: 700

TR 41

Good

Over: KASKASKIA RIVER

1.15 MI NW FICKLIN, Douglas, IL

Built 1971 Load: 21.7 t ADT: 150

FAS 1707 (US-40)

Good

Over: STREAM

2.5 MI W MONTROSE, Effingham, IL

Built 1958 Load: 21.7 t ADT: 3,950

TR 33

Good

Over: N FORK SALINE R

2.5 MI SW OF OMAHA, Gallatin, IL

Built 1965 Load: 21.7 t ADT: 50

TR 0468

Good

Over: COAL CREEK

2.0 MI NE ANNAWAN, Henry, IL

Built 1974 Load: 21.7 t ADT: 100

S ELIZ.SCALES MD R

Good

Over: APPLE RIVER

.5 MI W ELIZABETH, Jo Daviess, IL

Built 1963 Load: 21.7 t ADT: 900

BERM ACCESS ROAD

Good

Over: LAKE ARGYLE SPLWY

W. CTR-6-T5NR3W, McDonough, IL

Built 1958 Load: 21.7 t ADT: 50

ARMOUR RD

Good

Over: BR STILLMAN CREEK

1.5 MI SE STILLMAN V, Ogle, IL

Built 1971 Load: 21.7 t ADT: 150

PRAIRIE DELL RD

Good

Over: UNNAMED CREEK

7 MI NW FORRESTON, Ogle, IL

Built 1958 Load: 21.7 t ADT: 25

RIVER ROAD

Good

Over: UNNAMED CR

4.8 MI N OF OREGON, Ogle, IL

Built 1958 Load: 21.7 t ADT: 2,000

NORTH SUNNYSIDE RD

Good

Over: BR OF YELLOW CREEK

4.0 MI SW OF LENA, Stephenson, IL

Built 1971 Load: 21.7 t ADT: 50

SMITH ROAD

Good

Over: COOLIDGE CREEK

1 MI E HOISINGTON RD, Winnebago, IL

Built 1970 Load: 21.7 t ADT: 1,050

FAS 945

Good

Over: SEXTON CREEK

7 MI E OF MCCLURE, Alexander, IL

Built 1962 Load: 22.0 t ADT: 650

SOUTH SCHOOL ROAD

Good

Over: BR OF ROCK CREEK

0.5 M SOUTH CHADWICK, Carroll, IL

Built 1957 Load: 22.0 t ADT: 50

TR 166

Good

Over: N FORK BROUILLETTS C

5 MI NNW CHERRY PT, Edgar, IL

Built 1970 Load: 22.0 t ADT: 50

TR 64 ROGERS

Good

Over: STREAM

4080N,1700E, Ford, IL

Built 1969 Load: 22.0 t ADT: 50

CH3-KINKAID STONE

Good

Over: KINKAID CREEK

1.54 MI S CH 20, Jackson, IL

Built 1998 Load: 22.0 t ADT: 300

CH 5 INLET RD

Good

Over: GREEN RIVER

5.0 MI NE AMBOY, Lee, IL

Built 1961 Load: 22.0 t ADT: 400

TR 128

Good

Over: BRANCH SUGAR CREEK

1.0 MILE NW SHIRLEY, McLean, IL

Built 1967 Load: 22.0 t ADT: 75

TR 134

Good

Over: KINGS MILL CREEK

1.2MI NNW TWIN GROVE, McLean, IL

Built 1967 Load: 22.0 t ADT: 75

HAY RD.

Good

Over: BR. CLEAR CREEK

3.5 S.W. DAYSVILLE, Ogle, IL

Built 1959 Load: 22.0 t ADT: 75

HARPER RD

Good

Over: BRANCH LEAF RIVER

4.5 MI NW FORRESTON, Ogle, IL

Built 1974 Load: 22.0 t ADT: 10

TR 110 9 W

Good

Over: SAMPSON CREEK

2.5 NE OF LOAMI, Sangamon, IL

Built 1967 Load: 22.0 t ADT: 175

WEST GREENBUSH ROA

Good

Over: BR OF YELLOW CREEK

2.5 MI SW OF LENA, Stephenson, IL

Built 1962 Load: 22.0 t ADT: 75

S FARWELL BRIDGE R

Good

Over: SUMNER CREEK BRANCH

1.0 MI S OF US RT 20, Stephenson, IL

Built 1969 Load: 22.0 t ADT: 150

N LORAN ROUTE

Good

Over: BR. E. FK. PLUM RIV

6 MI NE MT CARROLL, Carroll, IL

Built 1955 Load: 22.4 t ADT: 200

TR 18

Good

Over: Clear Creek

1.5 mi SW Tovey, Christian, IL

Built 2020 Load: 22.4 t ADT: 100

TR 27/EMERALD ROAD

Good

Over: BR OF FLAT BRANCH

7 MI N OF CARLYLE, Clinton, IL

Built 1940 Load: 22.4 t ADT: 500

FAS 700

Good

Over: RANGE CREEK

2.8 E UNION CENTER, Cumberland, IL

Built 1939 Load: 22.4 t ADT: 100

TR-309

Good

Over: LITTLE MUDDY CREEK

1 MI SW WINTERROWD, Effingham, IL

Built 1909 Load: 22.4 t ADT: 35

CO HWY 24 FAS-1356

Good

Over: HICKORY CREEK

.75 MI S OF MCDOWELL, Livingston, IL

Built 1962 Load: 22.4 t ADT: 100

TR 96

Good

Over: MUD CREEK

2625 N, 1290 E, Livingston, IL

Built 1958 Load: 22.4 t ADT: 100

TR 268

Good

Over: TOWN CREEK

NE-35-T7NR3W, McDonough, IL

Built 1899 Load: 22.4 t ADT: 50

TR 5A

Good

Over: SALT CREEK

2 MI NE FARMER CITY, McLean, IL

Built 1972 Load: 22.4 t ADT: 75

TR 503

Good

Over: BRANCH LONE TREE

1.5 MI NE BELLFLOWER, McLean, IL

Built 1972 Load: 22.4 t ADT: 50

Showing 14,301-14,350 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.