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

ILL 3

Poor

Over: HORSE CREEK OVERFLOW

2.6 MI S RED BUD, Randolph, IL

Built 1952 Load: 32.7 t ADT: 4,650

IL 103

Poor

Over: TOWN BRANCH

1.3M E US 24, Schuyler, IL

Built 1929 Load: 32.7 t ADT: 1,250

NB ILL 116

Poor

Over: SPRING CREEK

NEAR JCT ILL 116 26, Tazewell, IL

Built 1928 Load: 32.7 t ADT: 17,200

TR-254

Poor

Over: RANDOLPH DRAIN DITCH

1 MI NE CENTERVILLE, White, IL

Built 1981 Load: 32.7 t ADT: 25

DEARBORN ST

Poor

Over: MAIN BR CHICAGO RIV

100 W & 307 N, Cook, IL

Built 1963 Load: 33.0 t ADT: 5,600

100TH ST

Poor

Over: CALUMET RIVER

3300 E 100TH STREET, Cook, IL

Built 1927 Load: 33.0 t ADT: 3,100

IL 64 FAP 17

Poor

Over: DRAINAGE DITCH

2.3 MI W SYCAMORE, DeKalb, IL

Built 1937 Load: 33.0 t ADT: 4,500

WATERMAN ROAD

Poor

Over: BR OF SOMONAUK CREEK

1015N 900E, DeKalb, IL

Built 1985 Load: 33.0 t ADT: 425

GALE RD - TR 330

Poor

Over: BIG CREEK

CTR-35-T6NR3E, Fulton, IL

Built 1971 Load: 33.0 t ADT: 50

TR 278

Poor

Over: FLOUR CREEK

3.0 MI W AUGUSTA, Hancock, IL

Built 1963 Load: 33.0 t ADT: 50

TR 94A

Poor

Over: TRIB. TO SPRING CR

2 MI E. 45&24-.25 N, Iroquois, IL

Built 1928 Load: 33.0 t ADT: 25

TR 1

Poor

Over: FOUNTAIN CR

1.5 MI N EAST LYNN, Iroquois, IL

Built 1958 Load: 33.0 t ADT: 50

CH 8 STEWARD RD

Poor

Over: DRY RUN CREEK

4.5 MI S STEWARD, Lee, IL

Built 1959 Load: 33.0 t ADT: 125

TR 268

Poor

Over: GOOSEBERRY CREEK

3045 N, 3200 E, Livingston, IL

Built 1978 Load: 33.0 t ADT: 100

SOUTH BEASON RD

Poor

Over: DEER CK BR

.25 MI E LINCOLN, Logan, IL

Built 1965 Load: 33.0 t ADT: 800

FAI 270 WB

Poor

Over: COUNTY DITCH

1.03mi W. of IL 157, Madison, IL

Built 1963 Load: 33.0 t ADT: 24,900

W. KOELLER ROAD

Poor

Over: EAST PLUM RIVER

4 MI. SW. PEARL CITY, Stephenson, IL

Built 1992 Load: 33.0 t ADT: 50

SB I-155

Poor

Over: MACKINAW RIVER

1mi N JCT I-155 /122, Tazewell, IL

Built 1970 Load: 33.0 t ADT: 6,900

COVELL RD

Poor

Over: JOHNSON CREEK

3 MI NE OF FULTON, Whiteside, IL

Built 1986 Load: 33.0 t ADT: 50

MILL RD

Poor

Over: PISCASAW CREEK

1.5 MI S OF CAPRON, Boone, IL

Built 1975 Load: 33.4 t ADT: 125

TR 155

Poor

Over: STREAM

2.5 MI S ROYAL, Champaign, IL

Built 1982 Load: 33.4 t ADT: 50

FAS 517(CH 11)

Poor

Over: DITCH

W OF THOMASBORO, Champaign, IL

Built 2002 Load: 33.4 t ADT: 800

IL 1 (HALSTED ST

Poor

Over: LITTLE CAL RIVER

0.2 M S 127TH ST, Cook, IL

Built 1931 Load: 33.4 t ADT: 13,700

HINTZ RD.

Poor

Over: ECHO LAKE

0.05M.W.WHEELING RD., Cook, IL

Built 1987 Load: 33.4 t ADT: 12,400

FULLERTON AVE

Poor

Over: N BR CHICAGO RIVER

2400 N & 1900 W, Cook, IL

Built 1896 Load: 33.4 t ADT: 17,600

FAS-176 (Perry Rd)

Poor

Over: Br of Battle Creek

1500N 1540E, DeKalb, IL

Built 1990 Load: 33.4 t ADT: 2,150

FAP 323(US 36)

Poor

Over: KASKASKIA RIVER

W OF FICKLIN, Douglas, IL

Built 1927 Load: 33.4 t ADT: 3,550

TR 155/GOODFARM RD

Poor

Over: E FORK MAZON RIVER

1 S SOUTH WILMINGTON, Grundy, IL

Built 1999 Load: 33.4 t ADT: 50

MARKET ST-IL 120RM

Poor

Over: UNUSED LAND

200 FT E SHERIDAN RD, Lake, IL

Built 1966 Load: 33.4 t ADT: 450

TR-20A

Poor

Over: SPRING CREEK

E 1ST N 3660, LaSalle, IL

Built 1977 Load: 33.4 t ADT: 100

TR 257

Poor

Over: WABASH RIVER

ST. FRANCISVILLE, Lawrence, IL

Built 1906 Load: 33.4 t ADT: 500

TIMBER CREEK RD

Poor

Over: SUGAR CREEK

0.1 MI W SUGAR GROVE, Lee, IL

Built 1969 Load: 33.4 t ADT: 125

FAS-2055 (CH-28)

Poor

Over: Ida Creek

2390 N, 1050 E, Livingston, IL

Built 1935 Load: 33.4 t ADT: 200

TR 251(HOPEWELL RD

Poor

Over: FINLEY CREEK

2.3 MI S MT ZION, Macon, IL

Built 1979 Load: 33.4 t ADT: 50

CH61/AIRPORT ROAD

Poor

Over: PIASA CREEK

1.1MI S JERSEY CO LN, Madison, IL

Built 1958 Load: 33.4 t ADT: 650

CH 31 ELLIS RD

Poor

Over: BUCKEYE BR

3.8MI E ST JACOB, Madison, IL

Built 1972 Load: 33.4 t ADT: 1,200

CH-38

Poor

Over: NORTH FORK CREEK

5 MI E VERNON, Marion, IL

Built 1909 Load: 33.4 t ADT: 75

GALL RD/ FAU 9345

Poor

Over: CARR CREEK

COLUMBIA, Monroe, IL

Built 1978 Load: 33.4 t ADT: 725

WOODBURN ROAD

Poor

Over: UNNAMED STREAM

5.5 MI. NE. BYRON, Ogle, IL

Built 1995 Load: 33.4 t ADT: 225

FRONTAGE RD

Poor

Over: BARRVILLE CR

2MI S SPARLAND, Peoria, IL

Built 1924 Load: 33.4 t ADT: 25

WB I-474

Poor

Over: BNSF RR - KICKAPOO CR

S1/2 SEC 26 KICKAPOO, Peoria, IL

Built 1978 Load: 33.4 t ADT: 13,000

TR 245

Poor

Over: BLUE CR-LAKE PITTSFD

3.0 MI NE PITTSFIELD, Pike, IL

Built 1961 Load: 33.4 t ADT: 150

I-55/70 & US 40 EB

Poor

Over: DRAINAGE CANAL

1/2 Mi E of E St Lou, St. Clair, IL

Built 1960 Load: 33.4 t ADT: 33,650

ILL 177

Poor

Over: Silver Cr Overflow E

2.3mi W IL 4, St. Clair, IL

Built 1961 Load: 33.4 t ADT: 7,000

IL 111

Poor

Over: A&SRR

0.14mi S of I-64, St. Clair, IL

Built 1973 Load: 33.4 t ADT: 13,900

MERIDIAN RD

Poor

Over: CN RR

0.5 MI S CUNNINGHAM, Winnebago, IL

Built 1954 Load: 33.4 t ADT: 2,450

CH 14

Poor

Over: CEDAR CREEK

3.4 MI NE LAPRAIRIE, Adams, IL

Built 1921 Load: 33.7 t ADT: 250

I-290 IKE(CONGRESS

Poor

Over: BETWEEN RIV & PO

0.5 M E I-90&94, Cook, IL

Built 1954 Load: 33.7 t ADT: 80,900

HALSTED ST

Poor

Over: S BR CHICAGO RIVER

2404 S,800 W, Cook, IL

Built 1934 Load: 33.7 t ADT: 6,050

ILL 154

Poor

Over: REND LAKE

3.3 MI E SESSER, Franklin, IL

Built 1966 Load: 33.7 t ADT: 2,650

Showing 27,251-27,300 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.