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 198

Poor

Over: MOSQUITO CREEK

2 MI NE MT AUBURN, Christian, IL

Built 2000 Load: 37.9 t ADT: 20

IL 23

Poor

Over: DEER CREEK TRIB.

1 MI N JCT ILL 72, DeKalb, IL

Built 1987 Load: 37.9 t ADT: 3,600

NORTH STATE ROAD

Poor

Over: DEER CREEK

3310N 1310E, DeKalb, IL

Built 1999 Load: 37.9 t ADT: 1,300

US 24

Poor

Over: DUCK CR

5.5 MI SW BANNER, Fulton, IL

Built 1934 Load: 37.9 t ADT: 2,100

RABBIT RUN RD-TR 3

Poor

Over: BIG CREEK

CTR-18-T5NR3E, Fulton, IL

Built 1992 Load: 37.9 t ADT: 50

TR 2 LA SALLE RD

Poor

Over: TRIB TO JOHNNY RUN

.15 MI S SCULLY RD, Grundy, IL

Built 1985 Load: 37.9 t ADT: 25

TR 236

Poor

Over: SPRING CREEK

6.0 MI SE GENESEO, Henry, IL

Built 1948 Load: 37.9 t ADT: 75

US 6 FAP 623

Poor

Over: FOX RIVER

0.68 MI E OF ILL 23, LaSalle, IL

Built 1928 Load: 37.9 t ADT: 10,700

STEWARD ROAD

Poor

Over: DRAINAGE DITCH

0.9 MI S OF US 30, Lee, IL

Built 1983 Load: 37.9 t ADT: 75

LOST BRIDGE(FAU 73

Poor

Over: LAKE DECATUR

ACROSS SE LAKE DECAT, Macon, IL

Built 1961 Load: 37.9 t ADT: 9,000

ILL 111 SB

Poor

Over: CAHOKIA CANAL

0.24 MI N I-55/70, Madison, IL

Built 1961 Load: 37.9 t ADT: 4,050

TR 117

Poor

Over: WEAVER CREEK

1 MI NORTH METROPOLI, Massac, IL

Built 1980 Load: 37.9 t ADT: 275

TR 418

Poor

Over: DROWNING FORK

W.CTR-15-T7NR1W, McDonough, IL

Built 1976 Load: 37.9 t ADT: 250

TR 140

Poor

Over: JONATHAN CREEK

1.2 MI N WILLIAMSBUR, Moultrie, IL

Built 1983 Load: 37.9 t ADT: 100

ILL 18

Poor

Over: DRAINAGE DITCH

0.65 MI E OF ILL 26, Putnam, IL

Built 1932 Load: 37.9 t ADT: 2,100

ILL 3

Poor

Over: NINE MILE CREEK

4 MI S EVANSVILLE, Randolph, IL

Built 1952 Load: 37.9 t ADT: 5,650

ILL 159

Poor

Over: DOUGLAS CREEK

0.8 M N SMITHTON, St. Clair, IL

Built 1954 Load: 37.9 t ADT: 9,400

I-64 EB

Poor

Over: NSRR

0.3 mi E of IL 161, St. Clair, IL

Built 1971 Load: 37.9 t ADT: 15,500

FAS 331(CH 10)

Poor

Over: FOUNTAIN CREEK

1 MI N OF EAST LYNN, Vermilion, IL

Built 1993 Load: 37.9 t ADT: 250

US 34 & 67 (NB)

Poor

Over: BNSF RR (079039A)

.8 MI N JCT US 34&67, Warren, IL

Built 1975 Load: 37.9 t ADT: 8,100

WB I-74

Poor

Over: MACKINAW RIVER

1.26 MI E OF ILL 117, Woodford, IL

Built 1964 Load: 37.9 t ADT: 14,200

EB I-74

Poor

Over: MACKINAW RIVER

1.26 MI E OF ILL 117, Woodford, IL

Built 1964 Load: 37.9 t ADT: 14,200

FAS 1425

Poor

Over: ROCK CREEK

2 MI NW OF FERRIS, Hancock, IL

Built 1988 Load: 38.2 t ADT: 20

TR 163

Poor

Over: LA MOINE RIVER

4.0 MI SW FOUNTAIN G, Hancock, IL

Built 1980 Load: 38.2 t ADT: 100

TR 111

Poor

Over: DUTCHMAN CR. TRIB.

SW1/4 SEC13 T12S,R2E, Johnson, IL

Built 1978 Load: 38.2 t ADT: 225

WATER ST/N 4550TH

Poor

Over: INDIAN CREEK

0.44 MI N OF US 34, LaSalle, IL

Built 1925 Load: 38.2 t ADT: 275

FAP-332 (ILL-1)

Poor

Over: INDIAN CREEK

2 MI S LAWRENCEVILLE, Lawrence, IL

Built 1957 Load: 38.2 t ADT: 2,550

GREEN WING ROAD

Poor

Over: GREEN RIVER

1.9 MI S LEE CENTER, Lee, IL

Built 1970 Load: 38.2 t ADT: 200

TR 85 NIKE RD

Poor

Over: RICHLAND CREEK

1 MI E OF HECKER, Monroe, IL

Built 2001 Load: 38.2 t ADT: 425

CH 4(FAS 596)

Poor

Over: NORTH FORK HADLEY CR

2.5 M N BARRY, Pike, IL

Built 2012 Load: 38.2 t ADT: 575

TR7B-BUTTER RIDGE

Poor

Over: BIG CREEK

2.5 MI NE ULLIN, Pulaski, IL

Built 2001 Load: 38.2 t ADT: 100

I-64 WB

Poor

Over: NSRR

0.3 mi E of IL 161, St. Clair, IL

Built 1971 Load: 38.2 t ADT: 15,500

TR 4

Poor

Over: BLUE CREEK

1.1 MI E ILL 26, Woodford, IL

Built 1987 Load: 38.2 t ADT: 425

TR 146

Poor

Over: PANTHER CREEK

1.5MI SE CHANDLERVIL, Cass, IL

Built 1997 Load: 38.6 t ADT: 50

MS-4410 StruckmanB

Poor

Over: W Br DuPage River

.1 MI E. BARTLETT RD, DuPage, IL

Built 1992 Load: 38.6 t ADT: 1,650

US 150(FAP 91)

Poor

Over: Decatur & Eastern IL RR

2.8 MI E OF PARIS, Edgar, IL

Built 1967 Load: 38.6 t ADT: 3,250

ILL 71 AT CEDAR PT

Poor

Over: CEDAR CREEK

2.95 MI W OF US 51, LaSalle, IL

Built 1929 Load: 38.6 t ADT: 2,250

ILL 116

Poor

Over: SCATTERING POINT CR

8.03 MI W OF I-55, Livingston, IL

Built 1970 Load: 38.6 t ADT: 3,050

PENN CORNER RD

Poor

Over: PINE CREEK

4.5 MI NW GRAND DET, Ogle, IL

Built 1961 Load: 38.6 t ADT: 200

IL 49 (FAP 840)

Poor

Over: Union Pacific Railroad

1.8 MI N OF US 136, Vermilion, IL

Built 1941 Load: 38.6 t ADT: 1,350

TR 207

Poor

Over: CREEK

4.5 MI S PHILLIPSTOW, White, IL

Built 1998 Load: 38.6 t ADT: 25

IL 1 (FAP 332)

Poor

Over: CSX RR

0.5 MI N OF US 40, Clark, IL

Built 1940 Load: 38.9 t ADT: 8,100

COURT ROAD/TR177

Poor

Over: LAKE BRANCH

1 MI NW OF ALBERS, Clinton, IL

Built 1992 Load: 38.9 t ADT: 225

FOSTER AVE

Poor

Over: N BR CHI RIV CENTER

0.1 M E PULASKI RD, Cook, IL

Built 1933 Load: 38.9 t ADT: 19,100

OLYMPIAN WAY

Poor

Over: BUTTERFIELD CR

.25M N OF LINCLN P21, Cook, IL

Built 1974 Load: 38.9 t ADT: 5,700

I-57 (NB)

Poor

Over: Eastern Illinois RR

.3 MI S NEOGA INT, Cumberland, IL

Built 1964 Load: 38.9 t ADT: 9,450

HINCKLEY ROAD

Poor

Over: BATTLE CREEK

1140N 1600F, DeKalb, IL

Built 1977 Load: 38.9 t ADT: 1,100

US 45 & US 52

Poor

Over: PRAIRIE CREEK

1.33 MI N OF US 52-IL 49, Iroquois, IL

Built 1952 Load: 38.9 t ADT: 3,250

KIRK ROAD

Poor

Over: UNION PACIFIC R.R.

1 MI E GENEVA, Kane, IL

Built 1974 Load: 38.9 t ADT: 29,300

FAP-327/FR-1699

Poor

Over: ALLISON DITCH NO 1

2 MI E AIRPORT INT, Lawrence, IL

Built 1957 Load: 38.9 t ADT: 20

Showing 27,501-27,550 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.