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 360

Good

Over: BUCK CREEK

0.5 MI NW CLARKSVILL, McLean, IL

Built 1969 Load: 25.9 t ADT: 75

TR 236

Good

Over: LITTLE KICKAPOO CR

3.2 MI N HEYWORTH, McLean, IL

Built 1962 Load: 25.9 t ADT: 200

FAS 1573

Good

Over: ROCK CREEK

3.0 MI W ATHENS, Menard, IL

Built 1978 Load: 25.9 t ADT: 750

EAST LINE RD

Good

Over: BR KILLBUCK CR

2 MI NE CRESTON, Ogle, IL

Built 1970 Load: 25.9 t ADT: 50

CLAYBAUGH RD

Good

Over: E BR. SWAB RUN CK

NLINENW1/4 31T10NR5E, Peoria, IL

Built 1969 Load: 25.9 t ADT: 25

TR 16

Good

Over: WOLF RUN

2.5 MI NE OF CISCO, Piatt, IL

Built 1971 Load: 25.9 t ADT: 75

TR 35

Good

Over: MADDEN CREEK

3.0 MI SE MANSFIELD, Piatt, IL

Built 1978 Load: 25.9 t ADT: 250

FARGO RD

Good

Over: MEREDOSIA DITCH

4 MI W OF ERIE, Rock Island, IL

Built 1976 Load: 25.9 t

FLANSBURG RD

Good

Over: BR OF PECATONICA RIV

0.7 MI N US RT 20, Stephenson, IL

Built 1957 Load: 25.9 t ADT: 250

ILL 29

Good

Over: MAIN DITCH TRIB

2 MI S OF ILL 122, Tazewell, IL

Built 1962 Load: 25.9 t ADT: 1,150

ALLEN RD - TR 64

Good

Over: MAIN DITCH

NW-28-T22NR5W, Tazewell, IL

Built 1962 Load: 25.9 t ADT: 25

STEWART ST

Good

Over: COLE CR

N1/2-5-T25NR4W, Tazewell, IL

Built 1953 Load: 25.9 t ADT: 800

TR 70

Good

Over: S. HENDERSON CREEK

SE-13-T10NR3W, Warren, IL

Built 1977 Load: 25.9 t ADT: 25

FAS-815

Good

Over: DRAINAGE DITCH

2 MI E BURNT PRAIRIE, White, IL

Built 1937 Load: 25.9 t ADT: 100

ILL 161

Good

Over: DR TO SANTA FE DITCH

2.5 MI E BARTELSO, Clinton, IL

Built 1940 Load: 26.2 t ADT: 2,250

FAS 674(CH 31)

Good

Over: LITTLE WABASH TRIB

3 MI SW OF MATTOON, Coles, IL

Built 1973 Load: 26.2 t ADT: 1,300

FAS 323

Good

Over: SUGAR CREEK

2.7 Mi. E. of Ill. 1, Iroquois, IL

Built 1963 Load: 26.2 t ADT: 775

FAS 323 ONARGA RD

Good

Over: SHAVETAIL CREEK

0.19 MI W OF ILL 49, Iroquois, IL

Built 1989 Load: 26.2 t ADT: 450

FAS 819 - CH 39

Good

Over: BIG MUDDY RIVER

2.5 MI S WALNUT HILL, Jefferson, IL

Built 2000 Load: 26.2 t ADT: 1,150

TR 282A

Good

Over: DRAINAGE DITCH

1520 N, 3500 E, Livingston, IL

Built 1945 Load: 26.2 t ADT: 100

SBI-2 (OLD 51)

Good

Over: KICKAPOO CREEK

1.0 M N OF US 136, McLean, IL

Built 1969 Load: 26.2 t ADT: 1,050

TR 56

Good

Over: ROCK CREEK

1.5 M NW OF CARLOCK, McLean, IL

Built 1971 Load: 26.2 t ADT: 100

TR 404

Good

Over: W FORK SALT CREEK

1.0 MI W LEROY, McLean, IL

Built 1969 Load: 26.2 t ADT: 50

TR 81

Good

Over: BR MACKINAW R

0.5 MI S CLARKSVILLE, McLean, IL

Built 1968 Load: 26.2 t ADT: 50

TR 168 A

Good

Over: KICKAPOO CREEK

3 MI WSW HEYWORTH, McLean, IL

Built 1976 Load: 26.2 t ADT: 450

MT MORRIS ROAD

Good

Over: LEAF RIVER

1 MI W LEAF RIVER, Ogle, IL

Built 1971 Load: 26.2 t ADT: 150

TR 103

Good

Over: WOLF RUN CREEK

2 MI NE OF CISCO, Piatt, IL

Built 1969 Load: 26.2 t ADT: 25

ILL 106

Good

Over: KISER CREEK

4.1MI SE BARRY, Pike, IL

Built 1994 Load: 26.2 t ADT: 1,600

MORRIS HILL RD-TR9

Good

Over: STREAM

E.CTR-30-T23NR4W, Tazewell, IL

Built 1957 Load: 26.2 t ADT: 75

ARMINGTON RD-TR 29

Good

Over: M. F. SUGAR CREEK

SW-23-T22NR2W, Tazewell, IL

Built 1962 Load: 26.2 t ADT: 125

TR 307

Good

Over: HAYES BRANCH

2.4 MI SW PESOTUM, Champaign, IL

Built 1972 Load: 26.6 t ADT: 75

I355 SB

Good

Over: LONG RUN CREEK

.4M N OF 135TH, Cook, IL

Built 2007 Load: 26.6 t ADT: 41,150

TR-283

Good

Over: LIMESTONE CREEK

2.5 MI W MASON, Effingham, IL

Built 1982 Load: 26.6 t ADT: 50

FAS-721

Good

Over: RAMSEY CREEK

0.5 MI W RAMSEY, Fayette, IL

Built 1934 Load: 26.6 t ADT: 725

TOWNSHIP RD NO 127

Good

Over: WELSH HOLLOW

5 MI W STOCKTON, Jo Daviess, IL

Built 1967 Load: 26.6 t ADT: 50

TR 22

Good

Over: LICK CREEK

1M SO 1M W SCOTTVILL, Macoupin, IL

Built 1986 Load: 26.6 t ADT: 20

FAS 1438 - CH 14

Good

Over: SPRING CREEK

CTR-28-T6NR3W, McDonough, IL

Built 1955 Load: 26.6 t ADT: 475

TR 188

Good

Over: POPE CREEK

SE-35-T14NR3W, Mercer, IL

Built 1980 Load: 26.6 t ADT: 50

TR 16

Good

Over: STREAM

3 MI NE CISCO, Piatt, IL

Built 1971 Load: 26.6 t ADT: 75

TR 327

Good

Over: SIXMILE CREEK

3.0 MI SW PITTSFIELD, Pike, IL

Built 1994 Load: 26.6 t ADT: 25

FAS 1930

Good

Over: BAY CREEK

3.5 MI N BAY CITY, Pope, IL

Built 1963 Load: 26.6 t ADT: 275

TR 560

Good

Over: WILLOW BRANCH

1.0 S OF ILLIOPOLIS, Sangamon, IL

Built 1966 Load: 26.6 t ADT: 50

TR 186

Good

Over: PRAIRIE CREEK

W.CTR-29-T22NR3W, Tazewell, IL

Built 1960 Load: 26.6 t ADT: 10

TR 186

Good

Over: SWAN CREEK

SW-9-T8NR1W, Warren, IL

Built 1956 Load: 26.6 t ADT: 125

YATES ROAD

Good

Over: WINNEBAGO DITCH

8 MI S. ROCK FALLS, Whiteside, IL

Built 1955 Load: 26.6 t ADT: 150

TR 60

Good

Over: TRIB VERMILION R

3085 N, 900 E, Livingston, IL

Built 1972 Load: 26.7 t ADT: 50

TR 37 B

Good

Over: UPPER SALT CREEK

2.2 MI NE RANTOUL, Champaign, IL

Built 1973 Load: 26.9 t ADT: 150

I-88 EB

Good

Over: SALT CREEK

1.3M.E.IL-83, DuPage, IL

Built 1958 Load: 26.9 t ADT: 59,550

FAS-709 (CH-19)

Good

Over: LITTLE SALT CREEK

4 MI S TEUTOPOLIS, Effingham, IL

Built 1939 Load: 26.9 t ADT: 1,300

TR 308

Good

Over: TRIB. TO MUD CR

1.5 7I SE MILFORD, Iroquois, IL

Built 1956 Load: 26.9 t ADT: 75

Showing 14,751-14,800 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.