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

FAS 2056 CH 27

Unknown

Over: I-55

1.5 MI W. OF US 66, Livingston, IL

Built 1972 ADT: 21,800

TR 101

Unknown

Over: I-55

4 MI NE OF PONTIAC, Livingston, IL

Built 1974 ADT: 22,300

FAS 348 CH-1

Unknown

Over: I-55

0.32 MI.W. OF US 66, Livingston, IL

Built 1972 ADT: 20,900

TR 29

Unknown

Over: I-55/OR#66/ICG RR

2 MI S. OF DWIGHT, Livingston, IL

Built 1977 ADT: 20,900

ICG

Unknown

Over: TR 99

EAST SIDE/OLD RT 66, Livingston, IL

Built 1900 ADT: 100

AT & SF RR

Unknown

Over: ILL RTE 17

1.3 MI W OF ILL 23, Livingston, IL

Built 1939 ADT: 1,700

IL 54

Unknown

Over: IL 121 & IC RR

SE EDGE MT. PULASKI, Logan, IL

Built 1971 ADT: 2,850

IC RR

Unknown

Over: IL 121

.7M N IL54-MT PULASK, Logan, IL

Built 1940 ADT: 2,850

FAS 566 (CH 10)

Unknown

Over: I-55

ELKHART INTERCHANGE, Logan, IL

Built 1974 ADT: 34,900

CH S13

Unknown

Over: I-55

BROADWELL INTERCHNGE, Logan, IL

Built 1974 ADT: 31,800

BL 55 (OLD US 66)

Unknown

Over: I-55

BL 55 INT-SW LINCOLN, Logan, IL

Built 1973 ADT: 27,500

CH E52

Unknown

Over: I-55

.8 S IL10-1.6 W BL55, Logan, IL

Built 1973 ADT: 27,500

I-55 SB

Unknown

Over: IL 10 & UP RR

IL 10 INT- W LINCOLN, Logan, IL

Built 1974 ADT: 3,100

I-55 NB

Unknown

Over: IL 10 & UP RR

IL 10 INT- W LINCOLN, Logan, IL

Built 1974 ADT: 6,350

I-155 NB

Unknown

Over: I-55 SB

I-55/155 NW LINCOLN, Logan, IL

Built 1973 ADT: 21,500

I-155SB TO 55NB RA

Unknown

Over: I-155 NB & I-55 SB

I-55/155 NW LINCOLN, Logan, IL

Built 1973 ADT: 10,600

OLD IL 121

Unknown

Over: I-55

2.7 N IL10-1 N BL 55, Logan, IL

Built 1973 ADT: 21,500

CH S27

Unknown

Over: I-55

3.1 E I155/1 N BL 55, Logan, IL

Built 1973 ADT: 21,500

I-55 SB

Unknown

Over: UP RR & BUS 55

BUS55 INT NE LINCOLN, Logan, IL

Built 1974 ADT: 1,800

I-55 NB

Unknown

Over: UP RR & BUS 55

BUS55 INT NE LINCOLN, Logan, IL

Built 1974 ADT: 1,800

TR 65A

Unknown

Over: I-55/UP RR/W FR RD

LAWNDALE 3.5 N BUS55, Logan, IL

Built 1974 ADT: 23,200

I-55 NB

Unknown

Over: RACE STREET

.8M SW ATLANTA INTCH, Logan, IL

Built 1976 ADT: 250

I-55 SB

Unknown

Over: RACE STREET

.8M SW ATLANTA INTCH, Logan, IL

Built 1976 ADT: 250

CH 6 (FAS 557)

Unknown

Over: I- 55

ATLANTA INTERCHANGE, Logan, IL

Built 1976 ADT: 21,600

TR 87

Unknown

Over: FAI 155

.6MI N I-155/I-55, Logan, IL

Built 1986 ADT: 10,600

TR 79

Unknown

Over: FAI 155

1.9MI N I-155/I-55, Logan, IL

Built 1986 ADT: 10,600

TR 33

Unknown

Over: FAI 155

I-155 INT HARTSBURG, Logan, IL

Built 1988 ADT: 10,600

EMDEN RD

Unknown

Over: I-155

1M S IL 136, Logan, IL

Built 1991 ADT: 700

US 136

Unknown

Over: I-155

I-155/US 136 INTCHG, Logan, IL

Built 1991 ADT: 11,000

ILL CENT RR

Unknown

Over: CH 1

IN S MT PULASKI, Logan, IL

Built 1900 ADT: 600

WALKWAY

Unknown

Over: CH 10

0.5 MI E ELKHART, Logan, IL

Built 1915 ADT: 700

CH 12S

Unknown

Over: TR 199A

1 MI S ELKHART, Logan, IL

Built 1982 ADT: 600

IC&G RR

Unknown

Over: FAU 7706

LINCOLN, Logan, IL

Built 1900 ADT: 4,150

IC&G RR SPUR TRA

Unknown

Over: FAU 7716

COLLEGE STREET, Logan, IL

Built 1911 ADT: 550

IC&G RR

Unknown

Over: KICKAPOO STRFAU7717

KICKAPOO &GERMAN, Logan, IL

Built 1909 ADT: 1,250

N&S RR

Unknown

Over: US 51(FAP 710)

ON MAIN ST DECATUR, Macon, IL

Built 1934 ADT: 10,100

IC RR

Unknown

Over: US 51(FAP 710)

S MAIN DECATUR, Macon, IL

Built 1933 ADT: 7,600

US-51 SB (FAP 710)

Unknown

Over: IL 105(FAP 712)

IN DECATUR, Macon, IL

Built 1962 ADT: 1,900

US-51NB (FAP 710AL

Unknown

Over: IL 105(FAP 712)

IN DECATUR, Macon, IL

Built 1963 ADT: 7,100

IC RR

Unknown

Over: US 51(FAP 710)

1 MI S OF DECATUR, Macon, IL

Built 1959 ADT: 9,300

IC RR

Unknown

Over: US 51(FAP 710)

IN DECATUR, Macon, IL

Built 1965 ADT: 8,700

US 51(FAP 710 ALT)

Unknown

Over: NS RR & CERRO GORDO ST.

IN DECATUR, Macon, IL

Built 1966 ADT: 850

US 36(FAP 320)

Unknown

Over: LAKE SHORE DR(U 7390

IN DECATUR, Macon, IL

Built 1954 ADT: 200

IT RR

Unknown

Over: IL 121(FAP 320)

N OF GARFIELD-DECATR, Macon, IL

Built 1943 ADT: 15,100

CN RR

Unknown

Over: FAP 714 (IL 105)

SWCL OF DECATUR, Macon, IL

Built 1962 ADT: 9,800

IC RR

Unknown

Over: PERSHING(FAP 320)

IN DECATUR, Macon, IL

Built 1959 ADT: 18,100

IC RR

Unknown

Over: OAKLAND(FAU 7429)

IN DECATUR, Macon, IL

Built 1934 ADT: 14,800

N&S RR

Unknown

Over: FAIRVIEW(FAU 7429)

IN DECATUR, Macon, IL

Built 1900 ADT: 9,500

TR 150(GREENSWITCH

Unknown

Over: I-72

1.83 MI S FAS 549, Macon, IL

Built 1972 ADT: 12,300

TR 4(ACOM RD)

Unknown

Over: I-72

1.5 MI SW NIANTIC, Macon, IL

Built 1976 ADT: 14,500

Showing 2,501-2,550 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.