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

FIVE FORKSE.RD/CH

Poor

Over: SILVER CR

4 MI SSE FREEBURG, St. Clair, IL

Built 1987 Load: 27.9 t ADT: 350

HANCOCK AVENUE

Poor

Over: PECATONICA RIVER

NORTHEAST FREEPORT, Stephenson, IL

Built 1952 Load: 27.9 t ADT: 1,450

TR 238

Poor

Over: STREAM

2.5 MI SW HOOPESTON, Vermilion, IL

Built 1967 Load: 27.9 t ADT: 50

TR.223B

Poor

Over: RED RIVER

1875 EAST 640 NORTH, Woodford, IL

Built 1971 Load: 27.9 t ADT: 75

FAI 172 NB

Poor

Over: BN RR

1.5MI S I172/US24, Adams, IL

Built 1976 Load: 28.2 t ADT: 3,675

LAWRENCEVILLE ROAD

Poor

Over: PISCASAW CREEK

0.5 MI E BELVIDERE L, Boone, IL

Built 1974 Load: 28.2 t ADT: 2,050

HALPIN RD TR-208

Poor

Over: TR1B E. FK.MAZON RIV

.64 MI S. RICE RD., Grundy, IL

Built 1991 Load: 28.2 t ADT: 75

TR 157A

Poor

Over: MOSQUITO CREEK

WARNER STATION, Henry, IL

Built 1961 Load: 28.2 t ADT: 375

HOLT ROAD

Poor

Over: AUX SABLE CREEK

HOLT RD AUX SABLE, Kendall, IL

Built 1977 Load: 28.2 t ADT: 500

US 34

Poor

Over: WALNUT CREEK

1 MI SW OF ALTONA, Knox, IL

Built 1921 Load: 28.2 t ADT: 2,550

TR 249

Poor

Over: HAW CREEK

S.CTR-15-T10NR2E, Knox, IL

Built 1971 Load: 28.2 t ADT: 50

TR 37

Poor

Over: LITTLE INDIAN CREEK

N 45TH,E 2150, LaSalle, IL

Built 1974 Load: 28.2 t ADT: 200

FAU 7355(CH 24)

Poor

Over: LAKE DECATUR

LK DECATUR E SIDE, Macon, IL

Built 1957 Load: 28.2 t ADT: 2,200

TR 253(DUMMERMUTH

Poor

Over: MOSQUITO CREEK

2 MI S OF BOODY, Macon, IL

Built 1909 Load: 28.2 t ADT: 50

OLD US 51 (FAS 179

Poor

Over: CROOKED CREEK

.3 MI N CENTRAL CITY, Marion, IL

Built 1954 Load: 28.2 t ADT: 1,450

CH-43 Millstream R

Poor

Over: S Br Kishwaukee Rvr

0.4 MI N ILL 176, McHenry, IL

Built 1964 Load: 28.2 t ADT: 1,700

HAEGERS BEND RD

Poor

Over: FOX RIV INLET

0.3 MI NW ALGONQUIN, McHenry, IL

Built 1986 Load: 28.2 t ADT: 650

TR 142 A

Poor

Over: LYNN CREEK

4 MI NW OF GAUS, Moultrie, IL

Built 1956 Load: 28.2 t ADT: 100

BIG MOUND ROAD

Poor

Over: STILLMAN CREEK

2 M SE STILLMAN VALE, Ogle, IL

Built 1981 Load: 28.2 t ADT: 300

TR 294 A

Poor

Over: COLD RUN CREEK

3.0MI NW NEBO, Pike, IL

Built 1998 Load: 28.2 t ADT: 50

TR 345

Poor

Over: Six Mile Tributary

1.59 mi E US 54, Pike, IL

Built 1977 Load: 28.2 t ADT: 50

CH 6

Poor

Over: INDIAN CREEK

0.7 MI E OF IL 142, Saline, IL

Built 1992 Load: 28.2 t ADT: 75

EMERALD MND RD/CH

Poor

Over: LITTLE SILVER CREEK

0.5MI E ILL RTE 4, St. Clair, IL

Built 1960 Load: 28.2 t ADT: 125

OLD IL 26

Poor

Over: E BR RICHLAND CREEK

.7 MI N ORANGEVILLE, Stephenson, IL

Built 1927 Load: 28.2 t ADT: 475

TR 295

Poor

Over: CROOKED CREEK

0.94 MI S OF CH 3, Union, IL

Built 1900 Load: 28.2 t ADT: 100

FAP-821 (ILL-15)

Poor

Over: MILLER CREEK

1.0 MI W SIMS RD, Wayne, IL

Built 1957 Load: 28.2 t ADT: 3,050

TR 150

Poor

Over: HARTLINE CREEK

NEAR ELCO, Alexander, IL

Built 1980 Load: 28.5 t ADT: 125

FAI 70 EB

Poor

Over: MID FK SHOAL CREEK

2.3 MI E POCAHONTAS, Bond, IL

Built 1967 Load: 28.5 t ADT: 13,100

FAI 70 WB

Poor

Over: MID FK SHOAL CREEK

2.3 MI E POCAHONTAS, Bond, IL

Built 1967 Load: 28.5 t ADT: 13,100

OIL VALLEY SCHOOL

Poor

Over: JOHNSON CREEK

2 MI SE MT CARROLL, Carroll, IL

Built 1986 Load: 28.5 t ADT: 200

TR 27

Poor

Over: WILDCAT SLOUGH

4 MI NW RANTOUL, Champaign, IL

Built 1982 Load: 28.5 t ADT: 75

DIVISION ST (RIVER

Poor

Over: N BR CHI RIVER

1129 W DIVISION, Cook, IL

Built 1904 Load: 28.5 t ADT: 6,700

NETTLE CREEK RD CH

Poor

Over: WEST FORK NETTLE CR

0.36 MI N OF TR 39, Grundy, IL

Built 1976 Load: 28.5 t ADT: 175

GRAND RIDGE ROAD

Poor

Over: BILLS RUN

0.6 MI E KINSMAN RD, Grundy, IL

Built 1939 Load: 28.5 t ADT: 1,150

TR 86 SARATOGA RD

Poor

Over: W FORK NETTLE CREEK

0.67 MI N HOGE RD, Grundy, IL

Built 1983 Load: 28.5 t ADT: 275

NELSON RD TR-15

Poor

Over: E. FK. NETTLE CR

.39 MI E.SARATOGA RD, Grundy, IL

Built 1991 Load: 28.5 t ADT: 200

BROADWAY ST N/MS60

Poor

Over: CLAYPOOL DRAIN DITCH

0.5 MI N MC ARDLE RD, Grundy, IL

Built 1982 Load: 28.5 t ADT: 1,650

BASELINE RD/MS 199

Poor

Over: ROB ROY CREEK

0.01 MI W OFRT47, Kendall, IL

Built 1966 Load: 28.5 t ADT: 1,350

FAS261 CH34

Poor

Over: STREAM

N 27TH,E 950, LaSalle, IL

Built 1961 Load: 28.5 t ADT: 1,000

TR-112-A

Poor

Over: BR FOURMILE GROVE CR

E 6TH N 4640, LaSalle, IL

Built 1961 Load: 28.5 t ADT: 25

FAP-332 (ILL-1)

Poor

Over: STREAM

.25 MI N BIRDS RD, Lawrence, IL

Built 1921 Load: 28.5 t ADT: 3,600

CO HWY 28 FAS 2055

Poor

Over: ROOKS CREEK

2.5 MI S OF CORNELL, Livingston, IL

Built 1970 Load: 28.5 t ADT: 200

TR 137B

Poor

Over: TURTLE CREEK

1455 E, 1600 N, Livingston, IL

Built 1924 Load: 28.5 t ADT: 375

TR 87 (TH-D10)

Poor

Over: N BRANCH CROW CREEK

T29N-R1W-3PM SEC 11, Marshall, IL

Built 1965 Load: 28.5 t ADT: 50

CH43 (MILLSTREAM R

Poor

Over: KISHWAUKEE RIVER

0.5 MI. N. ILL. 176, McHenry, IL

Built 1964 Load: 28.5 t ADT: 1,700

TR 5

Poor

Over: DRAINAGE DITCH

3.5 MI W OF ARTHUR, Moultrie, IL

Built 1989 Load: 28.5 t ADT: 50

FAS-2823

Poor

Over: EAGLE SLOUGH DRAIN

5 MI S FAIRFIELD, Wayne, IL

Built 1987 Load: 28.5 t ADT: 75

THEODORE STREET

Poor

Over: ROCK RUN CREEK

1.5M E. I-55, Will, IL

Built 1996 Load: 28.5 t ADT: 8,150

TR 209 A

Poor

Over: KASKASKIA DITCH

4.8 MI SW CHAMPAIGN, Champaign, IL

Built 1974 Load: 28.8 t ADT: 350

TR-179

Poor

Over: LAWS CREEK

2.8 MI S INGRAHAM, Clay, IL

Built 1982 Load: 28.8 t ADT: 100

Showing 26,851-26,900 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.