State profile · Near national median SD

Illinois bridge safety

Condition ratings, load ratings, and structural-deficiency data for every public highway bridge in Illinois — drawn straight from the FHWA National Bridge Inventory.

27,743
Public bridges
41.2%
Good condition
7.9%
Poor condition
7.9%
Structurally deficient

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 rated 0-4

Structurally Deficient

7.9%

2,186 bridges flagged for repair priority

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 — Structurally deficient share 26.3%
National avg

Lower is better. Bar maxes at 30% (worst-state ceiling). National average sits at 7.0%.

Condition Distribution

Bridge inventory deck-condition mix — Illinois (FHWA NBI)

Illinois41.185163825109036%36.47046101719353%7.879465090293047%7.879465090293047%GoodFairPoorStructurally Deficient
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 on the structurally deficient leaderboard (lower share = better)

States are ranked by share of bridges flagged structurally deficient — the FHWA classification for any span where deck, superstructure, or substructure carries a condition rating of 4 or below. Lower percentages indicate stronger maintenance funding and inspection follow-through. States here sit immediately above and below Illinois on the same metric.

44

Rhode Island

7.69% top marginal rate
Structure
Progressive
Burden @ $100K
$78

31

Nebraska

7.73% top marginal rate
Structure
Progressive
Burden @ $100K
$15,571
Selected

17

Illinois

7.88% top marginal rate
Structure
Progressive
Burden @ $100K
$27,743

25

Massachusetts

7.96% top marginal rate
Structure
Progressive
Burden @ $100K
$5,314

29

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 composite NBI rating. Each is inspected at least every 24 months.

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

Structurally Deficient

Over: WILSON CREEK

NE-35-T3NR2E, Fulton, IL

Built 1935 Load: 1.3 t ADT: 10

TR 10-B

Structurally Deficient

Over: KING CREEK

W EDGE OF MINERAL, Bureau, IL

Built 1899 Load: 1.6 t ADT: 10

TR-6

Structurally Deficient

Over: DRAINAGE DITCH

3.5 MI NE DIETERICH, Effingham, IL

Built 1909 Load: 1.6 t ADT: 25

TR208K(TWIN BRIDGE

Structurally Deficient

Over: BIG CREEK

NE EDGE MT ZION, Macon, IL

Built 1967 Load: 1.9 t ADT: 375

All Bridges in Illinois

FAP-332 (ILL-1)

Good

Over: STREAM

1.5 MI S CARMI, White, IL

Built 1995 Load: 32.4 t ADT: 4,950

TR-158

Good

Over: SEVEN MILE CREEK

4 MI NE ENFIELD, White, IL

Built 1981 Load: 32.4 t ADT: 25

FAS-890

Good

Over: LITTLE WABASH RIVER

1 MI SW EMMA, White, IL

Built 1982 Load: 32.4 t ADT: 50

TR-41

Good

Over: RANDOLPH DRAIN DITCH

1.25 MI NE CENTERVIL, White, IL

Built 1987 Load: 32.4 t ADT: 25

TR-219

Good

Over: DRAINAGE DITCH

3.5 MI SE ENFIELD, White, IL

Built 1995 Load: 32.4 t ADT: 10

1850 N

Good

Over: BROAD RUN

2.5 MI NE ENFIELD, White, IL

Built 2009 Load: 32.4 t ADT: 25

1200 N

Good

Over: LITTLE WABASH TRIB

2 MI S CARMI, White, IL

Built 2009 Load: 32.4 t ADT: 25

TR-128

Good

Over: CREEK

6 MI SE NORRIS CITY, White, IL

Built 2010 Load: 32.4 t ADT: 50

TR-140

Good

Over: LICK CREEK

3 MI NE NORRIS CITY, White, IL

Built 2009 Load: 32.4 t ADT: 75

TR-140

Good

Over: TRIB TO LICK CREEK

3 MI NE NORRIS CITY, White, IL

Built 2009 Load: 32.4 t ADT: 75

TR-269

Good

Over: WABASH LEVEE DITCH

1.5 MI SW MAUNIE, White, IL

Built 2010 Load: 32.4 t ADT: 125

TR 235

Good

Over: SEVEN MILE CREEK

T5 R8E SEC 26, White, IL

Built 2011 Load: 32.4 t ADT: 25

FAS 890

Good

Over: LITTLE WABASH TRIB

1 MI E HERALD, White, IL

Built 2010 Load: 32.4 t ADT: 50

100E - TR 28A

Good

Over: BEAR CREEK

0.35MI SOUTH FAS 881, White, IL

Built 2012 Load: 32.4 t ADT: 100

TR 120

Good

Over: INDIAN CREEK

2 MI SE NORRIS CITY, White, IL

Built 2014 Load: 32.4 t ADT: 50

CH 11

Good

Over: Seven Mile Creek

1600 N 640 E, White, IL

Built 2013 Load: 32.4 t ADT: 50

475 E

Good

Over: PRAIRIE CREEK

4.25 MI NE SPRINGRTN, White, IL

Built 2015 Load: 32.4 t ADT: 50

500 E

Good

Over: LICK CREEK

850N/500E, White, IL

Built 2014 Load: 32.4 t ADT: 75

TR-302

Good

Over: Drainage Ditch

3 MI SW CROSSVILLE, White, IL

Built 2017 Load: 32.4 t ADT: 25

600 N

Good

Over: LITTLE WABASH TRIB

1 MI W HERALD, White, IL

Built 2016 Load: 32.4 t ADT: 50

TR 185

Good

Over: TRIB TO LOST CREEK

0.5 MI E OF ENFIELD, White, IL

Built 2014 Load: 32.4 t ADT: 150

TR-335

Good

Over: Indian Creek

1.5MI SE NORRIS CITY, White, IL

Built 2017 Load: 32.4 t ADT: 50

CH 13

Good

Over: DRAINAGE DITCH

5.5 SE BURNT PRAIRIE, White, IL

Built 2004 Load: 32.4 t ADT: 75

MORELL ST #7600

Good

Over: CREEK

CROSSVILLE, White, IL

Built 2001 Load: 32.4 t ADT: 500

US 30

Good

Over: STREAM

3.6 MI W ROCK FALLS, Whiteside, IL

Built 1940 Load: 32.4 t ADT: 5,300

BEACH ROAD

Good

Over: TRIB. ROCK CREEK

3.5 MI N OF MORRISON, Whiteside, IL

Built 2006 Load: 32.4 t ADT: 25

MELLOTTS ROAD

Good

Over: LYNN CREEK

3.2 MI NW OF FENTON, Whiteside, IL

Built 1989 Load: 32.4 t ADT: 50

TR 42/CHASE RD

Good

Over: BR COUNTY DITCH

2 MI SE OF FULTON, Whiteside, IL

Built 2015 Load: 32.4 t ADT: 625

OSAGE ROAD

Good

Over: DRAINAGE DITCH

2 M SW DEER GROVE, Whiteside, IL

Built 1983 Load: 32.4 t ADT: 75

TR-141 (Matthew Rd

Good

Over: Deer Creek

7 MI W OF ROCKFALLS, Whiteside, IL

Built 2016 Load: 32.4 t ADT: 150

KEELEY RD

Good

Over: BR OF COUNTY DITCH

4 MI NW OF ERIE, Whiteside, IL

Built 2013 Load: 32.4 t ADT: 25

AVENUE F

Good

Over: UNNAMED CREEK

0.2 M S OF ST MARYS, Whiteside, IL

Built 1981 Load: 32.4 t ADT: 150

ST MARYS ROAD

Good

Over: UNNAMED CREEK

0.1 M W OF IL RT 40, Whiteside, IL

Built 1979 Load: 32.4 t ADT: 1,550

WILLOW CREEK RD

Good

Over: BR. OF ELKHORN CRK

4 MI N. OF STERLING, Whiteside, IL

Built 2004 Load: 32.4 t ADT: 50

ACKER RD

Good

Over: COTTONWOOD CREEK

3 MI E. OF FULTON, Whiteside, IL

Built 1996 Load: 32.4 t ADT: 150

PARK ROAD

Good

Over: COON CREEK

PROHETSTOWN ST. PARK, Whiteside, IL

Built 1995 Load: 32.4 t ADT: 400

RENWICK RD

Good

Over: MINK CREEK

JUST E OF I-55, Will, IL

Built 1958 Load: 32.4 t ADT: 14,900

WEST RIVER RD

Good

Over: CREEK

2.6M S OF IL53, Will, IL

Built 2010 Load: 32.4 t ADT: 3,450

IL 171

Good

Over: MILNE CREEK

0.1 M N OF IL 7, Will, IL

Built 2012 Load: 32.4 t ADT: 14,600

I- 80

Good

Over: MARLEY CREEK

3.5 M E OF US-30, Will, IL

Built 1966 Load: 32.4 t ADT: 68,800

ROWELL ROAD

Good

Over: MANHATTAN CREEK

0.75 M SO MAN, Will, IL

Built 2007 Load: 32.4 t ADT: 50

88TH AVE (PEOTONE)

Good

Over: FORKED CREEK

0.5M S MANH-MONEE RD, Will, IL

Built 2011 Load: 32.4 t ADT: 425

TR-241 (Bruns Road

Good

Over: S Br Forked Creek

.50 M W CHW 19, Will, IL

Built 2006 Load: 32.4 t ADT: 375

CH 17 E Frontage R

Good

Over: N Branch Grant Creek

0.7 Mi N Blodgett Rd, Will, IL

Built 2016 Load: 32.4 t ADT: 12,300

135TH STREET

Good

Over: LONG RUN CREEK

NW of Ill. Rte. 171, Will, IL

Built 2014 Load: 32.4 t ADT: 5,500

OLD CHICAGO RD (CH

Good

Over: JORDAN CREEK

0.05M N.WILM-PEOTONE, Will, IL

Built 2014 Load: 32.4 t ADT: 750

CH 25

Good

Over: JORDAN CREEK

2.95M E IL ROUTE 53, Will, IL

Built 2012 Load: 32.4 t ADT: 6,250

Manhattan-Arsenal

Good

Over: Jackson Creek

Just E. of Il Rt. 53, Will, IL

Built 2013 Load: 32.4 t ADT: 3,750

EXCHANGE ST. (CH 4

Good

Over: DEER CREEK TRIBUTARY

BWTN IL 1 & IL 394, Will, IL

Built 2014 Load: 32.4 t ADT: 8,200

GOUGAR ROAD

Good

Over: FRACTION RUN CREEK

2 MI NORTH US 6, Will, IL

Built 1975 Load: 32.4 t ADT: 6,750

Showing 21,601-21,650 of 27,743 bridges

Related

All states → | National rankings → | Understanding conditions → | SD bridges explained →
Data sourced from the FHWA National Bridge Inventory (NBI), latest released cycle. See our methodology for details. Retrieved and formatted by PlainBridges Editorial.

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). A "structurally deficient" rating is a repair-priority signal, not a closure or unsafe-to-cross designation. Consult a qualified civil engineer before making decisions based on this data.

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.