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

FAI-70 WB

Unknown

Over: FAP-828

MONTROSE INT, Effingham, IL

Built 1960 ADT: 3,300

FAI-70/RMP-1285

Unknown

Over: FAI-57 SB

TRI-LEVEL SW EFFINGH, Effingham, IL

Built 1960 ADT: 19,900

FAI-70/RMP-1935

Unknown

Over: FAI-57 NB

TRI-LEVEL NE EFFINGH, Effingham, IL

Built 1960 ADT: 18,900

FAP-174 (ILL-32/33

Unknown

Over: FAI-70

ILL-32/33 INT, EFF, Effingham, IL

Built 1959 ADT: 39,200

IC RR

Unknown

Over: FAS 2701(ILL-37)

2.5 MI SW WATSON, Effingham, IL

Built 1928 ADT: 1,900

FAS 2701

Unknown

Over: FAI-57

WATSON INT, Effingham, IL

Built 1962 ADT: 19,900

FAS-2715 (CH-12)

Unknown

Over: FAI-57

WCL MASON, Effingham, IL

Built 1969 ADT: 18,500

FAS-1710(FUNKHSR R

Unknown

Over: FAI-70

7.7 MI E ALTAMNT INT, Effingham, IL

Built 1961 ADT: 23,700

TR-21

Unknown

Over: FAI-57

2 MI S SHELBY CO LN, Effingham, IL

Built 1963 ADT: 18,900

CH-11

Unknown

Over: FAI-70

5.0 MI E US-45 INT, Effingham, IL

Built 1960 ADT: 25,800

CH-13

Unknown

Over: FAI-70

6.5 MI E US-45 INT, Effingham, IL

Built 1960 ADT: 25,800

FAS 1724

Unknown

Over: FAI-57

4 MI S SW TRI-LEVEL, Effingham, IL

Built 1962 ADT: 19,900

TR-2

Unknown

Over: FAI-70

EFF-FAY CO LINE, Effingham, IL

Built 1962 ADT: 23,900

TR-14

Unknown

Over: FAI-70

1 MI W ALTAMONT INT, Effingham, IL

Built 1962 ADT: 23,900

TR-31

Unknown

Over: FAI-57

3 MI S SHELBY CO LN, Effingham, IL

Built 1963 ADT: 18,900

TR-40

Unknown

Over: FAI-70

1.6 MI E ALTAMNT INT, Effingham, IL

Built 1961 ADT: 23,700

TR-62

Unknown

Over: FAI-70

3.9 MI E ALTAMNT INT, Effingham, IL

Built 1961 ADT: 23,700

TR-78

Unknown

Over: FAI-70

5.5 MI E ALTAMNT INT, Effingham, IL

Built 1961 ADT: 23,700

TR-157

Unknown

Over: FAI-57

2 MI S SW TRI-LEVEL, Effingham, IL

Built 1962 ADT: 19,900

TR-215

Unknown

Over: FAI-57

5 MI S SW TRI-LEVEL, Effingham, IL

Built 1962 ADT: 19,900

TR-258

Unknown

Over: FAI-70

2.1 MI E US-45 INT, Effingham, IL

Built 1960 ADT: 25,800

TR-264

Unknown

Over: FAI-57

.6 MI S SHELBY CO LN, Effingham, IL

Built 1964 ADT: 18,900

TR-288

Unknown

Over: FAI-70

3.6 MI E US-45 INT, Effingham, IL

Built 1960 ADT: 25,800

FAI-57 NB

Unknown

Over: CH-27 & RR ABANDONED

1 MI N CLAY CO LINE, Effingham, IL

Built 1969 ADT: 175

FAI-57 SB

Unknown

Over: CH-27 & RR ABANDONED

1 MI N CLAY CO LN, Effingham, IL

Built 1969 ADT: 175

FAI-57 NB

Unknown

Over: FAS-2716

EDGEWOOD INT, Effingham, IL

Built 1969 ADT: 650

FAI-57 SB

Unknown

Over: FAS-2716

EDGEWOOD INT, Effingham, IL

Built 1969 ADT: 650

FAS-1710 (CH-24)

Unknown

Over: FAI-57

2.5 MI S WATSON INT, Effingham, IL

Built 1969 ADT: 18,500

CN RR

Unknown

Over: US-40 (FAYETTE AVE)

IN EFFINGHAM, Effingham, IL

Built 1981 ADT: 19,100

I70WB/I57SB

Unknown

Over: US 40 & CSXT RR

.6 MI S FAY AV INT, Effingham, IL

Built 2006 ADT: 4,550

I70EB/I57NB

Unknown

Over: US 40 & CSXT RR

.6 MI S FAY AV INT, Effingham, IL

Built 2006 ADT: 4,550

FAU 8368 4TH ST

Unknown

Over: FAI 70

.5 MI W US 45INT/EFF, Effingham, IL

Built 2007 ADT: 39,200

FAU 8385/FAP 95

Unknown

Over: FAI 57/70

FAYETTE AVE INT, EFF, Effingham, IL

Built 2011 ADT: 40,200

FAI57 SB / 70 WB

Unknown

Over: US 45 & CN RR

US 45 INTERCHANGE, Effingham, IL

Built 2015 ADT: 9,950

FAI 57 NB / 70 EB

Unknown

Over: US 45 & CN RR

US 45 INTERCHANGE, Effingham, IL

Built 2015 ADT: 9,950

ICG RR

Unknown

Over: TR-243

2 MI S WATSON, Effingham, IL

Built 1900 ADT: 75

FAP 328 (US-45)

Unknown

Over: CSXT RR

BANKER ST - EFFINGHM, Effingham, IL

Built 1996 ADT: 200

FAU 8361(RANEY ST)

Unknown

Over: FAU 8357,#6801,CSXT

EFFINGHAM, Effingham, IL

Built 2001 ADT: 3,950

PEDESTRIAN/BIKEWAY

Unknown

Over: FAP 95/FAYETTE AVE

BETWEEN MAPLE/BK ST, Effingham, IL

Built 1999 ADT: 19,100

PEDESTRIAN BRIDGE

Unknown

Over: FAI 70

KELLER DR INTERCH, Effingham, IL

Built 2006 ADT: 39,200

TREC BIKE/PED PATH

Unknown

Over: FAI 57/70

N FAYETTE AVE, Effingham, IL

Built 2014 ADT: 40,200

CONRAIL RR

Unknown

Over: SBI-128 (ILL-128)

.5 MI N US-40, Effingham, IL

Built 1936 ADT: 1,200

UNION PACIFIC RR

Unknown

Over: SBI-128 (ILL 128)

.5 MI N US-40, Effingham, IL

Built 1936 ADT: 1,200

C&EI RR

Unknown

Over: TR-30

.3 MI S ILL 33, Effingham, IL

Built 1976 ADT: 200

FAI-70 EB

Unknown

Over: ILL-185

1 MI W VANDALIA INT, Fayette, IL

Built 1965 ADT: 4,900

FAI-70 WB

Unknown

Over: ILL-185

1 MI W VANDALIA INT, Fayette, IL

Built 1965 ADT: 4,900

FAI-70 EB

Unknown

Over: FR-1187/CAMP CREEK

1.75 MI E VANDALI IN, Fayette, IL

Built 1948 ADT: 25

FAI-70 WB

Unknown

Over: FR-1187/CAMP CREEK

1.75 MI E VANDALI IN, Fayette, IL

Built 1964 ADT: 25

FAP-322 (US-51)

Unknown

Over: FAI-70

US-51 VANDALIA INT, Fayette, IL

Built 1964 ADT: 22,700

FA 752 (US-40)

Unknown

Over: FAI-70

BROWNSTOWN INT, Fayette, IL

Built 1962 ADT: 23,800

Showing 1,801-1,850 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.