Total Bridges
27,743
Public highway bridges in Illinois
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
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)
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
31
Nebraska
7.73% top marginal rate
17
Illinois
7.88% top marginal rate
25
Massachusetts
7.96% top marginal rate
29
Missouri
8.53% top marginal rate
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
PoorOver: DRAINAGE CANAL
2.2 MI E MEYER, Adams, IL
Built 1980 Load: 0.6 t ADT: 200
CH 15
PoorOver: 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 DeficientOver: WILSON CREEK
NE-35-T3NR2E, Fulton, IL
Built 1935 Load: 1.3 t ADT: 10
TR 10-B
Structurally DeficientOver: KING CREEK
W EDGE OF MINERAL, Bureau, IL
Built 1899 Load: 1.6 t ADT: 10
TR-6
Structurally DeficientOver: DRAINAGE DITCH
3.5 MI NE DIETERICH, Effingham, IL
Built 1909 Load: 1.6 t ADT: 25
TR208K(TWIN BRIDGE
Structurally DeficientOver: BIG CREEK
NE EDGE MT ZION, Macon, IL
Built 1967 Load: 1.9 t ADT: 375
All Bridges in Illinois
PC RR
UnknownOver: CERMAK (22ND ST)
0.3 M E I90&94 P5C, Cook, IL
Built 1900 ADT: 11,950
GM&O RR
UnknownOver: CERMAK (22ND ST)
0.32 M E I90&94 P5C, Cook, IL
Built 1900 ADT: 11,950
PC RR
UnknownOver: CERMAK (22ND ST)
0.33 M E I90&94 P5C, Cook, IL
Built 1900 ADT: 11,950
IC RR
UnknownOver: ILL 56(BUTTERFIELD)
JUST W I290 P20, Cook, IL
Built 1959 ADT: 13,800
IHB RR
UnknownOver: WASHINGTON BLVD
0.74 M EUS45 P20, Cook, IL
Built 1900 ADT: 8,750
ABAND N S RR(N)+CT
UnknownOver: US 41 (SKOKIE BLVD)
0.33 M N LINCOLN P13, Cook, IL
Built 1900 ADT: 17,100
ABAND N S RR(S)+CT
UnknownOver: US 41 (SKOKIE BLVD)
0.32 M N LINCOLN P13, Cook, IL
Built 1900 ADT: 17,100
C&NW RR (N)
UnknownOver: US 41 (SKOKIE BLVD)
0.18 M N LINCOLN P13, Cook, IL
Built 1934 ADT: 17,100
C&NW RR
UnknownOver: ILL 50 (CICERO AVE)
0.45 M N I90 P2C, Cook, IL
Built 1900 ADT: 17,300
C&NW RR
UnknownOver: EMERSON RD&RIDGE AVE
0.9 M W LAKE MCH P6, Cook, IL
Built 1954 ADT: 1,150
ABANDONED NS RR
UnknownOver: EMERSON RD
0.6 M W LAKE MCH P6, Cook, IL
Built 1900 ADT: 1,150
CENTRAL AVE
UnknownOver: I- 90 JFK & CTA
1.4 M NW IL 50, Cook, IL
Built 1952 ADT: 156,600
C&NW RR
UnknownOver: NCENTRAL AVE
0.01 M N I90 P2C, Cook, IL
Built 1900 ADT: 14,100
C&NW RR
UnknownOver: DIVERSEY AVE
0.1 M E I94 P2C, Cook, IL
Built 1900 ADT: 13,200
W.C.RR
UnknownOver: ILL 72 (HIGGINS RD)
0.17 M E US 45 P11, Cook, IL
Built 1934 ADT: 16,500
C&NW RR
UnknownOver: ADDISON AVE
0.23 M E ILL 50 P2C, Cook, IL
Built 1900 ADT: 14,300
SOO (AMTK) RR
UnknownOver: ADDISON AVE
0.41 M E ILL 50 P2C, Cook, IL
Built 1900 ADT: 14,300
ADDISON ST
UnknownOver: I- 90,94 JFK
3.8 M NW IL 64, Cook, IL
Built 1958 ADT: 205,000
C&NW RR
UnknownOver: ADDISON AVE
0.01 M W I94 P2C, Cook, IL
Built 1900 ADT: 17,400
C&NW RR
UnknownOver: ADDISON&LINCOLN AVES
0.01 M W LINCOLN P3C, Cook, IL
Built 1900 ADT: 15,200
IHB RR
UnknownOver: ST CHARLES RD
0.8 M E US 45 P20, Cook, IL
Built 1900 ADT: 10,400
WOLF RD
UnknownOver: PALATINE RD
2.2 M S IL 68, Cook, IL
Built 1963 ADT: 28,300
C&NW RR (ABANDONED
UnknownOver: WOLF RD
0.3 M N ILL 56 P20, Cook, IL
Built 1900 ADT: 10,100
CAZE RR (ABANDONED
UnknownOver: WOLF RD
0.29 M N ILL 56 P20, Cook, IL
Built 1900 ADT: 10,100
25TH AVE
UnknownOver: I-290 IKE - IL 110 CKC
3 M W IL 43, Cook, IL
Built 1951 ADT: 165,000
CC RR
UnknownOver: 25TH AVE
0.8 M S I290 P20, Cook, IL
Built 1900 ADT: 14,000
5TH AVE
UnknownOver: I-290 IKE - IL 110 CKC
1.7 M W IL 43, Cook, IL
Built 1951 ADT: 174,100
17TH AVE
UnknownOver: I-290 IKE - IL 110 CKC
2.5 M W IL 43, Cook, IL
Built 1951 ADT: 161,800
IL 171 (1ST AVE)
UnknownOver: I-290 IKE - IL 110 CKC
1.5 M W IL 43, Cook, IL
Built 1951 ADT: 164,000
BN RR
UnknownOver: FIRST AVE
0.7 M N US 34 P20, Cook, IL
Built 1936 ADT: 36,500
BOCT (WC) RR
UnknownOver: DES PLAINES AVE
0.1 M N I290 P20, Cook, IL
Built 1900 ADT: 16,900
CTA
UnknownOver: DES PLAINES AVE
0.05 M N I290 P20, Cook, IL
Built 1900 ADT: 16,900
DES PLAINES AVE
UnknownOver: I-290 IKE - IL 110 CKC
0.5 M W IL 43, Cook, IL
Built 1957 ADT: 163,500
CANFIELD AVE
UnknownOver: I- 90 JFK
0.8 M W ILL 43, Cook, IL
Built 1958 ADT: 181,100
NAGLE AVE
UnknownOver: I- 90 JFK & CTA
2.6 M W IL 50, Cook, IL
Built 1958 ADT: 161,500
C&NW RR
UnknownOver: RIDGELAND AVE
1 M N I290 P16, Cook, IL
Built 1900 ADT: 15,200
RIDGELAND AVE
UnknownOver: I-290 & IL 110/CTA/RR
2 M W IL 50, Cook, IL
Built 1957 ADT: 172,400
CC RR
UnknownOver: RIDGELAND AVE
0.4 M N US 34 P16, Cook, IL
Built 1900 ADT: 10,000
TOUHY AVE
UnknownOver: I- 94 EDENS
1.5 M N US 14, Cook, IL
Built 1950 ADT: 129,700
GTW RR
UnknownOver: MARQUETTE RD
1.5 M W ILL 50 P6C, Cook, IL
Built 1900 ADT: 13,800
RIDGELAND AVE
UnknownOver: I- 80
1.7 M W I-57, Cook, IL
Built 1964 ADT: 90,800
NILES CENTER RD
UnknownOver: I- 94 EDENS
2.2 M N US 14, Cook, IL
Built 1950 ADT: 130,700
C&NW RR
UnknownOver: CENTRAL AVE
1.5 M S ILL 64 P4C, Cook, IL
Built 1900 ADT: 13,600
CENTRAL AVE & RAMP
UnknownOver: I- 55 STEVENSON
1.1 M SW IL 50, Cook, IL
Built 1964 ADT: 124,000
GROSS POINT RD
UnknownOver: I- 94 EDENS
1.7 M S OF DEMPSTER, Cook, IL
Built 1954 ADT: 130,700
CTA
UnknownOver: LINCOLN AV
LAWRNCE&WESTERN P3C, Cook, IL
Built 1900 ADT: 8,050
C&NW RR
UnknownOver: PULASKI RD
0.05 M S I94 P2C, Cook, IL
Built 1900 ADT: 16,900
SOO (AMTK) RR
UnknownOver: BELDON AVE
E OF CICERO P2C, Cook, IL
Built 1900 ADT: 18,800
SOO RR
UnknownOver: PULASKI RD
0.2 M N ILL 64 P2C, Cook, IL
Built 1900 ADT: 16,200
C&NW RR (1 OF 5)
UnknownOver: PULASKI RD
1.5 M S ILL 64 P4C, Cook, IL
Built 1900 ADT: 18,300
Showing 601-650 of 27,743 bridges
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.
| Publisher | Kiznis Studio |
| Sources | FHWA National Bridge Inventory, public U.S. government datasets |